The short answer
Measure the room or terrace and plan the seating layout before choosing a size. Prefer a frame of solid teak with real joinery and a seat height around 40–43 cm, specify cushions by foam density rather than by looks, and treat indoor, covered and fully outdoor sofas as three different pieces of engineering. For made-to-order or export work, confirm dimensions, frame timber, cushion specification, finish and delivery in writing before production.
1. Measure the space and plan the seating first
The sofa size follows the room, not the other way round. Measure the wall it will sit against, then mark doors, windows, walkways and the coffee table position on a simple floor plan. A three-seat sofa can fit a wall and still overcrowd a room once side tables, lamps and walking space are added to the plan.
Plan the conversation distance as well: a coffee table usually sits about 40 to 45 centimetres from the sofa edge, close enough to reach and far enough to stand up from comfortably. Leave at least 70 centimetres of floor between the sofa and any facing seating so people can pass with a tray. In a narrow room a two-seat sofa plus one armchair almost always lives better than a forced three-seater; our teak coffee table and side table guides cover the pieces that sit alongside it.
- Wall length, doors and walkways measured
- Coffee table distance planned at about 40–45 cm
- Passage space of at least 70 cm around the seating
- Seating numbers matched to the room, not to a wish list
2. Solid teak frames versus veneer and mixed construction
A sofa carries more repeated load than any other piece of living room furniture, so the frame matters more than the fabric. Solid teak construction means the rails, arms, back and legs are real teak throughout. Veneered or mixed frames use a thin teak layer over a cheaper core, or an imported hardwood frame dressed with teak panels, and they cannot be sanded and refinished in the same way later.
Look at how the frame is joined: mortise-and-tenon or dowelled joints reinforced with corner blocks are what stop a wooden sofa from working loose. Ask whether the timber was kiln-dried and what moisture content was targeted, because teak that was not properly dried will move once it settles into an air-conditioned room or a humid terrace. Teak's natural oils and stability are why it holds up in the tropics, but only when the drying and joinery were done properly.
- Solid teak confirmed in writing, not from a photograph
- Mortise-and-tenon or dowelled joints with corner blocks
- Kiln-dried timber and target moisture content stated
- Underside and inner rails checked for veneer or mixed species
3. Seat height, depth and comfort that lasts
Sofa comfort comes from proportions, not from softness. Seat height is usually between 40 and 43 centimetres on a living room sofa, which lets most adults stand up without pushing off the arms. A seat depth of 55 to 60 centimetres suits upright sitting and conversation, while deeper seats beyond 65 centimetres suit lounging and need more back support to stay comfortable.
Inside the seat, ask for foam density rather than adjectives. A high-resilience foam core of roughly 30 to 35 kilograms per cubic metre holds its shape, and a wrapped or layered cushion keeps the front edge tidier than a single soft block. Back cushions may be softer; seat cushions should not be. If the seat is supported by webbing, slats or springs, confirm which, because that is what prevents cushions from sagging years before the covers wear out.
- Seat height around 40–43 cm
- Seat depth matched to lounging or upright use
- Foam density stated in kilograms per cubic metre
- Seat support system: webbing, slats or springs confirmed
4. Indoor living room, covered terrace or fully outdoors
The same silhouette behaves differently in three environments, and the differences sit in construction, hardware and finish. An indoor sofa needs a comfortable, well-supported seat and a finish that suits the room. A covered terrace sofa needs protection from humidity and blown rain: a harder-wearing finish, stainless steel or solid brass fixings instead of plated screws, and cushions that can be brought inside.
A fully outdoor sofa is engineered for weather. That normally means an unfinished or oiled surface that can be renewed, joints that drain rather than trap water, quick-dry foam and fabric that resists mould, and a frame that does not mind being wet. If the piece will sit in sun and rain, plan on a patina that silvers over time rather than trying to hold a showroom shine — our teak outdoor furniture guide explains how that weathering works.
- Environment defined: indoors, covered terrace or open air
- Stainless steel or brass fixings for outdoor pieces
- Cushions movable or quick-dry in exposed positions
- Finish chosen for renewal, not only for appearance
5. Cushions, textiles and humid-climate care
Cushions are the part of a teak sofa that wears first, and in Thailand's humidity they are also the part that can go wrong fastest. Choose removable covers, and ask how they fasten and whether replacement covers can be ordered later — matching a fabric two years after purchase is far harder than matching it at the start.
Plan a routine that suits the climate: lift cushions at least weekly so the frame and seat platform can breathe, bring them in during heavy rain on covered terraces, and dry any damp foam completely before putting it back. Natural fabrics feel warmer but hold moisture, so for terraces and outdoor use prefer a solution-dyed outdoor fabric. Our teak furniture care guide covers the cleaning routine for frames and textiles through the humid season.
- Removable, washable covers
- Replacement covers available in the same fabric
- Cushions lifted and aired at least weekly
- Outdoor fabric specified for exposed terraces
6. Made-to-order sofas and export orders
Living rooms and terraces rarely match standard dimensions, which is why made-to-order sofas are normal rather than special. A sofa can be built to an exact length to fit a wall, made shallower for a small apartment, or produced as a set with a matching armchair, coffee table and side table in the same timber and finish so the whole room agrees.
M Furniture & Decor has been making solid teak furniture for more than five decades, from the main showroom on Phetkasem Road in Cha-am, Phetchaburi, with a second viewing location in Bangkok. Sofas are built to the size, timber and finish you specify, with the species and source of the teak confirmed for the actual pieces. For export orders we quote FOB or CIF and coordinate packing, freight, customs and insurance, and for project and hospitality work we can supply against a furniture schedule. The fastest route is WhatsApp on +66 614 456 154.
- Exact length, depth and height confirmed in writing
- Timber, cushion specification and finish agreed before production
- Lead time and price confirmed before any deposit
- Export terms and wood documents for overseas orders
Choose the sofa the room can actually hold
A teak sofa earns its place by fitting the room, carrying daily use without working loose, and suiting the environment it stands in. Measure first, insist on solid teak and real joinery, specify the seat by depth and foam density, and treat indoor, covered and outdoor versions as different pieces of engineering. Confirm dimensions, cushions, finish and delivery in writing before you order, and the sofa becomes the piece the whole house uses for decades.
