Christmas & New Year Break: Our shop is closed 25 December – 7 January. You can still place orders online, and they’ll be processed when we return on 8 January.
Christmas & New Year Break: Our shop is closed 25 December – 7 January. You can still place orders online, and they’ll be processed when we return on 8 January.
📢 Update: You can now contact us by landline 02 6685 6722 or Shop Mobile 0490 078 621 — available for both calls and texts.
There are very few objects in the designed world that survive a thousand years of continuous use without fundamental modification. The tatami mat is one of them.
First appearing in Japanese aristocratic residences during the Nara period (710–794 AD), tatami mats have been the defining floor covering of Japanese domestic architecture for over a millennium. They have shaped the proportions of Japanese rooms — traditional room sizes are still measured in tatami units — influenced the posture, movement, and etiquette of an entire culture, and provided the sleeping surface for generations of Japanese people who have slept more deeply, more restoratively, and with fewer musculoskeletal complaints than populations sleeping on sprung mattresses have managed in a fraction of that time.
The tatami mat has survived not through inertia or cultural conservatism alone, but because it genuinely works. Its combination of natural materials, functional versatility, sensory richness, and health-supporting properties has proven resilient against centuries of alternative sleeping technologies — from the Western spring mattress to the memory foam revolution — because it offers something that manufactured alternatives have not yet managed to replicate: a sleeping and living surface that is simultaneously firm and yielding, breathable and insulating, antimicrobial and fragrant, culturally resonant and practically effective.
In Australia, awareness of tatami mats has grown steadily alongside broader interest in Japanese aesthetics, minimalist living, and natural sleep solutions. Zentai Living has been Australia’s most knowledgeable tatami mat supplier for over three decades — importing, advising on, and supplying tatami mats to customers across the country who are discovering for the first time what Japan has known for a thousand years.
This guide covers everything you need to know to make an informed tatami mat purchase in the Australian context — what tatami mats are made from, how they are constructed, the different types available, how to size them for Australian bedrooms, how to use them effectively, and how to care for them so they last.
A traditional tatami mat is a composite structure made from three distinct components, each with a specific function and each made from natural materials refined over centuries of use.
The core (doko): The structural foundation of a traditional tatami mat is a thick compressed core made from rice straw — specifically from the dried stalks of the rice plant harvested after the grain has been removed. The rice straw is layered, compressed, and stitched into a dense, firm block approximately 5–6 centimetres thick. This straw core provides the tatami’s characteristic combination of firmness and resilience — it supports the body’s weight without excessive sinkage, while the natural springiness of compressed straw creates a subtle yielding quality that pure hard floor surfaces lack.
The rice straw core is also a significant contributor to tatami’s functional properties. Straw is a naturally porous material that absorbs moisture from the surrounding air when humidity is high and releases it when humidity falls — a passive humidity regulation mechanism that has been shown to moderate indoor humidity levels in tatami-floored rooms. This moisture regulation reduces the conditions that favour dust mite colonisation and mould growth, contributing to the healthy air quality traditionally associated with tatami rooms.
The surface (omote): The sleeping and walking surface of a traditional tatami mat is woven from dried rush grass — specifically Juncus effusus, known in Japanese as igusa. The igusa plant is cultivated in dedicated paddies in specific regions of Japan — particularly Kumamoto and Okayama prefectures — where the soil and water quality produce rush grass of superior quality, characterised by a deep green colour, fine texture, and high content of the aromatic compounds responsible for tatami’s distinctive fragrance.
The dried igusa is woven in a specific double-weave pattern — a technique refined over centuries that creates a surface of exceptional durability, uniformity, and texture. The weave density is one of the primary quality indicators in tatami mat assessment — higher weave density (more igusa strands per unit area) produces a surface that is denser, more durable, and more finely textured.
The igusa surface contributes several important functional properties. It is naturally antimicrobial — igusa contains compounds including phytoncides that inhibit the growth of bacteria and mould. It releases a calming, subtly grassy fragrance that comes from the chlorophyll and aromatic compounds in the rush grass — a fragrance that is one of the most immediately recognisable sensory signatures of the traditional Japanese home. And it has a pleasant tactile quality — slightly cool and smooth under bare feet, with a gentle texture that is neither slippery nor rough.
