What was under the old floor, and what went down

Flooring in San Diego remodels: LVP, hardwood and tile

In the photos from our own jobs, new floors almost always arrive with other work: fresh paint on the walls, a stair with new treads, a bathroom, a kitchen. That is also how California licensing treats them. Flooring by itself is a specialty trade with its own license, C-15. A B General Building contractor such as Construction Crafters Inc. (CSLB #1106596) installs floors as one of two or more unrelated trades in a project.

The floors in those photos: luxury vinyl plank over concrete slabs and over wood subfloors, wide-plank engineered hardwood, wood-look plank laid after leveling, tile in the bathrooms, and new treads on a staircase. Petar Gacic lists flooring and tile among his trades.

This page starts where every floor job starts, with what is under the old one.

What we found under the old floor

What we found under the old floor

Bare concrete slab

What we found
The old flooring came up to bare slab, with fans running over it.
What went down first
A black moisture sheet across the whole slab.
The new floor
Gray wood-look luxury vinyl plank, with the walls repainted gray.
Room with the bare concrete slab exposed and fans drying it before the new flooring
Black plastic sheeting laid over the concrete slab before the vinyl plank goes down
Room finished with gray wood-look vinyl plank and fresh gray walls

A floor that needed leveling

What we found
The old hard floor came up.
What went down first
Gray self-leveling compound poured across the floor to flatten it.
The new floor
Light wood-look plank across the landing and hall, carried into two bathrooms.
Self-leveling compound poured across a room to flatten the subfloor before new flooring
Upstairs landing with new light wood-look flooring running into the bedroom

Slab under a whole house

What we found
The old floors were torn out through the living areas down to the slab.
What went down first
A clean, flat slab ready for the new floor.
The new floor
Wide-plank engineered hardwood through the living room, kitchen and into a wine room.
Living area with the old flooring removed and built-ins wrapped, before the new hardwood
Family room with new wide-plank hardwood flooring
Small wine room with the new wide-plank hardwood floor

Wood subfloor upstairs

What we found
Carpet came up to the wood subfloor in the bedrooms.
What went down first
Low spots and seams patched flat.
The new floor
Vinyl plank through the bedrooms and the primary suite.
Carpeted primary suite before the flooring work, closet contents wrapped in plastic
First rows of vinyl plank laid over the prepared plywood subfloor along a chalk line
Primary suite with new gray wood-look vinyl plank running from the bathroom to the closets

A staircase

What we found
A wood stair with stained treads and wood balusters.
What went down first
Protection over everything that stayed.
The new floor
New wood-look treads, with the balusters finished white.
Oak staircase and bare concrete floor before the new stair treads and flooring
Staircase with new wood-look treads, the white balusters protected during the work
LVP, engineered hardwood, laminate and tile

LVP, engineered hardwood, laminate and tile

General properties, which vary by product. Follow the manufacturer's instructions for the floor you choose; they decide underlayment, moisture protection and how it is fastened.

Luxury vinyl plank (LVP)

Core
Vinyl, often with a rigid core.
Water
Many products are rated waterproof.
Over a slab
Commonly floated over a slab with the moisture protection the maker specifies.
Refinish
Cannot be sanded; a damaged plank is replaced.
On our jobs
Over a concrete slab with a moisture sheet, and over a wood subfloor upstairs.

Engineered hardwood

Core
A real wood top layer over a plywood or fiberboard core.
Water
Real wood on top: wipe spills up.
Over a slab
Glued or floated over a slab, depending on the product.
Refinish
Can be refinished if the top layer is thick enough.
On our jobs
Wide planks through a whole floor of a house, kitchen and wine room included.

Laminate

Core
A printed wear layer over a fiberboard core.
Water
The surface is tough; standing water at the seams is the risk.
Over a slab
Floated over an underlayment.
Refinish
Cannot be refinished.

Wood-look tile

Core
Porcelain or ceramic.
Water
Does not mind water; grout lines need sealing or a resistant grout.
Over a slab
Set in mortar on a flat, solid base.
Refinish
Lasts; grout can be cleaned or regrouted.
What the floors came with

What the floors came with

Floors are rarely the whole job on our photo set. On each of these, flooring was one of the trades:

Vinyl plank over a slab
walls repainted, vinyl plank over a concrete slab
Wood-look plank laid after leveling
rooms papered and masked for spray painting, light wood-look plank floors laid after leveling
Vinyl plank and new stair treads
balusters refinished, new floors and a refinished staircase
Vinyl plank in the bedrooms
a full rebuild after a fire, a two-story house rebuilt after a fire
Vinyl plank
a barn door, a ceiling repaired and repainted, a bathroom refresh, a house with a barn door, new floors, a bath refresh and a fence

If you are planning floors, it is worth asking what else should happen first. Paint, trim and stair work are easier before the new floor goes down, and a bathroom or kitchen remodel decides where the floor ends.

How a new floor goes in

How a new floor goes in

01

Protect and remove

Furniture out or covered, doors and stairs protected, the old carpet, vinyl or tile taken up.

Carpeted primary suite before the flooring work, closet contents wrapped in plastic
02

Read the base

Slab or wood subfloor, flat or not, dry or not. This is where surprises show up.

Room with the bare concrete slab exposed and fans drying it before the new flooring
03

Flatten and protect

Leveling compound in the low spots, seams patched, and the moisture protection the floor's maker calls for over a slab.

Black plastic sheeting laid over the concrete slab before the vinyl plank goes down
04

Lay it out

A straight starting line, planks staggered, the layout planned around doorways and stairs so cuts do not land in the wrong place.

Rigid vinyl plank being installed over plastic sheeting on a concrete slab
05

Finish the edges

Transitions at doorways and other floors, stair nosings, then baseboard.

Room finished with gray wood-look vinyl plank and fresh gray walls
Questions

Questions people ask

  1. Note 01

    Do you install flooring on its own, without other work?

    In California a floors-only contract is specialty work under the C-15 flooring license. Construction Crafters Inc. holds a B General Building license, which covers floors as one of two or more unrelated trades in a project, such as floors with paint, a stair, a kitchen or a bathroom.

  2. Note 02

    Can vinyl plank go directly over a concrete slab?

    Usually, if the slab is clean, flat and dry and the plank gets the moisture protection its maker specifies. On one of our jobs a black moisture sheet went across the whole slab before the gray vinyl plank went down.

  3. Note 03

    LVP or engineered hardwood?

    Vinyl plank shrugs off water and suits slabs, kitchens and busy houses; engineered hardwood is real wood on top, warmer underfoot and can be refinished if its top layer is thick enough. Our comparison post goes deeper, with one install of each.

  4. Note 04

    Can you put new flooring on stairs?

    Yes. On one of our jobs the stair got new wood-look treads to match the floor, and its balusters were finished white.

  5. Note 05

    Do you remove the old flooring?

    Yes. On our jobs the old carpet or flooring comes up first, which is also when we see what the slab or subfloor needs.

Tell us the goal.

The consultation is free, and every proposal is based on a real visit to your property. We reply within 2 to 3 business days.