Brush-applied sealant, usually with reinforcing mesh, for accessible duct joints.
The durable, lower-cost sealing method for joints that can physically be reached. Applied with mesh at seams, boots and plenum connections, and used with closure systems listed for duct sealing. Its only real limitation is access — it cannot seal a joint inside a wall, so on systems with concealed leakage it is not a complete answer on its own.
We work on mastic every week across DFW. CSIA-certified, written quotes, financing available.
Flat fee confirmed when you book. Same-week scheduling. A pass/fail verdict within 48 hours.
Water intrusion in the ducts, a musty smell that won't quit, or vermin in the system? We answer 7 AM to midnight and every visit ends with camera photos and a written verdict — including a straight "your ducts are fine" when that's what we find. After-hours dispatch runs subject to crew availability.
Emergency line