The border (heri): The edges of a traditional tatami mat are finished with a woven fabric border — historically made from brocade silk in elaborate patterns, more commonly today from cotton or synthetic fabric in a range of colours and designs. The border serves both structural and aesthetic functions — protecting the edges of the rush grass weave from fraying and damage, and providing a design element that can be coordinated with the room’s interior.
Border selection was historically governed by strict rules of social hierarchy in Japan — certain patterns and colours were reserved for aristocratic or temple use — though these conventions have largely given way to personal preference in contemporary application. Border colour and pattern are among the most visible customisation choices in tatami selection, and the range of available options has expanded significantly to meet contemporary design preferences.
While the traditional rice straw core remains the benchmark for quality and functional performance, contemporary tatami mats increasingly use alternative core materials — most commonly high-density polyurethane foam, sometimes in combination with wood-based board products. These alternative cores are used primarily for cost and practicality reasons:
Dimensional stability: Foam cores are more dimensionally stable than rice straw, making them less susceptible to swelling and warping with humidity changes — a consideration in climates more extreme than Japan’s temperate zones.
Weight: Foam core tatami mats are significantly lighter than traditional straw core mats of equivalent size, making them easier to handle, move, and store.
Cost: Foam cores are considerably less expensive to produce than densely compressed rice straw cores, reducing the price of the finished mat.
Availability: High-quality Kumamoto-prefecture rice straw is in genuinely limited supply, and demand for traditional tatami mats has grown internationally while Japanese domestic tatami use has declined — creating supply pressure on traditional core materials.
The trade-off is functional. Rice straw cores have superior humidity regulation properties, a more authentic tactile quality underfoot and during sleep, and are entirely natural and biodegradable. Foam cores provide a consistent, lightweight, stable base but lack the moisture regulation and natural material credentials of rice straw. For customers prioritising authenticity and natural materials — particularly those using tatami mats as a sleeping surface — rice straw cores are the preferred option. For decorative or light-use applications, or where weight and dimensional stability are primary concerns, foam core mats are a practical alternative.
Zentai Living stocks both rice straw core and foam core options and will advise on the most appropriate choice for your specific application.
Understanding the cultural context of tatami is not merely academic — it illuminates the design logic behind the mat’s construction, explains why it has proven so durable as a functional object, and provides a framework for using tatami thoughtfully in an Australian home.
The earliest tatami mats — thin, portable woven rush grass mats used as individual sitting and sleeping surfaces — appear in historical records from the Nara and Heian periods (8th–12th centuries AD). At this early stage, tatami were luxury items — owned by aristocrats and senior Buddhist clergy, used as individual sleeping mats that were rolled up and stored during the day, or as ceremonial seating surfaces for important persons in court settings. The ordinary population slept on bare wooden floors or simple straw mats of much cruder construction.
During the Muromachi period (14th–16th centuries), tatami transitioned from individual luxury items to architectural elements — mats that covered entire floor surfaces of rooms in the residences of the samurai class and wealthy merchants. This shift transformed tatami from a personal possession into a defining architectural feature, and established the room-size conventions — measured in tatami units — that persist in Japanese architecture to the present day.
By the Edo period (17th–19th centuries), tatami flooring had become sufficiently widespread that a distinct craft tradition — tatami making — was well-established in Japanese cities and towns, with specialist craftspeople producing mats to precise specifications for diverse social contexts. The conventions of tatami laying — specific patterns for arranging mats within rooms, specific patterns reserved for auspicious occasions or mourning, the etiquette of walking on tatami — developed into a detailed social language that reflected the mat’s centrality to Japanese domestic life.
The traditional Japanese room (washitsu) is designed around the tatami mat in a way that has no direct equivalent in Western architectural tradition. The tatami is not simply a floor covering applied within an independently conceived room — the room’s dimensions, proportions, and design are determined by the tatami mat’s dimensions. A standard room is described as a “six-mat room” or an “eight-mat room,” with the layout of the mats determining the room’s precise measurements.
This integration of floor covering and architectural proportion produces rooms of inherent harmony — spaces where every element is proportionally related through the tatami module, where the scale of sliding doors, the height of built-in storage alcoves, and the dimensions of the room itself are unified by the same foundational measurement.
The washitsu is a multi-functional space. During the day, with bedding stored in built-in closets, it is a living and reception room — a space for sitting, eating, conversation, and work. During the evening, futons are retrieved from storage and laid directly on the tatami, transforming the same space into a sleeping room. This functional flexibility — the collapse of the Western division between living room and bedroom — reflects both the spatial constraints of Japanese urban housing and a different cultural relationship to domestic space and its purposes.
