Spark Arrestor Installation in San Marcos, TX

NFPA 211 is specific: the arrestor's openings must not allow a sphere larger than 1/2 inch to pass, and must not block a sphere smaller than 3/8 inch. That window keeps the screen tight enough to catch embers while still letting the chimney breathe. A screen with oversized holes lets sparks escape onto the roof; one that's too fine clogs with soot and chokes draft. We install arrestors built to that 3/8-to-1/2-inch standard rather than generic hardware cloth.

Only if it's the wrong screen or it's left dirty. NFPA 211 requires the arrestor to have a net free area at least three times the chimney outlet, specifically so it doesn't strangle the flow of gases. A properly sized arrestor maintains draft; the real risk is neglect — soot and creosote accumulating on the mesh can blind it over a season. We size to that 3x rule and recommend the screen be checked at your annual inspection so it stays open.

For chimneys serving solid-fuel appliances, a spark arrestor is required under NFPA 211, and many local fire codes mandate them outright — particularly in wildfire-prone and wildland-urban-interface areas where an escaping ember can ignite a roof or brush. Beyond code, it's simply sound fire practice. We install corrosion- and heat-resistant arrestors that meet the material and opening requirements, because a rusted or undersized screen defeats the purpose it was put there for.

Yes, and it usually should be. Many quality caps integrate a code-compliant arrestor screen, so a single component sheds rain off the flue, blocks animals, and arrests sparks at once. The key is that the integrated screen still meets the 3/8-to-1/2-inch opening rule and the 3x net-free-area requirement — some decorative caps don't. We verify the arrestor specification on any combined cap so you get genuine ember protection, not just a lid.

Yes — our crews cover San Marcos's 4 ZIP codes across Hays County, including Texas State / The Square, Blanco Vista, Kissing Tree, plus the surrounding communities.

We offer same-week scheduling across San Marcos, booked by a real person in under two minutes, 7 AM to midnight every day.

San Marcos blends older housing near Texas State and The Square with new Kissing Tree and Blanco Vista construction in Hays County, and the older rental-heavy inventory drives much of our inspection demand. Tenant-occupied masonry fireplaces near campus often go years without service, so we lead with NFPA 211 Level 2 scoping for liner damage and creosote that deferred maintenance leaves behind. Willow Creek's established homes commonly present aging flues overdue for documentation. Spark Arrestor Installation is part of keeping that local housing stock safe, efficient, and up to code.