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Roofing/SBS Torchdown Underlayment


Santi wrote at 2014-05-17 04:40:51
If you are doing a torch down roof , use base sheet underlayment nailed down with metal cap nails minimum @ 16" on center with 3" overlap on horizontal joins and 6" on vertical joins , use 9" mini roll around the perimeter then drip edge or low rise metal depends on the draining system , target all roof flashings  and one layer of granulated torch down  mat.  


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Brad Zacharia


All aspects of residential Roofing. This includes shingles and flat (low slope) roofs. I have knowledge in the installation as well as the design of roofs from an engineering standpoint.


I have been doing roofing for 40 years. This was my father's business and I took it over in 1980.

I have written responses to artcles that I felt needed a response to and those responses have been published in roofing trade magazines.

BSEE Drexel University

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