Duct Sealing and Insulation
Ducts in a crawl space can leak conditioned air and drip with condensation when they are cold and the space is humid. We seal joints with mastic, replace damaged runs, add support and wrap the ducts with insulation, which keeps the air you paid for in the ducts and off the dirt.
- SealsJoints and connections with mastic
- SupportsStraps and hangers
- WrapsInsulation sleeves
- FixesSagging or torn flex duct
What is included
- 1Less wasted airConditioned air reaches the rooms.
- 2No more sweatingInsulation stops condensation.
- 3Better supportDucts stop sagging on the ground.
- 4Neat runsTidy and easy to inspect.
From the first call to a dry crawl space
Our partner experts repair and protect crawl spaces in cities across the country. Find yours below and ask for a free estimate.
- 1InspectWe trace the ducts and mark leaks.
- 2SealJoints are sealed with mastic.
- 3SupportHangers lift sagging runs.
- 4WrapInsulation covers the ducts.
Is this the right service for you?
- A home with uneven heating or cooling
- Ducts lying on the crawl space floor
- Condensation dripping from ducts
- A house with high energy use
Common questions
How do I know my ducts leak?
Uneven rooms, dusty vents and high bills are clues. We inspect to find out.
Will sealing help my comfort?
Often yes, because more air reaches the rooms. We do not promise a figure.
Do you replace HVAC equipment?
No. We handle ducts in the crawl space and coordinate with your HVAC company.
Services that pair with this one
Pipe Insulation and Freeze ProtectionWrap and protect water lines so cold snaps do not burst pipes under your house.See the service 
Energy Efficiency UpgradesCrawl space fixes that cut drafts, steady your floors and reduce wasted energy.See the service 
Crawl Space Air Sealing and ConditioningSeal the leaks at the rim and the floor, then control the air in the space on purpose.See the service Find your city
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Find out what is under your house.
Call or text, or send the form for your free estimate. Tell us what you notice, from smells and cold floors to water and sagging.