Kitchen: yes, and it is the room we install hardwood in most. Powder room: yes, with engineered planks. Full bathroom: only engineered, only for careful adults. Basement: solid never, engineered only over a slab that tests dry, and vinyl plank is usually the smarter call. Wood does not mind humidity; it minds standing water and moisture from below. Each of these rooms has a different amount of both, which is why the answer changes from door to door. Installation labor is $3.25 per sq ft for engineered or solid at Wills Flooring, material quoted separately.
In Sammamish the question almost never arrives as "can I put wood in a bathroom." It arrives as "we want the same floor everywhere." Plateau homes in Klahanie, Trossachs and Sahalee were built with open main floors where the kitchen, dining and family room are one space, and the builder oak stops at a strip of tile in front of the sink. Homeowners want that seam gone, and while they are at it they ask about the powder room and the daylight basement. Here is where we say yes, where we say engineered only, and where we say no.
Kitchens: yes, with three rules
Run it continuous, no threshold
The whole point is one floor from the front door through the kitchen. Solid or engineered both work in a kitchen on a plywood subfloor. We run the planks straight through where the old tile was, after removing the tile and leveling the backer, so nothing tells you where the kitchen starts.
Site-finish it if you can
Prefinished planks have a small bevel at every edge, and in a kitchen those bevels collect drips and grit. An unfinished floor installed at $2.75 per sq ft and then sanded and finished with three coats of Bona water-based seals the seams as one surface. It costs more but wipes like a countertop.
Protect the two leak points
Every kitchen hardwood failure we have replaced in Sammamish came from a dishwasher or a fridge line, not from cooking. Braided steel supply lines, a drip pan under the dishwasher and a $20 water alarm behind the fridge cost less than one damaged board.
Pick a forgiving floor
White oak, hickory or maple in a matte or satin finish hides the drips and crumbs of a family kitchen. Dark stains and glossy sheens show every water spot. Wire-brushed textures forgive dropped pans. We bring samples from Metropolitan Hardwood and set them under the kitchen light.
Bathrooms: powder room and full bath are different questions
| Room | Hardwood? | Why | What we recommend |
|---|---|---|---|
| Powder room, no shower | Yes | Only splash from a sink and a toilet. Same humidity as the hall. | Engineered or solid, continued from the hall floor, silicone at the toilet flange. |
| Primary bath, adults, good exhaust fan | Engineered, with care | Shower steam swells solid boards. Engineered plywood cores move far less. | Engineered, glued down, bath mats, fan on a timer. Honest talk about upkeep first. |
| Kids' or guest bath with a tub | No | Splashed tubs, wet towels on the floor, an overflow once a year. | Vinyl plank or tile, with a flush transition to the hall hardwood. |
| Laundry room | No | Washer supply lines fail; a burst hose floods the floor while you are at work. | Vinyl plank. Move the washer and dryer once, not twice. |
Engineered hardwood is more stable, not waterproof. A toilet supply leak will still ruin it if it runs for a weekend.
Basements: the slab decides, not you
- Test the concreteWe test slab moisture at the estimate with a calcium chloride kit or an in-slab relative humidity probe. Above the adhesive maker's limit, hardwood is off the table no matter what finish you like.Sammamish daylight basements on sloped lots often test dry on the walk-out side and damp at the back wall.
- Solid hardwood: never below gradeSolid boards have to be nailed into wood, and the concrete under a basement breathes moisture year round. Solid wood on a slab cups by the first winter.This is a manufacturer rule, not a Wills preference.
- Engineered: glue-down onlyOn a dry slab we glue engineered planks down with a moisture-cure urethane adhesive that also acts as a vapor retarder. Floating engineered over a pad is the other option, with a 6 mil poly barrier.Labor is $3.25 per sq ft either way. Adhesive and prep are quoted at the estimate.
- Or choose vinyl plank and sleep wellMost Sammamish basements we look at get vinyl plank at $2.50 per sq ft labor, matched in tone to the hardwood upstairs. It shrugs off a seep the hardwood would not.A dehumidifier is a good idea with either floor.
Price your Sammamish hardwood installation
Hardwood Installation Calculator
Installation pricing from our published rate card. Material is quoted separately based on the floor you choose.
A typical plateau main floor with the kitchen included runs about 1,400 sq ft: 1,400 × $3.25 = $4,550 in installation labor, plus the flooring you choose. Adding a 40 sq ft powder room to that run is another 40 × $3.25 = $130, which is why we almost always say yes to the powder room. A 13-stair flight down to a daylight basement is 13 × $125 = $1,625 if you want hardwood treads to match.
Solid vs engineered in the wet rooms
Solid hardwood
Fine for
- Kitchens on a plywood subfloor
- Powder rooms with no shower
- Homes where you want to sand and refinish for 50 years
- Matching the existing solid oak in a 1990s Sammamish home
Engineered hardwood
Required for
- Any bathroom with a shower or tub
- Anything over a concrete slab, including daylight basements
- Rooms with in-floor radiant heat
- Wide planks over 5 in where seasonal movement would open gaps
The rule we will not bend: We do not install hardwood over a slab we have not moisture tested, even if another company already said it was fine. The test takes minutes at the free estimate, and it is the difference between a floor that lasts and a floor we replace in two years.
When to stop and choose something else
- Small children and a tub. A bath-time splash every night is standing water every night. Vinyl plank in a matching tone is the honest answer here.
- The dog's water bowl lives in the kitchen. Hardwood is still fine, but put the bowl on a tray with a lip. Bowls are the number one source of the black ring we sand out of kitchen floors.
- Any history of basement water. If the previous owner mentioned a wet corner, or the lot drains toward the house, the basement gets vinyl plank. We will not be talked into hardwood there.
- A cold, unconditioned basement. Big swings in temperature and humidity move wood more than a steady damp does. Condition the space first or pick a floor that does not care.
- HOA and resale. Sammamish buyers expect hardwood on the main floor and are indifferent to it in bathrooms. Spend the hardwood budget where it is seen, and see our hardwood installation page for what is included.
Kitchen, bath and basement hardwood questions
What Sammamish homeowners ask when they want one floor everywhere.
Is engineered hardwood waterproof enough for a bathroom?
Can you put solid hardwood in a kitchen?
What is the best way to install hardwood in a basement?
How much does it cost to add hardwood to a kitchen in Sammamish?
Will hardwood in a kitchen hurt resale value?
Can I put hardwood over the existing kitchen tile?
Find out which rooms qualify
Free in-home estimate anywhere in Sammamish. We test the slab, check the subfloor, bring hardwood and vinyl plank samples, and give you a firm written price room by room.
Wills Flooring serves Sammamish, Everett, Seattle, Lynnwood, Edmonds, Kirkland, Snohomish and the rest of Snohomish and King County from our Lynnwood showroom. See our hardwood installation service, published price list, hardwood over a concrete slab, engineered vs solid hardwood and vinyl plank flooring options and installation.
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