Steel roof over shingles

You should always put a new underlayment over the old shingles. Whether boards are put down or you go direct over the old shingles is very much a function of the metal roofing product you choose. When installing a metal roof over shingles , homeowners can opt for either a steel shingle system or a standing seam steel system. Both are expensive but last a lifetime. Can you avoid tearing off your old asphalt shingle roof by putting a steel roof over it?

Most codes now allow no more than two layers of roofing before requiring a complete tear-off. So, if your roof has two layers, it may require a complete tear-off, even though steel is lighter than asphalt. Codes vary, so call your local . In this video we go over how we put a metal roof over shingles on our mobile home. The metal roofing industry has taken a. Steel roofing offers many benefits over slate tiles or asphalt shingles. Manufacturers provide 30-year warranties on metal roofing products.

Installing steel roofing over existing roofing materials is fairly simple. Metal roofing is resistant to fire, rot, and termites. Use furring strips to build a slat board on the roof, then mount the . Step by step instructions and videos on how to install metal roofing over an existing shingle roof. The second way to install a metal roof over a shingle roof is with the use of purlins or battens.

The purlins are screwed or nailed down to the roof deck, depending on how the metal roofing manufacture has testing for their roofing panels, and then the metal is installed to the purlins. My answer often surprises people. However, it is based upon experience with tens of thousands of installations over many years.

There are three ways to install a metal roof over shingles. In this article, I will go over the three different ways and what their pros and cons are. The local building department should always be consulted with because each department might have their set of requirements for doing a replacement roof in their . Yes, you can install a new metal roof over the top of an existing asphalt shingle roof provided there are not too many layers. One of the reasons steel roofs have become so popular is the simplicity and economy with which they can be placed over an old shingle roof. I would like to know what the pros and cons are in regards to putting on a metal roof over your excisting shingles verses removing the shingles , and also if the warrenty is any different if you leave the shingles on.

Like all such questions, more details are required before a definitive opinion can be . Water vapor build-up and attendant mold and rot are not reasons alone to avoid installing metal over shingles. Roofers can install a vented metal roof over existing shingles , which would eliminate the vapor problem. Read on to see why we would choose metal over shingles. Now, assuming the average cost of $10.

The low-end cost for steel shingles installed over -top of the existing roof would be around . Client wanting to upgrade shingle roof to metal. Wondered about leaving on the shingles. Before installing a Metal Roof Over Shingles , your current roof must meet a few requirements.

Make sure that the current shingles are in a single layer.