NR Building Solutions

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 panel3/4" tongue-and-groove, glued and screwed to the joist
Wet areasMoisture-resistant panel under bath and laundry
Edge conditionCut back to a joist, never a mid-span butt joint
Before close-upBelly 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

  1. Walk-through

    We walk the units or the roof, or work from the walk sheet you already have.

  2. Written scope

    A written scope and price before any work starts, priced as shown above.

  3. The work

    Our own crews do it, to the written scope. Anything extra is a written change order first.

  4. 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 bid

Pricing a whole community? Request a park-wide quote.

Common questions

You can, and it will telegraph through and fail again. Luxury vinyl plank is thin and flexible — it follows the deck underneath it rather than bridging a soft spot, so a floor that flexes under a foot before the install will flex the same way after it.

We sound the floor across the whole home rather than only where the visible damage is. Water travels along a joist bay, so the soft area is almost always larger than the stain, and the edge of the replacement should land on a joist rather than mid-span.

A torn belly wrap lets ground moisture into the insulation, and saturated insulation holds it against the underside of the deck. Replace the deck without closing the belly and the new panel is in the same environment that destroyed the old one.

We identify it and we tell you what it is. A supply line under a bath, a failed wax ring, a roof leak that ran down a wall — each is a different repair, and replacing the deck without resolving the source is the most expensive way to do the job twice.

W-9, written safety programme and certificates of insurance (GL and workers’ comp): being prepared. What is published so far is on vendor credentials.