A Look at Single vs. Two-Component Roof Concrete and Clay Tile Adhesives
Tile roofs offer outstanding performance and durability as well as great curb appeal. They’re particularly popular in hurricane-prone Florida, where their ability to withstand storms and severe weather shines versus asphalt shingles. Experts report that a properly maintained tile roof can offer a 50-to-75-year lifespan depending on where they are installed.
One reason for their performance and longevity in certain markets is the use of modern adhesive technology instead of traditional mechanical fasteners like screws, nails, mortar sets, or wire tires. Adhesives, by contrast to these methods, strongly bond tiles in place. When properly installed by trained professionals, roofs utilizing adhesives can achieve some of the highest possible wind uplift ratings, making them highly advantageous for extreme weather locales in the United States.
But roof tile adhesives can be applied wherever there are concrete and clay tile roofs, elevating performance in any application. And in order to properly advocate for their more widespread use, adhesive professionals should be knowledgeable about the different types of roof tile adhesive options and how they can deliver outstanding performance. In this article, we’ll break down the key differences between single-component and two-component roof tile adhesive options, the importance of proper training for applicators, and the many advantages adhesives hold over mechanical fastening methods.
Polyurethane roof tile adhesives can be divided into two primary categories: single-component and two-component.
In single-component adhesive products, all chemical and raw material components are combined and the adhesive moisture cures upon dispensation. Two-component adhesives’ adhesion chemistry and other materials are kept separate (A-side/B-side); the chemical reaction begins once the two components are mixed together in the application assembly nozzle. These components are fed through hoses and are combined at the point of application.
While both single- and two-component adhesive options will provide high levels of performance, there are some key differences that may make one more suitable for a given application than the other.
Two-component polyurethane adhesives, for example, maintain the highest available levels of wind uplift performance. Third-party lab testing protocols and adhesive manufacturers’ code approvals show higher allowable overturning moment testing data for two-component systems. Depending on the paddy size, tile profile, paddy placement, and gram weight, a properly installed two component adhesive system has the ability to withstand a category five hurricane.
Source: Adhesives Magazine / APOC