Javen Simon

Posts Tagged ‘old roof’


Can’t We Shingle Over The Old Roof?

Tuesday, July 7th, 2009

I hear this question a lot and the answer is: Sometimes it is possible, but not advisable. The original roof and roof deck has to be in extraordinary condition to meet the standards necessary for the new roofs warranty to apply. If the original roof meets the necessary criteria, certain procedures have to be performed, such as removing the ridge capping, nailing down or replacing any loose, missing, or curled shingles. Cutting back the eaves. Inspecting all flashing, vents, and plumbing stacks, and ensuring the rain water will correctly flow into the gutters due to new height of roof edge.

Another factor worth considering is if the supporting structure of the roof can support the additional weight. For an average 2000 square foot roof one layer of roofing will weigh approximatly 5000lbs. Most roofs will easily handle the extra weight, but I have seen some roofs that can barely handle the roof they already have. This reinforces the fact that each roof is unique and needs to be treated as such. For resale value of your home, warranty purposes, and peace of mind I always recommend removing the original roof before installing your new product.