With superior strength and spanning capability, Fabral Powerseam II is a high-performance, mechanically seamed standing seam roofing system. With 180 degree machine seaming, field rollforming and the ability to curve to a minimum 10’ radius, Powerseam II delivers performance and value to education, athletic and industrial projects. Shadow lines and stiffening ribs available

Test data

Air InfiltrationASTM E2830.01 cfm/ft2 @ 15 psf
ASTM E1680<0.01 cfm/ft2 @ 1.57 psf
Water PenetrationASTM E331No water leakage @ 6.24 psf
ASTM E1646No water leakage @ 2.86 psf
ASTM E2140No leakage of standing water
Wind UpliftASTM E1592Test results vary depending on gauge and panel thickness
UL580Class 90

PowerSeam Wind Uplift Loads (PSF) Double Lock

SubstrateWidthSpans2′-0″2′-6″3′-0″ 3′-6″4′-0″4′-6″5′-0″
24 ga. Steel16” 3+102928273635344