Modified Bitumen Roofing

Decking Recommendations for Built-Up Roofing and Modified Bitumen Membranes

Introduction The Asphalt Roofing Manufacturers Association (ARMA) recommends that the structural roof deck meet certain minimum requirements to be an acceptable substrate for the specified roofing system. Generally, all decks should be clean, dry, and securely fastened to the building structure with no abrupt level changes exceeding

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The Effects of Ponding Water

Ponding water can have major negative consequences, regardless of the type of roofing system. Proper design, installation and maintenance of roofing structures can prevent this condition and its associated problems. Ponding water is defined as the water which remains on a roof 48 hours or longer. The

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Photovoltaic Systems and Low-slope Commercial Roofs

Introduction The push toward sustainable building practices has led design professionals to look at roofs as more than just the waterproofing element. They view the roof as space for renewable energy sources such as photovoltaic (PV) systems. While PV systems can offer benefits to both the environment

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Self-Adhesive Modified Bituminous Roofing Membranes

Modified bituminous roof membranes continue to be popular option for low-sloped roofs due to their proven performance. Historically these products have been torch-applied, mop-applied using hot asphalt (SBS only), or applied with solvent-based adhesives. Self-adhesive membranes combine the performance of proven modified bituminous waterproofing compounds with a

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Water Soluble Residue from Asphalt Roofing Products (“Tobacco Juicing”)

Describes origin of tobacco juicing and the effects this residue may have on modified bitumen roofs. Provides ways to minimize/eliminate residue runoff. The formation of a “tobacco-juice” residue, so named for its color, is the normal result of the weathering of all asphalt-based products (i.e., roof coatings,

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Cold Weather Application Recommendations for Modified Bitumen Roofing

Overview of proper storage, handling and application methods in cold temperatures. Contains information for both torch-applied and hot asphalt-applied products. Introduction The application of all roofing systems during cold weather poses special concerns. Specific to modified bitumen materials, these concerns may include: maintaining proper asphalt, adhesive, and

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The Effects of Greases, Oils and Chemicals on Modified Bitumen Sheet Materials

Breaks special contaminants into three categories: oils/greases, bacteria/fungi and other chemicals. Adverse effects are highlighted for each category. Includes methods for preventing roof contaminants. Introduction Roofing systems are intended to provide protection from natural elements such as rain, snow, hail, sleet, etc. Systems that are properly designed,

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Effects of Roof Color and Solar Reflectance on the Accumulation of Moisture in Roof Systems

Introduction: Moisture content within a roofing assembly may fluctuate significantly over the life of the roof depending on a variety of factors including, but not limited to: moisture in the existing roof assembly at time of installation; interior and exterior temperatures; interior and exterior humidity conditions; deck

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ARMA Lightweight Structural Concrete Roof Decks Statement

Decks may not be suitable for durable, sustainable roofing systems The roofing industry is increasingly experiencing roof system performance issues when roof systems are installed over lightweight structural concrete roof decks. The high moisture content of these decks, coupled with long drying times and an inability to

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VOC Considerations for Asphalt Roofing

Asphalt Roofs Can Meet VOC Requirements While volatile organic compound (VOC) regulations have tightened over the years, asphalt roofing products have kept pace. Asphalt roofing products and the coatings and adhesives used in the installation and maintenance of these roof systems continue to provide long-term performance on

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Contact ARMA

Asphalt Roofing Manufacturers Association
529 14th Street, NW
Washington, DC 20045
Tel: (202) 591-2450
Fax: (202) 591-2445

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