The topic keeps coming up about overlaying roof shingles. For those who may not know what overlaying is, it is simply applying new shingles over top of existing shingles without stripping the roof. For the roofer he has a substantial savings on labour for preparation of the roof , no disposal fees, very little mess to deal with, no labour or transportation fees related to the disposal of the old shingles. The homeowner gets a couple hundred dollars off, and sometimes not that, he has no idea of the condition of the sheathing or other structural related problems, and has a roof that will not last as long.Estimates are 20% shorter lifespan.
