Proper roofing is integral to the structure of a house, and sometimes, even small errors in roofing, like a misaligned nail or using sub-standard shingles, can cause damage. While carrying out renovations on roofing, there are a few things to keep in mind, and not adhering to these can cause water damage, mold, and rot to permeate through the roof. Check out these common roofing mistakes that can occur during roofing renovations. Fitting a new roof over the old roof The only way to know what’s wrong with the old roofing is to tear it down and inspect it. Only after this can one ensure a correct roof repair or replacement. Installing a new roof over an old one without finding out the underlying issues is just covering up the problem and could result in costly repairs down the line. Also, the additional layer could increase the weight of the roof and put added pressure and stress on the walls. Using sub-standard shingles Buying shingles of strong and lasting quality is important so that they can withstand harsh weather conditions. Skimping on shingles during roof renovation only means that one may need to replace them sooner than usual, defeating the purpose of trying to save money in the first place.