Ul 90 Roof Rating

Furthermore the roofing designer or specifier sometimes assumes if there is a design wind speed requirement of 90 mph then the roof system must have a 1 90 rating which is not always true at least not for the reason they think maybe for tall buildings or if other factors exist.

Ul 90 roof rating.

Class 1 is rated at 1 90 the default standard for roof system not located in a coastal or high wind area. 30 class 60 and class 90 tests. Any epdm tpo hypalon pvc tpa modified bitumen or cpe single ply membrane system mechanically fastened or fully adhered non insulated or insulated. Bermuda roof panel construction no.

Class 1 roof panels are rated at 1 90. Morin corp seams may be 45 90 or 180. The ratings are stated as 1 60 1 90 1 120 and so on referring to wind pressure in pounds per square foot psf. Acryshield 1 to 6 gal sq.

Ul 1897 roofing systems uplift resistance certifications. To be tested in accordance with ul 580. Fm global states their panel ratings as 1 60 1 90 1 120 and so on. A safety factor of 2 means the maximum allowable design load is 45 psf.

This rating is used to apply a classification to roof panels. The ul 580 test method provides a. This test is to evaluate comparative resistance of roof assemblies to simulated load which correspond to wind velocities of 100 174 mph. Standard 580 tests for wind uplift resistance of roof assemblies.

The resulting rating is used to apply a classification to the roof panels. Classification a b or c and maximum 2 in incline for membrane manufacturer s insulated or non insulated roofing. Ul 580 roof deck. Spread of flame ul 790 burning brand testing ul 790 impact test ul 2218 intermittent flame testing ul 790 solar reflectance thermal emittance coating thickness astm c1549 and c1371 wind resistance astm d3161 wind uplift ul 1897 10x10 and 12x24 deck wind uplift ul 580.

Metal roof deck panels no. 405 tgkx 405 download plywood deck cee lock construction no. 238 uplift class 90 fire not investigated reinforcements used 1. Ul 90 wind uplift ratings n a.

Metal roofing systems inc mrs system 2500 2. Roofing bearing the ul classification mark. Ul standard ul 580 edition 5 standard for tests for uplift resistance of roof assemblies edition date. 60 and 90 ratings established for roof deck constructions by ul 580 testing.

This test evaluates the roof deck its attachments to supports and roof covering materials only. The second number denotes the wind pressure in pounds per square foot.