The Japanese practice of sleeping on a futon laid on tatami is not simply a cultural habit — it reflects a coherent philosophy of rest and its relationship to the body, the floor, and the domestic environment. Sleeping close to the floor is, in Japanese tradition, associated with groundedness, simplicity, and a form of physical awareness — a connection to the solidity of the earth beneath the building — that elevated sleeping platforms interrupt.
From a physiological perspective, floor-level sleeping on a firm tatami surface encourages a particular type of physical awareness during sleep — the body cannot sink deeply into the surface and must instead find rest in alignment with a supportive, unyielding foundation. Many practitioners of floor sleeping report improvements in spinal comfort over time as the body adapts to the firmness of the tatami surface and the postural awareness it encourages.
The combination of tatami and futon has also been associated with better temperature regulation during sleep — the tatami surface’s natural humidity regulation prevents the accumulation of moisture beneath the sleeper, while the futon’s cotton fill provides insulation without the heat retention of memory foam or the excessive warmth of thick spring mattresses.
The health benefits attributed to tatami are not merely traditional lore — several of the functional properties of the rush grass surface and rice straw core have been investigated scientifically with results that support traditional claims.
Igusa rush grass contains a range of bioactive compounds including phytoncides — volatile organic compounds produced naturally by plants as a defence mechanism against pathogens and pests. Phytoncides released by igusa include compounds that have demonstrated antimicrobial properties in laboratory studies, inhibiting the growth of common bacteria and mould species.
The phytoncide release from fresh tatami mats is most intense immediately after manufacture and in the first weeks of use — coinciding with the period of most intense fragrance. As the mat ages and the igusa dries further, phytoncide release diminishes. Tatami rooms are traditionally aired regularly — windows opened to allow fresh air circulation — which refreshes the surface and maintains the mat’s air quality contribution.
Research conducted by Japanese academic institutions has found that tatami-floored rooms maintain lower airborne bacterial and mould counts than equivalent rooms with synthetic flooring under the same conditions of occupancy and ventilation — a finding consistent with the antimicrobial properties of igusa compounds. While this research is conducted in Japanese conditions rather than Australian ones, the underlying chemistry of igusa phytoncides is not climate-specific.
As discussed in the material section, both the igusa surface and the rice straw core contribute to passive humidity regulation in tatami environments. The porous structure of both materials absorbs atmospheric moisture when ambient humidity is high — dampening humidity spikes from cooking, bathing, breathing, and perspiration — and releases stored moisture when ambient humidity falls, moderating low-humidity conditions.
This passive humidification and dehumidification operates without energy consumption or mechanical intervention. In a tatami-floored room with appropriate ventilation, humidity fluctuations are moderated compared to rooms with non-hygroscopic synthetic flooring. The practical health implications include reduced dust mite habitat viability — dust mites cannot complete their lifecycle when humidity is consistently maintained below approximately 50% — and more stable respiratory comfort for occupants with humidity-sensitive respiratory conditions.
The ergonomic case for floor-level living — sitting, sleeping, and moving at floor level rather than on elevated furniture — is the subject of ongoing research and significant traditional wisdom across multiple Asian cultures. The regular practice of sitting cross-legged, kneeling, and transitioning between floor-level positions maintains hip mobility, ankle flexibility, and core engagement in ways that chair-based living does not. Many physiotherapists and movement practitioners note that populations with traditions of floor-level living maintain greater lower body mobility into old age than populations with exclusively chair-based domestic life.
For sleeping specifically, a firm tatami surface encourages the postural awareness described above — the body cannot passively collapse into the surface but must maintain alignment. This active postural engagement during sleep may contribute to the spinal health advantages traditionally associated with floor sleeping, though individual variation is significant and the transition from elevated mattress to floor-level tatami requires gradual adaptation for most Western sleepers.
The fragrance of fresh tatami is one of its most immediately distinctive properties — a subtle, green, slightly sweet scent derived from the chlorophyll and aromatic compounds in the igusa rush grass. This fragrance has been the subject of research in the context of environmental psychology and sleep quality, with studies finding that exposure to natural plant fragrances including those characteristic of igusa is associated with reduced stress hormone levels, lowered heart rate, and improved subjective sleep quality scores.
