Model # HE505571

Internet #100005608

Store SKU #201099

Henry 505 4.75 Gal. Flash Master Cement
0081725505704

Henry

505 4.75 Gal. Flash Master Cement

$49.97 /each

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Product Overview

The Henry 505 4.75 Gal. Flash Master cement is a long-lasting, high-quality, asphalt-based formulation. It is designed to be applied to dry surfaces when it is not raining. It is flexible and will not sag, making it ideal for sealing vertical as well as flat surfaces.

California residents: see   Proposition 65 information

  • Rubber-modified asphalt-based no-sag formula won't drip in vertical applications
  • Formulated for application under dry conditions only, waterproof when cured
  • Apply with roofing trowel, putty knife or caulk gun
  • 1 Gal. covers up to 12-1/2 sq. ft. to a 1/8 in. thickness
  • Seals leaks around chimneys, skylights and other roof openings as well as repairs shingles, roofing, flashing, splits, cracks and raised edges

Info & Guides

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Customer Questions & Answers

Can this be used to fix a leaky RV roof

Asked by: Bigens
Depends on the substrate. If it's metal, then yes. It it's EPDM rubber, then no. The safest bet would be to use our Henry 885 Tropi-Cool 100% Silicone Seam & Repair Roof Sealant or Henry 887 Tropi-Cool 100% Silicone Roof Coating. These work on most substrates and are great for RVs. For more info, check out www.henry.com or contact product support at 800-486-1278.
Answered by: Henry Company
Date published: 2016-03-02

Which product do you recommend on a barn roof that has old nail holes and cracks in the tin, some...

Which product do you recommend on a barn roof that has old nail holes and cracks in the tin, some 1/4 in.. I am trying to not replace the roof. I have 2400 sq. Ft to cover or seal.
Asked by: Bobo
The best product would be our Henry 887HS Tropi-Cool 100% Silicone Roof Coating. It reflects UV rays protecting roof and keeping barn cooler and also waterproofs while offering a Lifetime Warranty. For the bigger holes, you will want to first seal with our Henry 885 Tropi-Cool Seam & Roof Repair, then coat with Henry 887HS. Another option would be our Henry 869 Rubberized Aluminum Coating. It reflects UV rays (not as much as Henry 887HS) and is ponding water resistant while offering a 12 Year Warranty. For the bigger holes, you will need to seal them first with our Henry 209XR Extreme Rubberized Wet Patch, Henry 208R Rubberized Wet Patch, or Henry 505 Flashmaster, then coat with the Henry 869. For more info, check out www.henry.com or contact our product support at 800-486-1278. Thanks for putting your trust in the Henry Company and Home Depot.
Answered by: Henry Company
Date published: 2017-02-16

Does henry henry have a sealant for leaky basements

To seal a Crack in cinder blocks
Asked by: Peanut
We have a few different options for your basement. All of our options are recommended to be used to seal from the outside. If you're looking to seal and area of a wall or the whole wall, then I would say our best options would be Henry Blueskin WP200 Waterproofing Membrane, Henry Aqua-Bloc, or Henry 787 Elastomeric Fluid Applied Waterproofing Membrane. If your grade is good and water drains away from your house, then you could use a damp proofer like our Henry 101 Non-Fibered Foundation Coating. If you're just trying to seal cracks, then I would use our Henry 209XR Extreme Rubberized Wet Patch or Henry 208R Rubberized Wet Patch. The Henry 209XR has more rubber and works in lower temperatures than the Henry 208R. For more info, check out www.henry.com or contact our product support at 800-486-1278. Thanks for putting your trust in the Henry Company and Home Depot.
Answered by: Henry Company
Date published: 2017-01-19

would flashmaster be ok to reapply aggragate to roll roofing?

bought a home that has two sections of roll roof- seams were sealed a foot wide and it looks horrible. have got agg already(white silica sand)- just not sure what adhesive/sealant to use
Asked by: jayhawke
Jayhawke-We would recommend our 203 Rolled Roofing Adhesive. I have included a link below for you that contains more information. Thank you for putting your trust in the Henry Company and The Home Depot. http://us.henry.com/roofing/adhesives-and-primers/203-cold-ap-roof-and-lap-adhesive
Answered by: Henry Company
Date published: 2017-02-22
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Customer Reviews

505 4.75 Gal. Flash Master Cement is rated 5.0 out of 5 by 2.
Rated 5 out of 5 by from roof cement Easy to apply. Worked well. Recommend for roofing use.
Date published: 2015-10-27
Rated 5 out of 5 by from Great product Great product easy to use, not as easy to clean but not any different from competitors.
Date published: 2015-09-01
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