Roof valleys collect leaves and pine needles fast in Conroe. When that debris stays wet through our humid summers the step flashing starts to lift. I cut out the bad section, slip in new 26-gauge galvanized step flashing, and bed it in self-adhered membrane rated for 240-degree heat. Cheap crews often skip the membrane and just slap on sealant that cracks the first winter.
Most houses around Lake Conroe and April Sound were built with open valleys. Those open valleys let wind-driven rain from our mild winters push water under the shingles. I close the valley with a 16-inch W-metal and seal the edges with butyl tape so water never reaches the deck again. Montgomery County does not require a permit for this repair unless we open more than 100 square feet.
A common mistake is nailing through the valley metal itself. That creates new holes that leak in the next rain. I always nail only the top edge of the metal and let the shingles cover the fasteners. In Grand Central Park homes the extra heat off the lake makes asphalt shingles expand more, so I leave a 1/8-inch gap at each overlap.
Call 936-555-0199 right now if water is already running down an interior wall. We answer 24/7 and can usually stop the active leak the same day. Mon-Sat we are at the shop from 7am to 7pm for scheduled work.
Roof Valley Leak Repair Services We Offer
✓Emergency Roof Valley Leak Repair
Same-day stop for active valley leaks that reach the ceiling. We carry W-metal and membrane on the truck so the fix happens in hours not days.
✓Roof Valley Leak Repair April Sound
Targeted valley work on lakefront homes where pine needles and humidity speed up flashing failure.
✓Commercial Roof Valley Leak Repair
Low-slope commercial valleys on strip centers near Conroe Town Green. We use 24-gauge steel and heat-welded seams rated for foot traffic.
✓Roof Valley Flashing Replacement
Full valley tear-out and new step flashing plus underlayment when the old metal has rusted through.
✓Roof Valley Leak Repair Grand Central Park
Fix for newer builds where short valleys meet the main roof and trap water behind the ridge.
Roof Valley Leak Repair Cost in Conroe, TX
| Service | Typical Range | What Affects It |
|---|---|---|
| Repair a roof valley leak | $450–$950 | Single valley under 20 feet with no deck damage. |
| Replace valley flashing on two-story house | $750–$1200 | Extra time and ladder setup for height. |
| Fix valley leak plus rotted decking | $900–$1600 | Price rises with how many sheets of plywood need replacement. |
| Emergency roof valley leak repair | $650–$1100 | After-hours or weekend call adds the urgency fee. |
| Free estimate for roof valley leak repair | Free | We come out and write the price before any work starts. |
Ranges are typical for Conroe, TX and confirmed with an exact written quote before any work starts.
How it works
- 1
Inspect the valley from attic and roof
We check for wet decking and map how far the water traveled. Takes 30 minutes.
- 2
Remove shingles and old flashing
Lift shingles two feet on each side and pull the bad metal. 1-2 hours.
- 3
Install new membrane and metal
Lay self-adhered underlayment then set W-metal or step flashing. 2-3 hours.
- 4
Reinstall shingles and test
Replace shingles, seal edges, and run water down the valley to confirm no leaks. 1 hour.
Pricing
Most valley repairs fall between $450 and $1200. Bigger access issues or rotted decking push the high end.