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Water Based Mastic Half Gallon Tub

$1282
  • Creates air-tight seals on duct seams and joints
  • Meets or exceeds most energy codes
  • Fiber reinforced, water based, low odor
  • See More Details

Frequently Bought Together

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Price:
$1282

Product Overview

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.
  • Fiber-Reinforced
  • Weather Resistant
  • Non-Flammable
  • Low Odor
  • Earns LEED Credits
  • UL Listed

Info & Guides

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Water Based Mastic Half Gallon Tub
3 in. x 150 ft. Fiberglass Weave1/2 Gal. Water Base Duct Mastic Sealant
BrandMaster FlowMaster FlowSpeedi-Products
NameWater Based Mastic Half Gallon Tub3 in. x 150 ft. Fiberglass Weave1/2 Gal. Water Base Duct Mastic Sealant
Price
$1282
$1376
$2012
Ratings
(71)
(18)
(39)
View ProductView ProductView Product

Specifications

Dimensions

Product Depth (in.)
6
Product Height (in.)
5.25
Product Size (oz.)
64.2
Product Width (in.)
6

Details

Color
Cream
Full cure (hours)
20
Minimum Temperature (F)
38
Pack Size
1
Product Weight (lb.)
5.7
Returnable
90-Day

Warranty / Certifications

Manufacturer Warranty
Free from Manufacturer Defect at Time of Delivery.

Questions & Answers

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Customer Reviews

  • 3.9
    out of 71 reviews
  • 67% recommend this product
Filter by:
Showing 1-10 of 71 reviews
Best at what it does!
For nearly a hundred year old home with some pretty old duct work, we were heating and cooling our basement as opposed to the rest of the home. Duct tapes didn't hold up well and new air leaks would form sooner than expected. The mastic did a great job at durably holding up and sealing. Since it was an unfinished basement space, we weren't so concerned with the, shall we say, less than aesthetically pleasing final look.
by trd2d
    • Recommended Product
    12 people found this helpful
    Doesn't Compare To Good Mastic
    Very watery, bought it because the HVAC store was closed. Doesn't even compare to grade quality mastic. If you want to do the jod once, the right way, don't buy this product.
    by c754
      Rating provided by a verified purchaser...
      Rating provided by a verified purchaser
      by JOHN
      • Verified Purchase
      Went on easily ,dried hard....
      Went on easily ,dried hard.
      by MARK
      • Verified Purchase
      My air duct was leaking, I patched the leak and applied the sealant. I then let the area dry for ...
      My air duct was leaking, I patched the leak and applied the sealant. I then let the area dry for about 1 hour before turning on my AC. It has been about 3 weeks and the patch is holding.
      by br
      • Verified Purchase
      • Recommended Product
      Works great at sealing small cracks/joints in ducts, easy to apply with a regular paint brush. Me...
      Works great at sealing small cracks/joints in ducts, easy to apply with a regular paint brush. Meets expectations.
      by Steve
      • Verified Purchase
      • Recommended Product
      Rating provided by a verified purchaser...
      Rating provided by a verified purchaser
      by HomeDepotCustomer
      • Verified Purchase
      Good stuff...
      Good stuff
      by HomeDepotCustomer
      • Verified Purchase
      Rating provided by a verified purchaser...
      Rating provided by a verified purchaser
      by NoDeal
      • Verified Purchase
      Nice.
      Nice.
      by Will
      • Verified Purchase
      • Recommended Product
      Showing 1-10 of 71 reviews