The connection between natural fragrance and psychological calm is consistent with broader research into the restorative effects of natural environments — the phenomenon known as biophilia, or the human tendency to respond positively to natural sensory stimuli. Tatami fragrance represents a form of biophilic design embedded in the sleep environment — a sensory reminder of the natural world that may contribute to the ease of sleep onset and the quality of rest experienced in tatami rooms.
One of the practical challenges for Australian buyers is the mismatch between traditional Japanese tatami mat dimensions and standard Australian room and mattress sizes. Understanding this mismatch — and the solutions available — is essential for successful tatami integration into an Australian home.
Traditional Japanese tatami mats are made to one of several regional size standards — reflecting the historical variation in room proportions across different regions of Japan. The most common sizes are:
Kyoto (Kyoma) size: 191cm × 95.5cm — the largest of the traditional sizes, used predominantly in the Kyoto and Kansai region. This size reflects the traditional Kansai approach to room planning, in which the room dimensions are set first and the tatami mats are made to fill the room.
Tokyo (Edoma/Kanto) size: 176cm × 88cm — the standard size in the Tokyo and Kanto region. Slightly smaller than Kyoto size, reflecting the historically denser urban environment of Edo-period Tokyo.
Nagoya (Aichi) size: 182cm × 91cm — an intermediate size used in the Nagoya and Chubu region, sometimes called “middle size.”
Danchima size: 170cm × 85cm — a smaller size developed for use in standardised post-war apartment buildings in Japan.
None of these standard sizes corresponds precisely to Australian mattress dimensions or typical Australian bedroom proportions, which creates the sizing challenge that every Australian tatami buyer must navigate.
Standard Australian mattress sizes are:
The length dimension of most Australian mattress sizes (188–203cm) is broadly compatible with the Kyoto tatami length of 191cm, though not precisely. The width dimension creates more significant discrepancies — a standard Queen mattress at 153cm is wider than a single Kyoto-size tatami at 95.5cm, meaning that a Queen sleeping arrangement requires two tatami mats placed side by side (total width approximately 191cm — wider than the mattress) or a custom-sized tatami.
Two-mat sleeping arrangements: For single or King Single sleeping arrangements, a single Kyoto-size tatami mat at 191cm × 95.5cm provides a close match to the Australian Single mattress (92cm × 188cm) or an approximate match to the King Single (107cm × 203cm). For double, Queen, or King sleeping arrangements, two tatami mats placed side by side provide sufficient width, with a standard Japanese mat layout pattern used to manage the central seam.
Custom-sized tatami mats: For Australian buyers who want a precise dimensional match to their room or mattress, custom-sized tatami mats can be ordered to specific dimensions. Custom sizing is standard practice in the Japanese tatami industry — mats are traditionally made to fit specific rooms — and Zentai Living can facilitate custom orders for customers with non-standard requirements. Lead times for custom orders are longer than for standard sizes, and pricing reflects the bespoke production involved.
Room-as-tatami-room: For buyers undertaking a more complete tatami installation — covering a bedroom or dedicated room with tatami rather than simply placing individual mats — custom sizing to the room’s dimensions is the appropriate approach. This creates a coherent floor surface without gaps or mismatches, replicating the traditional Japanese tatami room experience most faithfully.
Tatami as sleeping surface only: Many Australian buyers use tatami mats purely as a sleeping surface — placing one or two mats in the area of the bedroom where the futon or SleepMat will be laid, without covering the full floor. This partial installation approach is the most common and practical for Australian bedrooms, requiring fewer mats and no room modification, while still providing the tatami sleeping surface experience.
Standard traditional tatami mats are approximately 55–60mm (5.5–6cm) thick — a depth that provides meaningful structural contribution to the sleeping system. Thinner “utility” tatami mats at 25–30mm are available for applications where a lower profile is preferred or where stacking height is a practical consideration.
For sleeping applications — where the tatami is serving as the primary foundation layer beneath a futon or SleepMat — the full 55–60mm traditional thickness is recommended. The depth of the straw core contributes meaningfully to the mat’s firmness, humidity regulation, and thermal insulation properties. Thinner mats are better suited to decorative or light sitting applications.
The range of applications for tatami mats in the Australian home extends well beyond the traditional Japanese sleeping arrangement. Understanding the full scope of appropriate uses helps buyers identify the configuration that best serves their specific needs and living context.
