Metal Roof Over Shingles Or Not

Metal roof over shingles condensation.

Metal roof over shingles or not.

After all you ll be making a significant and long term investment. Choosing to install a metal roof this way can save you some dough and garner all of the benefits of a metal roof in the humid climate of florida. Not that it really impacts your question but most metal roofs today are steel or aluminum. Metal roofs generally can run from 120 to 900 per 100 square feet one 10 foot by 10 foot area or a square of material while asphalt shingles will be between 100 and 200 per 100.

Once metal roofing was found only on high end architect designed homes. Metal roofs must be laid flat on a vapor barrier because steel will condensate if there s any air space underneath it. My experience has been over 35 years and tens of thousands of installations of metal roofs over old shingles. Metal roofing is increasingly found in conventional houses thanks to increasing availability and improved manufacturing processes according to industry statistics market share for metal roofing has been increasing at a rate of roughly 3 percent each year over.

I always suggest a layer of underlayment between the old shingles and the metal roof. Doesn t provide the flattest surface for the metal roofing to be installed over each course of shingles is about a 1 8 higher than the course just below it. Both metal and shingle roofs are great options for your next roofing project. Metal roofs are not just a novelty.

A metal roof can be installed over a shingle roof but you ll need to make sure the plywood under your shingle roof is in good enough shape to handle a new metal roof over top. Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros. Asphalt shingles are the most popular roofing material. They are available in a variety of colors and textures are low cost and provide a traditional aesthetic.

If it s slightly windy keep the steel downwind from you so a gust of wind doesn t knock you over. If you are trying to decide between the two materials it s important to carefully look at the metal over shingle roof problems. Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface. Also don t go up on the roof if it s windy.

That s no longer true. Fiberglass core or matting an asphalt coating and a ceramic or stone granule surface give this material its durability.