Cork Flooring: Pros and Cons, Glue-Down vs Click, and Where It Works

Cork flooring has a loyal following, and for good reasons. It is one of the few hard-surface floors that feels comfortable to stand on for hours, and it softens the sound of footsteps in a way tile and laminate can't. It is also easy to put in the wrong room. This guide explains what cork is, the real pros and cons, the difference between glue-down tiles and click planks, and where cork works well and where another floor is the better choice.

What cork flooring is

Cork is the bark of the cork oak, a tree grown mainly around the western Mediterranean. The bark is stripped from the trunk by hand, and the tree is left standing to grow a new layer, which is harvested again several years later. That is why cork is often described as a renewable material.

Much cork flooring is made from granules left over from making wine stoppers. The granules are pressed together with a binder into blocks or sheets, then sliced into tiles or veneers. Some products have a printed or veneer surface that looks like wood or stone; others show the natural speckled cork pattern.

The material itself is a honeycomb of tiny cells filled with air. Those cells explain nearly everything about cork as a floor. They compress under load and spring back, which makes it soft and resilient. The trapped air slows heat flow, so cork feels warm to bare feet. The structure also absorbs impact sound. The same structure means a heavy, narrow load can crush the cells for good, and an open, unsealed surface can absorb liquids.

Cork floor pros

Warm underfoot. Cork doesn't feel cold the way tile or stone does, even over concrete. In an Ottawa winter that is a real benefit, especially in kitchens, bedrooms and basements where people walk barefoot.

Soft and comfortable. Cork gives slightly under each step. People who stand at a kitchen counter for long periods often notice less fatigue. Dropped glasses and dishes sometimes survive a fall that would break them on tile.

Quiet. Cork reduces footstep noise in the room and impact noise to the room below. It is also widely used as an acoustic underlay under other floors for the same reason; our underlayment guide covers cork underlay.

Natural look and feel. Natural cork has a warm, textured appearance that suits modern and mid-century interiors. Wood-look and stone-look cork products are available too.

Cork is also often promoted as naturally resistant to mould and insects. That may be true of the cork itself, but the binder, the core and the finish matter as much as the cork, so rely on the product's own specifications rather than general claims.

Cork floor cons

Dents. Cork recovers from footsteps and light furniture, but heavy, narrow loads leave permanent marks. Fridge and stove feet, piano legs, heavy bookcases and thin chair legs are the usual culprits. Wide furniture cups and felt pads spread the load, and appliances are rolled on protection, never dragged.

Fading in sunlight. Cork changes colour under strong sun. Natural cork often lightens or shifts in tone where the light falls, and the difference shows when a rug or furniture is moved. Blinds, window film and moving rugs now and then help keep the colour even.

Scratches from grit and claws. The surface finish, not the cork, takes the wear. Grit tracked in from outside acts like sandpaper, and large dogs with untrimmed nails can scratch the finish. Good mats at entries make a big difference. Our guide to the best flooring for dogs compares cork with tougher surfaces.

Water at the seams. The cork surface resists a spill if it is properly finished. Click cork planks, though, usually have a fibreboard core, and that core swells if water gets into the joints, just like laminate. Glue-down cork with a continuous site-applied finish is more water-tolerant, but standing water and floods still damage it.

Finish maintenance. A cork floor's protection is its finish. In busy areas the finish wears and needs a maintenance coat from time to time, as the maker describes. Skipping that lets the cork itself wear, stain and take up water.

Glue-down cork tiles vs click cork planks

Cork comes in two main forms, and they behave so differently that it is worth treating them as two products.

Glue-down cork tiles are solid cork, often in square or rectangular tiles. They are bonded to the subfloor with the adhesive the maker specifies, often a contact adhesive applied to both surfaces. Many are sold unfinished or with a factory coat, and are then finished on site with several coats of a floor finish once installed. That site finish seals the seams as well as the surface, which is why glue-down cork has a long history in kitchens. The catch is preparation. Glue-down cork is thin and shows every bump, trowel mark and seam in the subfloor, so the subfloor must be smooth and flat, often with a skim coat. The work also takes longer, with adhesive and finish drying times.

Click cork planks are floating floors. The common build is a cork wear surface on a high-density fibreboard core, often with a cork backing, and a click joint like laminate. They install quickly over a flat subfloor, with the expansion gap a floating floor needs. Because of the fibreboard core, they share laminate's weakness: water in the joints swells the edges. Some newer products use a different core designed to resist water, so check what your product actually has.

