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Asphalt Roof Restoration using the PremiumCoat System

Commons Problems:

Alligatoring & Seam Failure
Cracking of the roof substrate, creating a pattern similar to an alligator's skin
Weathering
Breaking down of the roof - caused by UV rays and thermal expansion/contraction.
Roof Temperatures
Dark colored roofs tend to store and build up extreme heat, reaching 180 or more.

What is a Built Up roof (BUR)?

A Built Up roof (BUR) is composed of layers of reinforcing felt between asphalt or coal tar. The asphalt or coal tar is heated in a kettle or tanker until it liquifies and then is applied by mop or mechanical spreader. Asphalt is a petroleum product refined from crude oil; coal tar is derived from the distillation of coal. If the asphalt is heated to an improper temperature, blistering and slipping of felts can occur, accelerating the aging of the roof system. Overheating asphalt can result in burns and fires in the kettle and on the roof.

What is Modified Bitumen?

A Mod Bit roof is a hybrid BUR that typically comes in rolled sheets. The sheets are either hot-mopped (using heated asphalt) or torch-applied to the roof. If the seams are inadequately heated, voids and blisters can result. Over time, weak seams and flashing details age and crack, causing leaks.

The surface of the applied sheet is often granulated. Before applying the PremiumCoat System, it is recommended that loose granules are swept or powerwashed off; the remaining granules can then be "locked down" with UniBase primer.

How can the PremiumCoat System help a Smooth Built Up or Mod Bit Roof?

Traditional asphalt-based roofing weathers from the bottom-up. The oils leach from the asphalt, leaving a dry, brittle substrate. As a result, the roof is less flexible and less able to expand/contract with the building as it heats/cools throughout the day.

Dark colored asphalt-based roofs heat up quickly and can reach temperatures of over 180 degrees F. If an afternoon thundershower appears, the rain rapidly cools the roof surface. The asphaltic roof surface doesn't handle this drastic temperature change well, resulting in thermal shock causing cracks and premature weathering.

As a Smooth BUR weathers, it cracks - resulting in leaks.

As the Mod Bit seams become weathered and brittle, they begin to pull apart from one another, causing leaks.

Traditional asphaltic roofing was DESIGNED to be torn off and replaced. PremiumCoat can extend that roof's life cycle by protecting it from the #1 threat: the sun. A seamless roof coating system is a cost effective solution to the roof tear off / reroofing cycle.

PremiumCoat is a reinforced acrylic roofing SYSTEM. As an acrylic, it remains permanently flexible. Since PremiumCoat is fluid-applied, it is directly attached to the roof: every nook and cranny. No need for flashing accesories - PremiumCoat fully encapsulates all roof details, making them part of the seamless roof system.

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