location_on Serving Allen & All of Collin County
verified Locally Owned & Operated
★★★★★ 4.9 Google Reviews
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(972) 521-7225
Flashing is the metal seal between your chimney and roof. When it fails, water runs down the chimney and into your attic, walls, and ceiling. Flashing leaks are the most common chimney-related water damage issue we see in Allen homes — and one of the easiest to fix when caught early. Call (972) 521-7225 for a free inspection.
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Flashing Repair — Starting at $200
In Allen, the most common flashing failures come from three causes. First, sealant failure — the caulk or mortar holding the counter flashing deteriorates from UV and heat cycling. Second, thermal expansion — metal flashing expands in Allen’s 100°F+ summers and contracts in winter, working itself loose. Third, improper installation — many Allen homes built in the 2000s had flashing sealed with tar or caulk instead of properly embedded in mortar joints.
Flashing repair is one of the most cost-effective chimney services. Catching a flashing leak early ($200–$600 repair) prevents thousands in ceiling, drywall, insulation, and framing damage. We pair flashing repair with crown repair and waterproofing for complete water protection.
Not all chimney leaks come from the flashing. Water can also enter through a cracked crown, deteriorated mortar joints, or a missing chimney cap. We diagnose the exact source before recommending repair.
Spot repair (resealing, re-embedding a section): $200–$600. Full reflashing (remove and install new): $400–$1,200 depending on chimney size and roof pitch. We quote exact pricing after roof-level inspection.
Flashing leaks typically show up as stains on the ceiling or walls near where the chimney meets the roof. Crown or masonry leaks tend to show up as water inside the firebox or stains on the chimney breast inside the house. We diagnose the exact source with a roof-level inspection.
Roofers handle the roof side (step flashing woven into shingles), but the chimney side (counter flashing embedded in mortar joints) requires masonry skills. Many flashing failures we fix were caused by roofers who sealed counter flashing with caulk instead of properly embedding it in mortar. We handle both sides.
Properly installed aluminum or galvanized flashing lasts 20–30 years. Copper flashing lasts indefinitely. The sealant and mortar embedding typically needs attention every 10–15 years. When we install new flashing, we use high-quality materials designed for Allen’s climate extremes.
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