Whole-system duct and dryer vent check with before-and-after photos - you see exactly what came out of your vents
That "$99 whole-house special" is a bait ad - the real number appears once they are in your hallway, or the "clean" is a shop-vac at the register. We photograph the inside of your ducts before and after instead.
Before
After
Before
After
Before
AfterFast, Reliable Duct Repair & Sealing Across Friendswood
Duct repair and sealing in Friendswood typically costs $280-$650 for standard flex duct repairs and $180-$420 for mastic sealing of metal duct connections. Most jobs are completed in a single visit, with written pricing delivered before any work begins. Call (346) 251-8919 for a free estimate.
We’ve been dispatching crews to Friendswood from our Houston office since 2013, and we’ve learned that ductwork here isn’t like ductwork in other Houston suburbs. The combination of aging 1980s tract-home flex systems, Gulf Coast humidity that pushes dew points above 75°F for months straight, and the specific flood footprint of Hurricane Harvey and Tropical Storm Imelda means technicians here encounter conditions we simply don’t see in Pearland or Pasadena. When a Friendswood homeowner calls us, we start by asking about water history before we ask about symptoms. That’s not standard practice everywhere. It is here.
Why CleanRun Air Duct Cleaning Houston Is Friendswood’s Preferred Duct Repair & Sealing Company
Our reputation in Friendswood was built on documentation, not discounts. Homeowners here research before they call, and they stay because we show them what we found rather than telling them what to believe. The 52,000+ homes we’ve served since 2013 include hundreds in Friendswood subdivisions from Wilderness Trails to Wedgewood Village, and our review pattern reflects a specific customer: people who wanted evidence, got it, and wrote about it afterward.
We coordinate dispatch and scheduling from our Houston office, but crews serving Friendswood are routed daily to this market. Response time to Friendswood is typically same-week, with most repair and sealing jobs scheduled within 3-5 business days. We don’t do urgency theatre. We do scheduled, documented work with a written price agreed before the first panel comes off.
Local knowledge matters because Friendswood’s housing stock is genuinely different. The late-1970s through 1990s tract homes that dominate this market use flex duct systems now 30-45 years old, and the post-Harvey reconstruction created a patchwork where original aging ductwork sits alongside newer post-remediation systems. Our technicians encounter highly variable conditions block to block, and they know to check for flood history before assuming anything about what’s in the attic.
Haven Standard Clause 3: Verified Crews means every technician is background-checked, uniformed, and identified by name before arrival. Tomas Reyes, who leads CleanRun, has held this standard since the company’s founding. No exceptions.
Our Duct Repair & Sealing Services in Friendswood
Duct Sealing
Sealing in Friendswood often starts with a moisture check. In subdivisions backing Clear Creek, we’ve found mastic sealant applied by previous contractors over still-damp connections from flood exposure. The seal fails within one cooling season once attic temperatures climb. Our Duct Repair & Sealing protocol includes moisture readings at every connection before any sealant touches the surface. We use Guardsman mastic sealant on verified-dry metal joints, with dated photos of the pre-condition, application, and post-cure inspection included in the standard job record.
Flex Duct Repair
Friendswood’s flex duct systems are aging out. The original 1980s runs sag between supports, disconnect at elbows, and tear where insulation wrap has degraded. In Harvey-affected homes, the problem is compounded: floodwater entered attic spaces and soffit cavities, saturating insulation-wrapped flex runs that many post-flood rebuilds never addressed. We repair flex duct by section, replacing compromised runs rather than patching over damage, and we document the internal bore condition with camera inspection before and after. A typical flex duct repair in Friendswood runs $320-$580 depending on linear footage and access difficulty.
Metal Duct Repair
Older Friendswood homes with galvanized steel ductwork present a different problem set. Rust at seams, separated longitudinal locks, and failed supports where hangers have corroded. Metal repair here requires sheet metal fabrication to match existing dimensions, sealed with mastic and mechanically fastened. We photograph every seam before disturbance and after repair, with the written scope specifying gauge and dimensions. Metal duct repair in Friendswood typically ranges $380-$720.
Duct Insulation
Insulation replacement is where Friendswood’s flood legacy becomes unavoidable. In creek-adjacent subdivisions, we’ve pulled insulation wraps that were still damp seven years after Harvey. Condensation on poorly insulated attic runs feeds whatever mold colonies remain from flood exposure, creating a cycle that cleaning alone won’t break. We install new R-6 or R-8 insulation on replaced flex sections, with vapor barrier orientation specified in the written scope. Full insulation replacement on an average Friendswood attic system runs $450-$890.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
BeforeAfterTrusted Brands We Service in Friendswood
Our equipment roster includes Rotobrush agitation systems, Nikro HEPA-filtered negative-pressure extractors, and Honeywell media filters for post-repair air quality verification. We don’t claim these brands make us better. We name them so Friendswood homeowners can look up specifications independently and verify what equipment will be in their attic before agreeing to a price. Parts for common Friendswood systems, including Aprilaire media cabinets and Guardsman sealant products, are stocked locally for repair jobs that can’t wait on shipping. Fast turnaround matters less than correct turnaround, but there’s no reason a prepared crew can’t deliver both.
