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Cornerstone Home Remodeling
Basement with waterproof plank flooring

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Basements finished for how basements actually behave

Below grade, moisture rules everything. We test the slab, build the right vapor and subfloor assembly, and specify materials that will not curl, cup or grow anything two winters later.

what we build

Everything a finished basement needs

Slab moisture & vapor testing

Calcium chloride or RH probe testing before a product is chosen, not after the floor buckles.

Subfloor systems

Dimpled panel or sleeper assemblies that break the slab contact and give the floor somewhere to breathe.

Waterproof flooring

Rigid-core LVP, porcelain tile and other below-grade-rated finishes that tolerate a wet event.

Basement stairs

Open or closed treads, code-compliant rise and run, handrail and balusters built to match upstairs.

Trim & finish carpentry

Base, casing and transitions detailed so the basement reads like the rest of the house.

Non-toxic material options

Low-VOC and formaldehyde-free specifications matter more in a space with less air exchange.

Basement floor installed over a below-grade slab
how we do it

The five steps to a basement floor that lasts

01
Test the slab

Moisture and flatness measured and written down. Everything after this depends on those numbers.

02
Build the vapor assembly

Vapor retarder and subfloor system sized to the readings, with the slab kept off the finish floor.

03
Specify below-grade-rated material

Only products rated for the conditions we measured, and we will tell you what to avoid.

04
Install with movement allowance

Expansion space at every perimeter and column, so seasonal movement has somewhere to go.

05
Finish stairs, trim and transitions

Stairs, base and doorway transitions completed so the space is genuinely done, not almost done.

Other services

Ready to finish the basement?

Tell us the square footage and whether you have ever had water down there. We respond within 24 hours, no pressure, no obligation.

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