Your roof and siding are the key to a welcoming first impression and your first line of defense against the elements. Few things play as great a role in the appearance and comfort of a home. If you’re a homeowner in need of a roofing or siding replacement, you may feel uneasy about how much it will cost you. It’s true that projects of this size tend to be good investments. But the good news is you can generally avoid cost overruns, ensure you’re working with a transparent contractor, and secure financing to cushion the impact on your household budget. The following information will help you do all those things, regardless of whether you’re in our service area. Let’s look at the new roof and siding costs you might expect for a typical replacement project. And, at the end of this article, we’ll also tell you the single greatest cost that people tend to ignore. One of the biggest factors influencing the cost of a roofing job is whether to do an overlay (re-shingle over your existing roof) or replace the roof. Replacing a roof costs roughly twice the amount to overlay, while re-shingling a roof that actually needs to be replaced can be ruinous (We’ll explain why in a moment). Angie’s List lays out many of the pros and cons here. Given the right circumstances, either an overlay or a reroof can be sensible, but your contractor should be able to provide a clear rationale for their recommendation. There are two types of mistakes that are very dangerous with overlays. First, New York building code (and just best practices) limits contractors to adding one layer of roofing shingles over the original one. Also, you can only add shingles over 3-tab (flat) shingles, never architectural shingles.
Here’s why:
First, a layer of shingles placed over architectural, or dimensional shingles isn’t likely to last long. It’s like duct taping a bumper back on a car.
Second, an improper overlay will harm the structural integrity of the entire roof.
Finally, if there’s any underlying damage, mold or rot, it will go unnoticed and become far worse.
We know roofing shingles aren’t a day-to-day topic of conversation for most people, so here’s an article that lays out the distinction between 3-tab and architectural shingles.