Interior
Subfloor replacement
Replace the failed decking rather than covering it, so the new flooring is not sitting on the same soft spot in eighteen months.
- How it is priced
- Per square foot of deck replaced, plus per-unit mobilization
- Timeline
- Set in your written estimate, after the walk-through
- Who performs it
- NRBS crews, self-performed
What the price covers
In the scope
- Standard decking: 3/4" tongue-and-groove OSB or plywood, rated for the span
- Wet-area upgrade: Moisture-resistant panel under bath and laundry
- Fastening: Glued and screwed to the joist, not nailed
- Always inspected first: Belly wrap, insulation and the supply line above the failure
Not in the scope
- Anything not written in the scope. Extra work found on site is raised as a written change order before it is done.
What fails, and why it fails where it does
Manufactured home decking fails in predictable places, and the pattern tells you what caused it. Failure at the bath perimeter is almost always a wax ring or a supply connection. Failure along one side of the home at the wall line is usually the envelope — a roof leak that ran inside the wall cavity, or siding that stopped shedding. Failure in a broad soft patch with no obvious source is usually the belly: torn wrap, wet insulation, and constant ground moisture held against the underside of the deck.
We sound the entire floor before pricing rather than only the area around the stain. Water moves along a joist bay, so the failed region is reliably larger than the mark on the surface. The replacement edge should land on a joist, not mid-span, which means the panel you actually cut is bigger than the panel that is actually rotten.
Partial versus full deck
A partial replacement cuts out the failed sections back to sound decking on a joist and lets in new panel, glued and screwed. It is the right call when the failure is localized and the rest of the deck sounds solid — a bath perimeter, one corner of a kitchen, a run along an exterior wall.
A full deck replacement takes the entire floor out. It is the right call when soft areas appear in more than one part of the home, when the belly has been open long enough that everything is damp, or when a full remodel is happening anyway and the incremental cost of doing it all at once is small against the cost of coming back.
| Standard panel | 3/4" tongue-and-groove, glued and screwed to the joist |
|---|---|
| Wet areas | Moisture-resistant panel under bath and laundry |
| Edge condition | Cut back to a joist, never a mid-span butt joint |
| Before close-up | Belly wrap and insulation inspected and repaired |
The sequencing rule
Belly wrap comes first. Every time.
This is the single most common expensive mistake we see on manufactured housing renovation programmes: a subfloor replaced and a new floor laid over a belly that is still open. The new deck sits in the same wet environment that destroyed the old one, the failure comes back on roughly the same timeline, and the second repair costs more than the first because the finish flooring is now also scrap.
If you are budgeting subfloor work across a community, budget the belly work with it. See belly wrap and insulation for what that scope covers.
Also in interior
How the job runs
Walk-through
We walk the units or the roof, or work from the walk sheet you already have.
Written scope
A written scope and price before any work starts, priced as shown above.
The work
Our own crews do it, to the written scope. Anything extra is a written change order first.
Final walk-through
We walk it again with you and close out anything on the punch list.
Step one is your scope, as it already exists.
Request a bidPricing a whole community? Request a park-wide quote.
Common questions
W-9, written safety programme and certificates of insurance (GL and workers’ comp): being prepared. What is published so far is on vendor credentials.
Usually specified alongside
- Belly wrap & insulationClose the underside of the home before anything is installed on top of it — this is the sequencing error that costs the most money in this category.
- Flooring & LVPDurable flooring chosen for how you live on it — one spec for a whole community or a single room in your home.
- Demolition & haul-offStrip a unit back to a sound shell, and get the debris off the property as part of the job rather than leaving a pile at the lot line.
Where we perform subfloor replacement
Self-performed crews based in Houston. Each city page carries local housing context.
