Fire Rebuild & Reconstruction in Van Nuys: What Lies Under the Slab
On a Van Nuys fire rebuild, whether a vapor retarder sits under the old slab decides if the slab stays, what flooring it can take and how the quote reads.
Whether a vapor retarder lies under the old slab is something no one can tell by looking at a burned Van Nuys house. A missing one lets ground moisture rise into flooring, glue and the bottom of the walls. Finding out changes the plan. We test the concrete and, where needed, cut a small core, then decide with you whether the slab stays with a sealing coat or comes out.
How the slab is tested
Calcium chloride domes or in-slab relative humidity probes measure how much moisture moves up through the concrete. A small core shows the thickness, whether a plastic sheet lies underneath and what the base material looks like. We also check the surface for heat damage, since a hot fire can crack or spall the top layer and weaken it. Those results, with the engineer's opinion on the footings at the edge, tell us if the slab can carry the rebuilt walls and any second floor your family hopes to add.
What the finding changes
A slab that tests dry and sound can stay, which saves demolition and keeps the old floor height. A damp one may still stay if a moisture-blocking coating goes on before flooring, and that coating is priced as its own line. If the concrete is weak or the engineer needs deeper footings for an added story, the slab comes out and a new one is poured over a vapor retarder and a gravel layer. That choice also shifts the order of work, since plumbing under a new slab has to be laid and inspected first.
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Fire Rebuild & Reconstruction in Van Nuys: what families ask
Often, if zoning allows the extra floor area and the foundation can carry it. A bedroom added at ground level needs footings of its own, and one added upstairs may need the old ones deepened. The slab test tells us which path makes sense before drawings start.
Clearing and capped utilities lead, then the survey and the slab and footing tests. Those results decide whether the plans show the old slab or a new one. Whichever edition of the code is current when the set reaches LADBS is the one the drawings meet.
We list each scope in building order, and the slab work appears as its own item, whether that means a sealing coat or a new pour. An insurance adjuster can match the lines to the claim. Upgrades are kept separate. Coverage rests with your carrier, and any change to the plan gets a revised written quote.
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Tell us about the house and the space you need. We reply by phone or email to plan a visit.