Weather and applicator sensitive during application.
May not require penetration of the structural component.
Adhesives are applied as either contact (single-side) or bonding (double-side) applications using water, solvent, urethane or asphaltic based compounds. Adhered Roofing SystemsĪdhered roofing systems use adhesives to “completely” bond the felt or membrane to suitable substrata which have been bonded or attached to the structural component. Learn more about Mechanically Attached roofing systems here.
Potential for “flutter” in the roof system.
Penetration of the structural component.
Surface exposed to allow for ease of repair and cleaning.
A steel or plastic plate is used to distribute the strength of the fastener over a broader area. Simply stated, mechanical attachment refers to the use of galvanized steel, stainless steel, polymer, or aluminum nails or screws to attach the paper, felts, or membrane directly to or through the structural decking. Learn more about Ballast roofing systems here.
Sharp corners and roof traffic can cause damage to the roof surface.
Non-combustible (may exclude Garden Roofs).
Today’s ballast remains primarily gravel and stone, but also includes concrete and polymer paver blocks, garden roofs and other multi-purpose components. These items, along with gravel and stones, are subsequently used to ballast rags, paper, felts and membranes on a roof. Ballastīallast, as defined by Wikipedia, is a “material that is used to provide stability to a vehicle or structure.” The use of ballast is the original method of waterproofing, and utilizes dirt, sod, palm leaves and other natural materials to shed water. Below, you will find an overview of five roofing system attachment methods and the associated pros and cons. In order to determine the best attachment method for your roofing project, its crucial to first understand the positives and negatives of each method.