Roofing Manufacturers
On a Tuscaloosa, AL roof, the manufacturer name usually turns up as a stamp on a core sample, a line in a closeout binder or a label on a rooftop curb, and what a superintendent needs from it is the system type: what the sheet is made of, how it is joined, how it is attached and what the insulation underneath is. A thermoplastic sheet, a cured rubber sheet, a bituminous ply and a liquid coating each ask for a different repair, so the superintendent reads the layers before choosing the method.
More About Roofing Manufacturers
Single-ply makers
Single-ply sheets from Carlisle SynTec, Sika Sarnafil, Versico and Duro-Last are joined by heat welding or adhesive and held down by fasteners, adhesive or ballast. Repairs follow the sheet chemistry, so a thermoplastic seam is welded and a cured rubber lap is taped or glued.
On a single-ply roof over a warehouse in the Airport Industrial Park or a retail box along McFarland Boulevard, the first item on a walk is the seam, because a seam that tests tight today is the cheapest line on tomorrow's punch list. We probe seams, check flashing terminations at rooftop unit curbs and photograph each repair so the next visit starts from a known state.
Broad-line makers
GAF, Johns Manville, Holcim Elevate and Soprema supply a range of commercial membrane, insulation and accessory systems, and the roof in front of us may combine components from more than one of them after years of repairs. A core cut and a read of the layers show whether a roof is a single-ply assembly, a bituminous one or a hybrid of both.
Wind and attachment
Whatever the label, wind-uplift performance comes from the attachment pattern, the perimeter enhancement and the edge metal. After the April 27, 2011 tornado that crossed 35th Street and McFarland Boulevard, those details have become the first items on every walk, and fastener pull tests are used to check them in the field.
Paperwork and the building file
Warranty paperwork, submittals and closeout documents belong in the building file next to the photos and readings. A warranty management routine keeps those records current so that repairs are logged by date and method, and a later reroof starts with facts instead of memory.
Commercial Roofing Questions
Does a manufacturer name tell you the roof type?
Not always, since most makers sell several system types. The sheet, seams and attachment are confirmed on the roof.
Do repairs affect an existing warranty?
They can. Terms vary, so repairs are logged and the paperwork is reviewed before work begins.
Can you repair a roof from any of these makers?
Yes, using methods and materials suited to the sheet type found on the roof.
What if the original submittals are lost?
A core cut and a field review identify the layers, and the findings start a fresh file.
Send the building list
Send the building list and last roof report, and a superintendent will walk the highest-risk sections first and return a ranked condition summary.