Can I Install Metal Roof Over Shingles?

Before we discuss whether you can put a metal roof over an asphalt roof, you need to be acquainted with both.

3-tab, dimensional, and luxury are the three types of asphalt shingles. While 3-tab shingles used to monopolize the roofing market, dimensional shingles are now the most often installed variety on roofs. Luxury-style shingles are just as highly advertised as dimensional shingles, but they cost nearly twice as much.

Metal roofs are of two types: standing seam and screw-down panel. A standing seam metal roof system is made up of panels series joined together at the seams or mechanically seamed, allowing the panels to expand and compress freely when the metal heats up. A screw-down panel is just exactly what it sounds like: it’s screwed down. The screws are screwed through the metal panel, leaving no space for expansion or contraction. Due to its lack of extension capabilities, installing a screw-down panel over a hot space such as your house or office isn’t advisable.

The project may be hassle-free if the new metal roof is installed properly and your local roofing contractor handles everything correctly. You may save up to 25% on labor expenses by avoiding taking off your old shingle, installing new underlayment, or paying disposal fees for the old roofing materials.

You should follow these measures while trying to save money on the pre-installation of your metal roofing over shingles.

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