Common Duct Repair & Sealing Problems We See in Friendswood Homes
- Post-flood flex duct left in place after Harvey or Imelda remediation. Contractors focused on walls and flooring often missed attic runs entirely. The insulation wrap holds moisture for years, and every cooling season’s condensation feeds mold colonies established in 2017 or 2019. We find this in Wilderness Trails, Wedgewood Village, and other creek-adjacent subdivisions.
- Mastic sealant applied over damp connections. A quick-fix approach in flooded homes: seal what looks intact, hope the attic dries out. It doesn’t. Attic temperatures in Friendswood peak above 140°F in summer, and moisture trapped under sealant turns to vapor that blisters and fails the bond. We remove failed sealant, dry the joint, and reapply with documented moisture readings.
- Sagging 1980s flex runs reconnected without camera inspection. The visible disconnection at the air handler gets fixed. The hidden disconnection twenty feet downstream, where the duct has pulled from a wye or collapsed between supports, pulls unfiltered attic air straight into the supply. In Friendswood’s humidity, that attic air carries mold spores and moisture directly into living spaces.
- Disconnected returns pulling flood-contaminated attic air. Return duct leaks are harder to detect than supply leaks because the system still “works.” But a return leak in a Harvey-affected attic pulls whatever contaminants remain in insulation and sheathing into the air handler, then distributes them through the entire home. Camera inspection finds these.
Pricing for Duct Repair & Sealing in Friendswood, TX
| Service | Friendswood Price Range |
|---|---|
| Mastic sealant application (metal joints, up to 10 connections) | $180-$340 |
| Flex duct section repair/replacement (per 25 ft. run) | $280-$520 |
| Full flex duct replacement, average attic system | $1,800-$3,400 |
| Duct insulation replacement (R-6/R-8) | $450-$890 |
| Metal duct fabrication and repair | $380-$720 |
| Camera inspection with written report and photos | $145-$220 |
These ranges reflect actual Friendswood jobs we’ve completed, not national averages adjusted for Texas. Cost drivers include attic access difficulty (steep pitch, limited scuttle size), extent of flood damage requiring section replacement versus spot repair, and whether the system requires full negative-pressure source removal before sealing work can begin. Every job receives one flat price per system, agreed in writing before work starts, under Haven Standard Clause 1. No per-vent pricing. No add-ons after arrival. Bring a competitor’s written estimate and we’ll provide a Free Second Opinion, our number next to theirs.
We Also Serve Cities Near Friendswood
CleanRun crews route regularly to Pearland, Pasadena, Deer Park, and Fresno from our Houston office. Each market has distinct housing stock and climate conditions, and our protocols adapt accordingly. Pearland’s newer construction sees different failure modes than Friendswood’s 1980s inventory. Pasadena’s industrial proximity creates particulate loading we don’t encounter here. The documentation standard doesn’t change.
Serving Friendswood, TX - Our Local Coverage Area
We’re based in the Friendswood area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Duct Repair & Sealing in Friendswood
Replacement is required when the flex duct insulation wrap has been saturated and the internal bore shows microbial growth that source removal cannot fully extract; cleaning is viable when moisture damage is limited to the exterior wrap and the inner core remains intact. We make this determination with a camera inspection and moisture readings, documented with dated photos. The critical factor is whether floodwater reached the interior duct surface, not just whether the attic got wet. Call (346) 251-8919 and we’ll inspect at no charge, with the written scope specifying cleaning or replacement before any work begins.
Post-flood remediation in Friendswood typically focused on visible living-space damage: drywall, flooring, cabinetry. Attic flex duct runs, especially in subdivisions backing Clear Creek, were often outside the remediation scope because they weren’t visibly damaged and contractors prioritized occupied spaces. The insulation wrap around these ducts can hold moisture for years, and the interior bore, never inspected, may harbor mold colonies that resurface every cooling season. We’ve documented this exact condition in homes where owners believed remediation was complete. Our camera inspection finds what visual remediation missed.
We deliver a Documented Photo Record on Every Visit: dated photos of every duct run interior before and after work, moisture readings at each connection, a written scope specifying materials and methods, and a narrative report suitable for insurer submission. At the Wilderness Trails job referenced above, this package was accepted as evidence that ductwork, not just drywall, had sustained flood damage. Haven Standard Clause 1 requires written pricing before work; the documentation package is included as a standard deliverable, not an add-on.
Friendswood’s location on the Gulf Coast plain produces summer dew points above 75°F and near-continuous AC operation from April through October. This sustained humidity causes condensation inside poorly insulated attic flex ducts, creating the moisture mold requires. In drier inland Texas cities, intermittent AC use and lower ambient humidity don’t produce the same condensation load. For Friendswood homes with additional moisture from flood-compromised insulation wraps, the acceleration is significant. Proper insulation replacement and sealed connections reduce but don’t eliminate this fundamental climate pressure.
Disconnection at a joint can often be reconnected and sealed if the duct material remains supple and the insulation wrap is intact; sagging between supports requires additional hanger installation but not necessarily replacement if the duct core hasn’t collapsed. Replacement is necessary when the wire helix has rusted through, the inner liner has torn, or the insulation wrap is saturated or degraded. We determine this with physical inspection and camera verification, not assumption. The written scope specifies which sections are repaired, which are replaced, and why, before any work starts.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning Houston, serving Friendswood since 2013.