Ul 90 Roof

Ul 580 lists roof assemblies as class 30 60 or 90 meaning that they are designed and engineered to withstand continuous wind speeds of 30 60 or 90 pounds per square foot.

Ul 90 roof.

Metal roofing systems inc mrs system 2500 2. Ul 90 wind uplift ratings. November 02 2006 ansi approved. Ul with regard to wind uplift.

The test evaluates the roof deck or the roof deck assembly. Bermuda roof panel construction no. Roofing bearing the ul classification mark. Some metal roof systems have been investigated and listed by underwriters laboratories inc.

30 class 60 and class 90 tests. Ul standard ul 580 edition 5 standard for tests for uplift resistance of roof assemblies edition date. 405 tgkx 405 download plywood deck cee lock construction no. How does ul 90 relate to wind speed in real world situations.

This test evaluates the roof deck its attachments to supports and roof covering materials only. To be tested in accordance with ul 580. This test is to evaluate comparative resistance of roof assemblies to simulated load which correspond to wind velocities of 100 174 mph. Metal roof deck panels no.

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. 238 uplift class 90 fire not investigated reinforcements used 1. It also serves as a key differentiator for products within the roofing market. For morin corp seams may be 45 90 or 180.

Comment with your question to have it answered in a future episode. Ul 580 roof deck construction certifications roof deck constructions classified for uplift. Standard 580 tests for wind uplift resistance of roof assemblies.