Florida Roofing Magazine - April 2022

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Predictable outcomes are the result of products, process and people. Crews finish jobs safely and more effectively when education comes first.

South Florida, especially for homes and structures built near the coastline. In other parts of Central and North Florida, a one-component adhesive can deliver suitable holding strength for less installed cost. MiamiDade ordinances and the Florida Building Code govern most of the state; however, variations exist across municipalities. Always consult local wind uplift resistance requirements and product values before work begins.

Training is Important for Installers

Adhesives may seem a simple and straightforward method for adhering roof tile but do not assume an untrained person can do the job. It is important to be trained and qualified to perform the correct application method. Many adhesive manufacturers offer rooftop training to their customers where a qualified specialist provides instruction or shadows crews while they become accustomed to the product and applicator tool. Many one-component adhesives use a beading method applied to different areas of the tile depending on its profile, while two-component systems produce a paddy under the tile that can vary in size. Bead and paddy placement and volume can significantly impact adhesive performance and durability. Proper training is paramount to avoiding costly mistakes and rework.

Take Your Adhesive’s Temperature

Before applying, make sure the temperature of the adhesive you are using is within an acceptable range determined by the manufacturer. Generally, a one-component adhesive should read 65 to 95°F or 70 to 90°F for most two-component adhesives. Extreme high or low temperatures can compromise adhesive performance, so be mindful of weather conditions, keep products correctly stored away until they are needed. Use an infrared sensor to determine the temperature of adhesive cylinders.

Safety Never Takes a Day Off

Manufacturer safety protocols for adhesives should be strictly followed in all cases. This tends to include the donning of long-sleeved shirts, professional nitrile gloves and safety glasses. Roof tile adhesives are formulated for incredible lasting strength – removing adhesives from the skin or fingernails can be surprisingly difficult compared to common household “super” glues. Crews should only work in outdoor or wellventilated areas and everyone performing work on the job site should be educated about proper storage, handling, application and safety for the adhesive being used. There are other considerations for contractors to keep in mind when using adhesives to adhere clay and concrete roof tile. Often, it is a methodical approach to detail that determines the success of a project. When looking at the bigger picture, don’t forget these small steps: ■ Always verify that the adhesive manufacturer has evaluated its product for use with the approved underlayment. Assuming a product will give excellent adhesion to the primary roofing surface is risky as material and chemical compositions can vary greatly from job to job. ■ Always clean applicator tools and dispensers immediately after use to prevent nozzles from clogging. Adhesives can harden in minutes, ruining a perfectly good spray tip. Hoses should also be purged every two to three days to prevent adhesives from curing. ■ A simple conversation can save time and money. Adhesive manufacturers constantly strive to help contractors improve their performance, be it a stronger bonding formulation, faster application method or improved bead control. Knowing the latest products and techniques can translate to hours and dollars saved. Continued on page 37 www.floridaroof.com | FLORIDA ROOFING

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