Wind Test To Roofing

The negative pressure test and the bonded uplift test.

Wind test to roofing.

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. Fm loss prevention data sheet 1 52 fm 1 52 field uplift tests provides for two methods of testing wind uplift resistance. Ul 580 is the standard for tests for uplift resistance of roof assemblies. Consumer reports reveals the best roofing shingles from its comprehensive tests including 3 tab architectural and multilayered architectural asphalt shingles.

The specific test that pertains to wind uplift utilizes a test apparatus designed by fm approvals. Post test inspection of all shingles that unbonded during the testing revealed that at a minimum creases were present. Unlike a typical home inspection a wind mit inspection focuses on your roof. The negative pressure test utilizes a five foot by five foot dome that is placed over the roofing membrane surface.

The test procedure is then based on placing the roof assembly into the test chamber and subjecting it to a prescribed sequence of 5 phases of oscillating positive and negative pressure cycles simulating dynamic wind conditions over 80 minutes of total testing. For this reason someone will need to be present to allow the inspector to access the attic and view the underside of your roof. 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. Types of wind uplift tests.

From roof covering materials solar panels and underlayment products to wind driven rain flame spread acoustical and uplift testing our complete suite of capabilities is exactly what you need. 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. A wind mitigation inspection is a visual examination of the condition of your roof and the techniques used during its construction. This type of test protocol is well respected and recognised in germany.