The most traditional use of tatami in the residential context is as the foundation layer of a floor sleeping system — one or two tatami mats laid in the sleeping area of the bedroom, with a futon or organic latex SleepMat placed directly on the tatami surface.
This arrangement creates a sleeping height of approximately 60–80mm above the floor — the combined thickness of the tatami core and the futon or SleepMat — which is low by Western standards but provides meaningful elevation from the bare floor, improving airflow beneath the sleeping surface and reducing drafts.
The key practical requirement for this arrangement is that the tatami mat is placed on a flat, clean, ventilated floor surface. Tatami should not be placed directly on carpet — the carpet prevents airflow beneath the mat and creates a damp microenvironment that promotes mould growth in the rice straw core. Tatami performs best on hardwood timber floors, polished concrete, or tile — surfaces that allow air circulation beneath the mat and are easy to keep clean.
For buyers with carpeted bedrooms who wish to use tatami, a thin rigid board placed beneath the tatami mat — creating a separation layer between the mat and the carpet — is a practical solution. Alternatively, removing carpet from the sleeping area and installing hardwood or polished concrete beneath the tatami zone addresses the issue more fundamentally.
An increasingly popular arrangement in Australian homes is the combination of tatami mats with a low-profile bed frame — placing tatami mats on the slatted base of a bed frame rather than on the floor. This arrangement provides the tatami sleeping surface experience with the convenience of an elevated sleeping position, and eliminates the floor contact concern for carpeted rooms.
The Zentai Living Zen bed frame is specifically designed with this combination in mind — its ultra-low profile and slatted base create an ideal platform for tatami mat placement, producing a sleeping system that combines the aesthetic and functional qualities of traditional Japanese floor sleeping with the structural framework of a solid timber bed frame.
For this application, the tatami mat dimensions must be matched to the bed frame’s interior dimensions. Custom sizing is often appropriate for precise fit. Tatami thickness in this application can be reduced — 25–30mm utility mats are often appropriate, as the bed frame’s slatted base provides the structural support that the full-depth straw core provides in a floor installation.
Beyond sleeping applications, tatami mats are used effectively as feature flooring elements in living spaces, meditation rooms, reading alcoves, and children’s play areas. A section of tatami flooring in an otherwise timber or tile room creates a defined zone within the larger space — a textural contrast that marks the tatami area as a space of particular quality and intention.
The Japanese concept of the tokonoma — an alcove within the tatami room designated for a single piece of art, a flower arrangement, or a calligraphic scroll — translates well to Australian domestic design as a principle of intentional feature display within a tatami zone. A reading corner, a meditation space, or a children’s storytelling area defined by tatami mats and furnished simply creates a domestic environment of distinctive sensory quality.
For feature flooring applications, the standard-size mats in a layout that covers the intended floor area is the typical approach. Border colour selection becomes more design-significant in visible flooring applications — the border pattern and colour should be coordinated with the broader interior design rather than left as an afterthought.
Tatami mats are a natural choice for meditation and yoga practice spaces — their firm, slightly yielding surface provides better joint support than bare floor, better stability than soft yoga mats, and a sensory quality that soft synthetic surfaces cannot replicate. The fragrance of fresh tatami enhances the meditative environment in a way that is consistent with traditional Japanese tea ceremony rooms and Zen meditation spaces, where tatami flooring is standard.
For dedicated practice spaces — a converted spare room, a section of a living area, or a garage or studio — a full tatami floor installation provides the most complete practice environment. For individual practice without a dedicated space, individual mats that can be laid and stored as needed are more practical.
The combination of tatami’s natural antimicrobial properties, its firmness and safety as a play surface, and its natural material credentials makes it an excellent choice for children’s rooms and play spaces. The firm, flat surface is safe and appropriate for rolling, crawling, and early walking — it does not present the tripping risk of thick pile carpet, the hardness risk of bare timber, or the synthetic material concerns of foam play mats.
Children who sleep on tatami with a futon experience the full health benefits of the system — natural materials, good humidity regulation, antimicrobial surface — while developing the postural awareness and floor-level comfort that many practitioners argue supports better long-term physical development than elevated sleeping positions.
Tatami mats are durable objects when properly cared for — well-maintained traditional tatami can last 20–30 years with appropriate care, though the igusa surface typically requires replacement (a process called omote-gae) every 5–10 years depending on use. Understanding the specific care requirements of tatami in the Australian climate is essential for achieving this longevity.
