Roof Talk 101
Why Are You “Hot Air Welding” My Roof" ?
By Craig Foster
There are many different types of roofing and applications
for all types of roofing designs and requirements. Some application methods
have been around for centuries while others have been around a relatively short
time say 50 years or less. Let’s explore a newer application method in the
commercial roofing industry called “hot air welding”.
This method is used
exclusively with single-ply membranes. Typically roof membranes have been
bonded or attached together with adhesives, tapes, or asphalts.” But this newer
technology called “hot air welding” has evolved over the last 50 years. It has
revolutionized the roofing membrane industry. Hot air welding utilizes “hot
air” to bond a thermoplastic membrane commonly known as TPO or PVC together
creating a true monolithic roof membrane. The welding literally fuses the
membrane together where it over laps and/or transitions together.
This process
has created the opportunity to install a roofing system that is adhesive,
asphalt, and seam tape free. The hot air welder does not utilize an open flame
as some application methods require; is relatively easy to use; and uses only
air…no gases, fumes, or vapors. Additionally, this type of application is very
repair and/or maintenance friendly. 
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