Sagging roof deck
Sagging Roof Deck in Granbury
What you might be seeing
A wavy or sagging roof plane in Granbury can be deck or rafter damage — do not walk a soft roof.
A dip or wave visible from the street
Interior cracks under the same plane
A spongy feel if someone already walked it
Stains or daylight in the attic below the dip
Common causes
Wet or rotten decking
Long leaks or two layers can hold moisture against the sheathing.
Rafter or truss damage
A fallen limb or past fire can bow a bay that shingles then follow.
Overloading from layers
A third layer or heavy overlay can sag older Hood County framing.
Poor ventilation
A hot, wet attic can weaken decking over years of Texas summers.
Safe checks to try
Only try steps you are comfortable with — stop if anything feels unsafe.
Photograph the roofline from the ground on two sides.
Stop if: Do not walk a roof that looks soft or dipped.
Look from the attic, if safe, for stained or sagging sheathing.
Ask every bidder to inspect from the attic, not only the street.
Keep people and pets out from under a clearly sagging ceiling.
When to call a professional
- The plane is visibly dipped or wavy
- You feel bounce or softness on a ladder (stop climbing)
- A contractor wants to overlay without checking the deck
- Interior drywall is cracking under the same area
What to ask if you hire
- 1.Is this decking, rafters, or both — and how will you show me?
- 2.Will you open the attic before quoting a tear-off?
- 3.What happens if you find more rot after tear-off starts?
- 4.Who engineers a structural fix if rafters are involved?
What to look up next
- The sagging-plane quote says patch vs tear-off and why
- Sheathing replacement is a line item or a per-sheet price
- Another roofer opened the same attic bay before bidding