- Test the slab first. Concrete can look dry and still push moisture up.
- Best all-round basement floor: rigid-core (SPC) vinyl plank over a vapour barrier.
- Engineered hardwood can work if the slab tests dry and there's no water history.
- Skip: solid hardwood, standard laminate, and carpet if there's ever been water.
Basements and suites make up a huge share of the floors we do. Lots of Lower Mainland homes have rental suites downstairs, and the water table is high in many neighbourhoods. Here's how we approach them.
Step 1: find out what the slab is doing
- History: any past leaks, flooding, efflorescence (white powder) or musty smell?
- Testing: RH probe testing in the slab, or the method the flooring maker's warranty requires. A quick DIY check: tape a square of plastic to the floor for a couple of days and see if moisture forms underneath. It's not a replacement for a proper test, but it tells you something.
- Flatness: basement slabs often have dips and humps that need grinding or self-levelling compound before a click floor.
Step 2: choose the right floor
| Floor | Basement verdict |
|---|---|
| SPC vinyl plank | Best default. Doesn't care about moisture in the plank, dent-resistant. |
| WPC vinyl | Good. Warmer and softer underfoot, dents more easily. |
| Glue-down vinyl | Good if the slab is well prepped and tests within the adhesive's limits. |
| Water-resistant laminate | Possible in a dry, tested basement with a vapour barrier. |
| Engineered hardwood | Possible if tested dry with no water history. Floating or glued, per the maker. |
| Porcelain tile | Great and long-lasting, but cold and hard. Usually with a membrane. |
| Carpet | Cozy for TV rooms, but a disaster after any water event. |
| Solid hardwood | No. |
Step 3: underlay and vapour barrier
On concrete, most floating floors need a vapour barrier (often 6-mil poly) or an underlay with one built in. If the plank has an attached pad, check whether the maker still wants poly underneath, as many do on concrete. Don't double up pads unless the maker allows it.
Step 4: think about the suite
- Use a 20+ mil wear layer for rental suites. Tenants are hard on floors.
- Pick a mid-tone that hides wear between tenants.
- Keep a spare box labelled in the suite storage or your garage.
- Consider the sound to the upstairs: suites with a good underlay are quieter for everyone.
Mistakes we see
- Laminate over an untested slab, with swelling a year later.
- Click floors laid over bumpy concrete, with joints separating.
- Carpet in a basement that later flooded.
- No gap left at the concrete walls, so the floor peaks in summer.
Common questions
What is the best flooring for a basement?
For most basements, rigid-core (SPC) vinyl plank over a vapour barrier on a tested, flat slab. It handles moisture and wear well and is warmer than tile.
Can you put laminate in a basement?
Only a water-resistant laminate, in a basement that tests dry and has no water history, with the vapour barrier the maker requires. Otherwise choose vinyl plank.
Do I need a vapour barrier under vinyl plank on concrete?
Usually, yes. Many makers require 6-mil poly or an approved underlay with a built-in barrier on concrete, even if the plank has an attached pad. Check the install guide.
Can engineered hardwood go in a basement?
Sometimes. If the slab tests within the maker's moisture limits and there's no history of water, many engineered products can be floated or glued down below grade. Check the specific product's approval.
Who's writing this: Rose and Thorn Flooring is a flooring company in Surrey, BC. We install floors for a living, so yes, we'd love to do yours. But nobody pays us to say nice things about a product, and we don't earn commission from any brand. If something here is wrong or out of date, text us at 604-716-4160 and we'll fix it.