A simple way to choose: glue-down for kitchens and areas where spills are likely, if the subfloor can be prepared for it. Click for bedrooms, living rooms and offices, where speed and a forgiving installation matter more. In both cases, the product's instructions decide where it may go.

Finishes and sealing cork

Cork floors are finished with a clear coat, commonly a polyurethane or a similar floor finish, either at the factory, on site, or both. Some makers recommend an extra site-applied coat over factory-finished glue-down tiles, to seal the joints between tiles. Others don't allow it. Follow the instructions for your product, because the wrong finish can affect adhesion and the warranty.

A matte or satin finish hides scratches and scuffs better than a gloss finish. When the finish starts to look dull in the traffic paths, a maintenance coat applied over a cleaned and lightly abraded surface restores it before the cork itself wears. That is easier and cheaper than waiting until the cork is worn through. For everyday cleaning, makers usually ask for a dry mop or vacuum, a barely damp mop and a pH-neutral cleaner. Steam mops and soaking the floor are out.

Cork flooring in basements

Cork's warmth makes it tempting for a basement over cold concrete. The question is moisture. A concrete slab releases moisture vapour, and both the adhesive under glue-down cork and the fibreboard core in click planks can be affected by it.

If you want cork below grade, choose a product the maker approves for basements. Test the slab for moisture as the maker specifies. Use the vapour barrier or moisture system the instructions call for. Fix any water problems first. A basement that has ever flooded or seeps in spring is not a good place for cork, or for any floor with a wood-based core. For most Ottawa basements, vinyl plank or porcelain tile is the safer choice. Our guide to the best basement flooring covers slab testing and the options in detail.

Kitchens, bathrooms and condos

Kitchens. Cork has a long track record in kitchens because it is comfortable to stand on. Glue-down cork with a sealed site finish suits kitchens best. With click cork, wipe spills promptly and keep the dishwasher and sink areas dry. Plan the order of work with the cabinets in mind; our guide to kitchen flooring before or after cabinets explains why floating floors stop at the cabinet bases.

Bathrooms. Some glue-down cork products are approved for bathrooms with a full sealed finish and sealant at the tub and toilet. Click cork with a fibreboard core is a poor choice for a full bathroom. Cork is never a shower floor. For most bathrooms, tile or vinyl is more forgiving; our guide to tile vs vinyl in kitchens and bathrooms compares them.

Condos and multi-unit buildings. Cork's sound absorption makes it a natural fit for buildings where footsteps travel. Condo rules still apply, though. Most buildings set a minimum sound rating for the floor assembly, and the cork floor alone may not meet it without an approved underlay. Get the building's rules and approval before ordering. See condo flooring rules.

Cork also works at scale. At Hintonburg Rentals, a 270-unit building, Agora installed 10,362 sq ft of cork flooring as part of the project.

Cork vs vinyl and laminate

Cork, vinyl plank and laminate are often compared because they sit at similar points in a budget. They are very different floors.

Choose cork when comfort, warmth and quiet matter most and the room is dry or well managed. Choose vinyl where water, pets and low maintenance come first; our guide to choosing vinyl plank flooring explains how to judge it. Our LVP vs laminate comparison covers the other two in detail. Sheet vinyl is another resilient option for laundry rooms and budget bathrooms; see sheet vinyl flooring.

Installing cork: acclimation, subfloor and common mistakes

Cork reacts to temperature and humidity, so most makers ask for the boxes to acclimate in the room for a set time, with the heating or cooling running normally. Follow the maker's time, not a rule of thumb. Dry winter air and humid summers in Ottawa are both a test for any floor with a wood-based core, and many makers list an indoor humidity range for the warranty.

The subfloor has to be flat for click cork and smooth as well as flat for glue-down cork. Dips and humps are corrected with patching or self-levelling compound, and a wood subfloor is screwed down so it doesn't move. Common mistakes include:

• Glue-down cork over an unprepared floor, so every seam and ridge shows through.
• No expansion gap for click planks, or a floating floor pinned under cabinets.
• Click cork with a fibreboard core in a full bathroom or a damp basement.
• Skipping the site finish or maintenance coats the maker calls for.
• Heavy appliances dragged across the new floor.

Transitions to tile and other floors are planned before the floor goes down; see floor transition strips. For what affects the price of a new floor, see flooring cost in Ottawa. Our vinyl, LVP and cork flooring page covers the resilient floors we install.

Frequently asked questions