The most important care practice for tatami mats is regular airing — lifting the mats and standing them upright in a well-ventilated space or outdoors in indirect sunlight, for several hours every few months. Airing allows accumulated moisture from below the mat to evaporate, preventing the development of mould in the rice straw core.
The frequency of airing required depends on the humidity of your environment. In tropical or subtropical climates — Queensland, Darwin, coastal New South Wales — more frequent airing is necessary, potentially monthly during the wet season. In temperate climates — Victoria, Tasmania, elevated regions — quarterly airing is typically sufficient. In arid climates — inland South Australia, Western Australia — airing is less critical for moisture management but still beneficial for freshening the igusa surface.
Direct sunlight should be avoided during airing — ultraviolet exposure bleaches and weakens the igusa fibres. Airing in a shaded, well-ventilated outdoor area, or indoors near open windows, is preferable to direct sun exposure.
The igusa surface of a tatami mat should be cleaned regularly — weekly sweeping with a soft brush or vacuum with a soft brush attachment removes dust and debris without damaging the weave. Brushing or vacuuming should always be done along the direction of the weave — working across the grain can pull igusa fibres loose and accelerate surface wear.
Liquid spills should be addressed immediately — blot (never rub) with an absorbent cloth to remove as much liquid as possible, then allow the area to dry thoroughly. Rubbing spreads the liquid and drives it deeper into the weave. For more substantial spills, a small amount of water applied with a wrung-out cloth can be used to dilute and blot the affected area, followed by thorough drying. Harsh cleaning products, detergents, and bleach should not be used on tatami — they damage the igusa fibres and alter the surface characteristics.
For persistent stains, a small amount of diluted white vinegar applied to the affected area and immediately blotted is a traditional cleaning approach that is gentle on the igusa surface while providing mild antimicrobial action.
Australian climate conditions — particularly the high humidity of tropical and subtropical regions, and the extreme humidity fluctuations of temperate coastal areas — present more challenging conditions for tatami than the relatively stable temperate climate of most of Japan. In high-humidity environments, tatami mats face a greater risk of mould development in the rice straw core, and more aggressive airing regimes are required.
For buyers in high-humidity regions, several additional strategies help manage the humidity challenge:
Elevated placement: Using a slatted timber platform or the slatted base of a bed frame beneath the tatami mat allows airflow beneath the mat, reducing moisture accumulation and dramatically improving long-term condition.
Dehumidification: A bedroom dehumidifier maintaining ambient humidity below 60% significantly reduces the moisture load on tatami mats and extends their lifespan in humid climates. Zentai Living’s dehumidifier range includes models specifically suited to bedroom use.
Foam core mats in high-humidity regions: For buyers in tropical or subtropical Queensland, Darwin, or humid coastal areas, foam core tatami mats may be more practically appropriate than rice straw core mats. The foam core does not absorb moisture in the way rice straw does, making it more resistant to mould in persistently humid conditions. The trade-off in humidity regulation and natural material authenticity is real — but for climates where rice straw core maintenance is impractical, foam core mats provide the igusa surface experience with better moisture resistance.
Over time — typically 5–10 years of regular use — the igusa surface of a tatami mat fades in colour (from green to golden), wears in high-traffic areas, and loses its fragrance as the aromatic compounds in the rush grass dissipate. At this point, the surface can be renewed through a process called omote-gae — replacing the igusa weave surface while retaining the existing straw core.
Omote-gae is standard practice in Japan and is performed by professional tatami craftspeople who remove the old igusa surface, inspect and if necessary repair the straw core, and attach a new igusa surface to the existing core. This process extends the functional life of the mat by another 5–10 years at a fraction of the cost of full replacement.
In Australia, omote-gae services are less widely available than in Japan, though specialist tatami craftspeople do operate in major Australian cities. Zentai Living can advise on available renewal services for our mats. Buyers who are particularly attached to their tatami and wish to maintain them long-term should factor omote-gae into their care planning from the beginning.
With an understanding of tatami construction, sizing, and use, the following guidance helps narrow the selection to the mat most appropriate for your specific situation.
