Tamko Underlayment & Deck Repair Nationwide

Tamko Underlayment & Deck Repair: The Houston Owner’s Guide

We stock and install Tamko-compatible underlayment and deck repair materials across Houston, with most underlayment replacements running $450 – $900 and decking repairs typically landing between $600 – $1,400 depending on how many sheets have rotted and how much tear-off is involved. Most jobs are completed same-day once we’re on site. The usual discovery path starts with a leak at the eave line, a soft spot felt underfoot in the attic, or a roofer from another company telling you the decking is shot and the underlayment never got replaced when the shingles did.

Call (254) 566-3573

Here’s the reality Greg Holloway has seen repeatedly in Houston: a previous crew slapped new shingles over old, brittle underlayment, and now the decking beneath is paying for it. You’ll know the price before we touch the roof.

Key Takeaways:

• Tamko underlayment failures in Houston are usually traced to heat degradation, improper fastening, or water trapped under old shingles.
• We carry Tamko-compatible underlayment on our trucks, plus decking stock for same-day replacement.
• Every repair includes a written price before work starts and a written guarantee before we leave.
• Call (254) 566-3573 and a live person answers, 24/7.

Which Tamko Models This Applies To

Tamko’s underlayment line spans their synthetic products (Apex, Elite, and the TW Series) plus traditional felt options like the No. 15 and No. 30 asphalt-saturated variants, and the decking beneath is almost always CDX plywood or OSB that Tamko’s installation instructions require to be dry, clean, and fastened at 6-inch intervals on edges and 12 inches in the field. The compatibility gotcha most Houston homeowners hit is this: Tamko synthetic underlayments require specific fasteners, plastic cap nails or cap staples, and plain roofing nails will tear through them in high wind. If a previous crew used standard nails, the underlayment has probably been flapping and failing since the first storm season.

On the decking side, the common Houston failure is OSB that’s been wet too many times. Once the edges swell and the surface delaminates, shingles won’t hold. We carry 1/2-inch and 5/8-inch CDX plywood and OSB to match what’s already on the roof. For the underlayment itself, we use Tamko products when the warranty matters, and we also stock quality equivalents from GAF, Owens Corning, and CertainTeed when a homeowner wants a different price point or a specific spec. Tilehurst Roofing Houston is an independent service provider and not affiliated with Tamko, but our crews are trained on their installation requirements and we honor the manufacturer’s fastener and overlap specs on every job.

Signs Your Tamko Underlayment & Deck Repair Is Failing

• Water stains on ceilings or walls below the eave line. This usually means the underlayment has torn near the drip edge or wasn’t lapped correctly, and water is running under the shingles instead of over them.
• Visible ripples or bubbles under the shingle courses. Heat in Houston can cause synthetic underlayment to wrinkle if it was installed too tight, and those ridges telegraph through the shingles and eventually split them.
• A soft, spongy feel when walking the roof. That’s decking rot, common where valleys or penetrations leaked long enough to saturate the plywood or OSB.
• Granules collecting in gutters faster than normal. When the deck shifts or sags beneath the shingles, the shingles flex more than they should, shedding granules and cracking along the flex line.
• Daylight visible through attic soffit vents at the roofline. In extreme cases, failed underlayment and rotted decking expose the attic to the outside, and you can literally see gaps where the roof should close tight.

Replacement Cost & What’s Included

For Houston homeowners, underlayment replacement alone runs roughly $450 – $900 for a typical single-story roof section up to about 1,000 square feet. Deck repair adds $75 – $110 per sheet of plywood or OSB replaced, and most partial deck repairs involve 2 – 8 sheets. A full redeck on a mid-size Houston ranch runs $2,200 – $4,000. The range moves on three things: how steep and cut-up the roof is, whether the old underlayment tears out cleanly or fights us, and how much decking actually needs to come out once we open the section up.

Every quote is written, line-itemed, and handed to you before a single nail is driven. That price includes removal and disposal of the old underlayment, any decking replacement, the new Tamko-compatible underlayment installed to spec, and a written guarantee on the repair. Greg walks the job himself and explains exactly what the estimate means. If the repair fails inside the guarantee period, we return at no charge, that’s the 365-Day Done Right Promise.

DIY or Call Us?

What you can safely do from the ground: look for missing shingles, check gutters for excessive granules, and note any interior water stains after a hard Houston rain. Those observations help us diagnose the problem faster. What you should not do is peel back shingles to inspect the underlayment yourself. A torn underlayment left exposed, even for one afternoon, can cost you a deck replacement that could have been avoided, and walking a roof with suspect decking puts you one soft spot away from a fall through the sheathing and into the attic.

If you suspect your Tamko underlayment or decking is failing, call (254) 566-3573. We’ll come out, inspect it properly, and hand you a written price. No charge for the estimate, no pressure, no surprise numbers at the door.

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