What is Roof Mastic?

Roof mastic is a roofing product used to seal a roof so water cannot penetrate. Several different kinds of products are referred to as mastic; generally speaking, roof mastics are sticky, drying to a flexible, rubbery finish after they are applied and allowed to cure.

Many hardware stores carry these products and they can also be ordered by special arrangement. When people are arranging for the replacement or repair of a roof by professionals, they can ask about what products will be used.

Types of Roof Mastic

One form of roof mastic is a sealer or cement that is used on any area of the roof where water infiltration could occur, such as along the edges of the flashing, at seams and corners, and over nails and screws. It can come in buckets, allowing people to apply it with a palette knife, or in tubes that can be fitted into a caulking gun. When people inspect roofs periodically, it is important to check the areas where mastic has been applied to confirm that it is not pulling away, cracking, or flaking.

Another type of roof mastic is a roof sealant that is designed to be applied to the entire roof, usually in several coats. It can be used to extend the life of a roof by waterproofing it. Mastic can be applied with rollers, sprayers, and other devices. It essentially creates a membrane over the existing roof that resists water penetration and protects the underlying structure. If a roof is badly damaged, mastic cannot repair it, but an aging roof may be coaxed into performing for several more years with a coat of mastic.

ARC’s® roof coatings are formulated to provide maximum water resistance

a highly reflective roof surface, and maximum UV protection. With the development of the Styrene Ethylbutlyene Styrene (SEBS) reflective roof coatings, a product emerged that not only withstands ponding water, but also provides high reflectivity and prevents damage by solar ultraviolet radiation.

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ARC Roof Coatings®

APPLICATIONS

  • APP membranes
  • SBS membranes
  • Built-up roof membranes
  • EPDM or HYPALON roofs
  • Metal roofs
  • Concrete, concrete block, brick or stucco surfaces for waterproofing.
ARC Reflective Roof Coatings®

FEATURES

  • Elongation properties of 600%
  • Tensile strength of 1000% psi
  • Water absorption rate of 0.004%

CUSTOMER REVIEWS

When my team made the switch to the ARC® lineup of products we noticed productivity go way up. Thier roof coating process is just so efficient. It made all the difference.

James CarlsonDallas, Texas

The quality of the ARC® roof coatings was way above the industry standard. We have used several different roof coating solutions and the ARC® stuff is just plain better than the others. Surprisingly cost effective too. I would highly recommend.

Steven GibbonsChicago, IL.
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