Choose rice straw core if:
Choose foam core if:
Border selection is partly aesthetic and partly practical. In a bedroom sleeping application where the mat is largely covered by futon or bedding, border selection is relatively low-stakes — choose a colour that coordinates with your floor and room palette without excessive deliberation.
In visible flooring or feature applications — where the tatami border forms part of the room’s visual composition — border selection is a meaningful design decision. Traditional Japanese borders tend toward subtle patterns in indigo, green, or neutral tones that complement rather than compete with the igusa surface. Contemporary borders in bold colours or geometric patterns are available for buyers who want a more design-forward result. The key principle is that the border should frame and support the igusa surface — which is the mat’s most distinctive visual element — rather than dominate it.
For a single floor sleeping arrangement: one standard Kyoto-size mat (191cm × 95.5cm) is typically sufficient for a Single or King Single futon arrangement.
For a couple sleeping on the floor: two mats side by side provide approximately 191cm × 191cm — sufficient for a Queen sleeping arrangement with some margin.
For a room-scale installation: calculate the room’s floor area and divide by the mat area to estimate the number required, accounting for the need to trim edge mats to fit room dimensions or to use custom-sized mats for a precise fit.
For a bed frame installation: measure the interior slatted base dimensions of your frame and select mats sized to fit — this typically requires custom sizing for a precise result.
Do tatami mats smell? New tatami mats have a distinctive, fresh, green fragrance from the igusa rush grass that most people find pleasant and calming. The fragrance is strongest in the first weeks after manufacture and fades gradually over months of use. It does not persist indefinitely — aged tatami has little fragrance. For buyers who particularly value the fragrance, purchasing fresher mats (closer to their manufacture date) produces the most intense aromatic experience.
Can tatami get mouldy in Australia? In high-humidity Australian climates, tatami mats can develop mould in the rice straw core if not adequately aired and ventilated. This risk is manageable with appropriate care — regular airing, elevated placement to allow underside airflow, and dehumidification in particularly humid environments. In tropical regions, foam core mats are a more practical option for buyers who cannot commit to the care regime required for rice straw mats.
Is tatami suitable for people with grass allergies? Igusa rush grass (Juncus effusus) is a different species from the lawn grasses most commonly associated with hay fever and grass allergies. Most people with grass pollen allergies do not react to igusa. However, if you have a diagnosed grass allergy and are uncertain, it is worth consulting your allergist before purchasing. New tatami mats — with a higher active phytoncide release — may be more likely to produce a response in sensitive individuals than aged mats.
How do I stop tatami mats from sliding on a timber floor? Non-slip mat grips — the same type used beneath area rugs — are effective for stabilising tatami mats on polished timber or tile floors. Alternatively, tatami mats placed within a border frame or against room walls are stabilised by their surroundings. Purpose-made tatami non-slip underlays are also available.
Can I use a regular mattress on tatami? Technically yes, but it is not recommended. Standard spring or foam mattresses are much heavier than futons and SleepMats, place greater concentrated load on the tatami surface, and trap moisture between the mattress base and the tatami more effectively — increasing mould risk. Tatami is designed to be used with the lightweight, breathable sleeping surfaces of the traditional system — futons, cotton SleepMats, or Zentai Living’s organic latex SleepMat range.
How long will a tatami mat last? A well-maintained rice straw core tatami mat can last 20–30 years with surface renewal (omote-gae) every 5–10 years. Without surface renewal, the igusa surface will wear and fade over approximately 10 years of regular use while the straw core remains functional. Foam core mats have a similar or slightly shorter lifespan depending on use intensity.
Where are your tatami mats made? Zentai Living imports tatami mats from Japan, where tatami making remains a living craft tradition. We source mats from established Japanese manufacturers using igusa grown in the traditional producing regions of Kumamoto and Okayama prefectures.
The experience of sleeping on tatami — the firmness, the fragrance, the quality of rest — is one of those things that is genuinely difficult to communicate through words. We encourage anyone who is curious to visit our Byron Bay showroom, where we have tatami mat displays and can walk you through the full range of options, sizing considerations, and care requirements in person.
For those outside the Byron Bay region, our team is available by phone, text, and email to discuss your specific requirements, room dimensions, and the most appropriate mat configuration for your situation.
Visit our showroom: 1/8 Banksia Drive, Byron Bay NSW 2481 Call or text: +61 2 6685 6722 | 0490 078 621 Email: [email protected] Shop online: zentai.com.au/product-category/tatami-mats
