This test determines the uplift resistance of roof assemblies consisting of the roof deck and roof covering materials by evaluating the comparative resistance of roof assemblies to positive and negative pressures.
Wind test to roofing.
Hrt employed a wind simulator figure 4 capable of producing wind speeds up to 175 mph and compliant with astm d3161 standard test method for wind resistance of steep slope roofing products fan induced method.
The negative pressure test utilizes a five foot by five foot dome that is placed over the roofing membrane surface.
The specific test that pertains to wind uplift utilizes a test apparatus designed by fm approvals.
A wind mitigation inspection is a visual examination of the condition of your roof and the techniques used during its construction.
The bulk of the wind uplift design approach presented by the fll german guideline for the planning execution and upkeep of green roofs consists primarily in first calculating the building s wind loads in accordance with european standards and in line with the above testing procedure.
Post test inspection of all shingles that unbonded during the testing revealed that at a minimum creases were present.
Consumer reports reveals the best roofing shingles from its comprehensive tests including 3 tab architectural and multilayered architectural asphalt shingles.
Fm loss prevention data sheet 1 52 fm 1 52 field uplift tests provides for two methods of testing wind uplift resistance.
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The test frame has the appropriate roof deck attached to supports.
For mechanically attached single ply roofing systems the test involves building a roof assembly on a test frame that measures 12 feet by 24 feet.
For this reason someone will need to be present to allow the inspector to access the attic and view the underside of your roof.
Unlike a typical home inspection a wind mit inspection focuses on your roof.
Types of wind uplift tests.
The negative pressure test and the bonded uplift test.