Roof Decking Replacement in San Antonio

We replace rotted or damaged decking, including full re-decks, so your new roof goes on a solid base.

What Is Roof Decking?

Decking is the plywood or OSB under your shingles or metal. Everything on the roof is nailed to it. If the decking is bad, a new roof on top of it won’t sit right or hold right.

You can’t see most of it from the ground or the attic. The best time to check it is when the old roof comes off.

Signs Your Decking Is Bad

  • Soft spots: The roof gives when you walk on it.
  • Sagging: A dip or wave in the roof line you can see from the street.
  • Rot: Dark, wet or crumbling wood, usually from an old leak.
  • Delamination: Layers of plywood separating or swelling.
  • Nails not holding: Nails pull out or spin, so shingles and metal can’t stay fastened.
  • Attic stains: Water stains or daylight on the underside of the roof.

What We Do

  • Tear-off and check: We take the old roof off and check the decking across the whole roof.
  • Show you: We take photos of what we find and show you before we replace anything.
  • Replace bad sheets: Rotted or damaged sheets come out and new ones go in.
  • Full re-deck when needed: If too much of it is bad, we re-deck the whole roof.
  • Then the new roof: Underlayment goes down over solid decking, then the new shingles or metal.

We follow local building codes and pull the permits.

Decking is part of a full roof replacement. If you only have a small soft spot from a leak, see roof repair. Not sure? Start with a free roof inspection. If storm damage is involved, see insurance claims.

Recent Re-Decks

Bare Rafters

Old roof and decking off, whole slopes open down to the rafters.

San Antonio, TX

Whole roof slope stripped to bare rafters during a full re-deck in San Antonio, TX
Old decking removed down to the rafters before new plywood in San Antonio, TX
Bare rafters exposed across a roof section during decking replacement in San Antonio, TX
Open roof framing after tear-off of rotted decking in San Antonio, TX

Old Plank Decking Off

Old roofs often have spaced plank boards. We strip the roof and re-deck it with solid sheets.

San Antonio, TX

Old spaced plank decking exposed after tear-off before a full re-deck in San Antonio, TX
Whole roof slope stripped to old plank decking during a re-deck in San Antonio, TX

New Decking Going On

New OSB sheets nailed to the rafters, then underlayment over it.

San Antonio, TX

New OSB roof decking installed with underlayment going down in San Antonio, TX

Finished

New shingles on a solid deck.

San Antonio, TX

Finished gray shingle roof after a full re-deck in San Antonio, TX
Finished brown shingle roof after a full re-deck in San Antonio, TX

See finished roofs on our work.

Decking Questions

How do you know if my decking needs replacing?

Some signs show before tear-off, like soft spots, sagging or attic stains. Most of it we only see once the old roof is off. We check it then and show you photos.

Do you replace all the decking or just the bad parts?

Only the bad sheets, unless too much of it is rotted or damaged. Then we re-deck the whole roof. We show you photos before we do either.

Can you put a new roof over bad decking?

We don’t. New shingles or metal need solid decking to nail into, or they won’t hold.

Is decking covered by insurance?

Sometimes, when it’s damaged as part of a covered claim. It depends on your policy. See insurance claims.

Start With a Free Roof Inspection

We check your roof and show you what we find. See what the inspection covers, or check the areas we serve.

Worried About Your Decking? Call 418-ROOF

Family-owned and based in San Antonio. Serving San Antonio, Live Oak, Universal City, Converse, Schertz, Cibolo, Garden Ridge, New Braunfels, Boerne, Seguin, Helotes and the Texas Hill Country.

Financing available. Ask us about payment options when you call or text.

Prefer to text? Text (210) 418-7663

Rattler Roofing