Installing metal roof over shingles

Briefly I want to install metal shingle roof over two layers of old aspalt shingles on my cottage. Roof slope is 3:and there is no attic. Would it make sense to add foam insulation between old roof and new metal shingles to keep house . Homeowners looking to replace an aging roof have two basic options: they can either strip off the old roof and replace it with a new asphalt roof, or they can install metal roofing over the existing asphalt shingles.

Unless building codes require it, there is usually no need to tear off the old roof.

Installing metal roofing over. In this video we go over how we put a metal roof over shingles on our mobile home. Our year old she that we leveled in our last video, was in need of a new roof. We decided to replace 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 building department to know how to install metal roofing over shingles properly, code- wise.

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. Step by step instructions and videos on how to install metal roofing over an existing shingle roof. 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.

Hi, We wil be reroofing our house with an exposed fastener low rib steel roof ( inch high ribs every inches). My answer often surprises people. However, it is based upon experience with tens of thousands of installations over many years. Covering your existing asphalt shingles with metal roofing might be worth the expense. Here are some pros and cons.

Adding a metal roof to your home over your old shingles may not be a good idea. Yes, you can install a new metal roof over the top of an existing asphalt shingle roof provided there are not too many layers. Steel roofing offers many benefits over slate tiles or asphalt shingles. Metal roofing is resistant to fire, rot, and termites.

Manufacturers provide 30-year warranties on metal roofing products. Use furring strips to build a slat board on the roof, then mount the .

Pros and cons of putting a new roof over your existing shingles. If the right site conditions exist, and an installer is comfortable with the job, then installing a metal metal roof over an existing roof is not only environmentally superior (saves more debris from our landfills), but it can save money and provide a job that will . Now, assuming the average cost of $10. The low-end cost for steel shingles installed over -top of the existing roof would be around . 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.