- Creates air-tight seals on duct seams and joints
- Meets or exceeds most energy codes
- Fiber reinforced, water based, low odor
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Product Details
About This Product
Master Flow Water Based Air Duct Sealant helps seal all types of air ducts to reduce the risk of conditioned air leakage. Sealing air duct plenums, takeoffs, elbows, and vent boots where they connect and sealing the seams, per product instructions, may help save energy. The sealant is fiber reinforced and easy to apply by brush, gloved hand, or putty knife to flex duct, duct board, and sheet metal air ducts. It dries to a tough, flexible, and weather resistant seal. It adheres to many surfaces like: drywall, foam and fiberglass insulation, galvanized steel, aluminum, masonry, and wood. This product is also available in 10.5 oz. caulk tubes and half gallon tubs.
Highlights
- Don't know how much to order? A GAF QuickMeasure report provides all of the measurement data you need when planning your material orders. A complete bill of materials, with Home Depot product SKUs, is provided with each single-family report delivered in under 1 hour. Learn more here. [gaf.com [gaf.com]]
- Weather resistant
- Non-flammable
- Low odor
- Earns LEED credits
- UL listed
- Return Policy
Product Information
Specifications
Dimensions
Product Height (in.) | 5.625 in |
|---|---|
Product Size (oz.) | 117 |
Product Width (in.) | 7.875 in |
Details
Full cure (hours) | 20 |
|---|---|
Minimum Temperature (F) | 0 F |
Pack Size | 1 |
Product Weight (lb.) | 11 lb |
Returnable | 90-Day |
Warranty / Certifications
Manufacturer Warranty | Free from Manufacturer Defect at Time of Delivery |
|---|
Questions & Answers
How much area will one bucket cover?
Coverage can vary by application. Please see this link for more information: https://images.thdstatic.com/catalog/pdfImages/25/25f0d0bc-e775-4384-8970-12fde7e6a729.pdf
Is this product fire resistant
This product is not fire resistant.
Is this code compliant ?
While local codes can vary, it's best to check with your local authorities for specific requirements. This product is UL Listed: UL 181A-M and UL 181B-M: 28DF.
What color is this product
The mastic will dry to an off-white color. If you have any other questions about Master Flow products, please email MasterFlowTech@gaf.com
Can this be used inside the duct between the a/c coil enclosure and plenum on an A/C + furnace system?
Yes, under certain conditions it can - Per the application instructions, "Occupants, who are chemically sensitive, prone to allergic reactions, or have respiratory ailments of any kind, should not have mastics applied inside the air stream of their heating or cooling system without consulting their physician for approval. Do not exceed the service temperature limits of 0°f - 190°f.
Can this product be primed and then painted? I am using on ductwork that 'could' be subjected to rain/snow. Since it is rated as water 'resistant' and not 'waterproof', it seems painting would protect the product's seal-ability.
Yes it can, If you have any other inquiries about our Master Flow products please email
Is this safe to put on the inside of a return duct? It’s part of the floor joists and there is insulation on the sides I might not have to remove if I can put it on the inside. Would it leave a smell if I did that way?
The preferred method is to use it on the exterior of the duct. Be sure to adhere to the full recommended set time before turning on the unit. This will help reduce the odor. If you have any other inquiries about our Master Flow products, contact Technical Services at masterflowtech@gaf.com.
Is this natural rubber latex free?
Natural Latex.
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