Why ‘Pull Test’ On Your Roofing System?

"The attachment of the fastener to the roof deck is critical to the performance of the roofing system. Therefore, before deciding which OMG fastening solution to use on your next project, it’s a good idea to have a pull test completed.

Pull tests are used to determine on-site conditions. While pull tests are freq
uently requested for new construction projects, good roofing practice suggests they should always be preformed on re-roofing projects to determine the condition and suitability of the deck. This is particularly important as buildings age. Deck materials – steel, concrete, wood, cementitious wood fiber, gypsum, lightweight insulating concrete, etc. – are subject to a wide variety of conditions that can affect their performance and ability to hold fasteners or adhesives over time.

The ANSI/SPRI FX-1 standard requires 10 pullout tests for roofs up to 50,000 sq. ft., and another five tests for each additional 50,000 square feet or portion thereof. At least 50% must be conducted in corners and around the perimeter. Additional pull tests may be necessary based on the condition of the substrate.

OMG field technicians are trained to perform these tests to help ensure that you get the best solution for your project." -OMG

Source:

http://www.omgroofing.com/files/roofing-products/newsletters/vol1-issue2_december2009.html