Sheet Metal Over Shingles

This method has its benefits as well.

Sheet metal over shingles.

Begin laying the metal sheets from the bottom to the top of the roof. Asphalt shingles can weigh up to four pounds per square foot depending on the brand. The low weight of metal roofing is one thing that encourages this. However it is best to consult with a professional as to your situation.

Metal roofing shingles have been the first choice for designers and architects since the early 1900 s offering a roofing solution that is highly durable light and virtually fireproof. If you want to install steel over asphalt your best choice for installing metal roofing is to use a steel shingle system like the one shown instead of the more common and more expensive standing seam steel. Otherwise you will need to remove the shingles. Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps.

Metal is the best choice due to its very low weight per square foot and its unique design. Screw the metal sheets into the slat board with a wood screw every 2 feet along the edges. Metal roofing is also available in the form of shingles. In a standing seam roof long single panels run vertically all the way from the eave to the ridge.

If you don t want to take our word for it check with your local building department. It provides a solid flat surface to attach the new metal roof to it creates an air gap between the back of the metal and the shingle roof which allows for airflow. Installing the metal roofing over 1x4 s allows the ability to also install additional insulation under the metal roof. The purlins are screwed or nailed down to the roof deck depending on how the metal roofing manufacturer has testing for their roofing panels and then the metal is installed to the purlins.

In many cases we are probably adding less weight back to the home than what the current shingles have lost due to granule wear and oil evaporation this is important to keep in mind. However you should only install a metal roof over shingles if you have less than four layers of shingles on the roof. Overlap the rises and dips if using corrugated sheets or lay flat sheeting with a slight vertical overlap. A metal roof is an alternative to a shingle covered roof but a metal roof can actually be installed over shingles.

The second way to install a metal roof over a shingle roof is with the use of purlins or battens. You want to be sure that the roof and shingles are in suitable shape for the project. Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails. The aluminum shingles weigh about 1 8 what asphalt shingles weigh and steel weighs about 1 4.

Heather little can offer you one of the best selections of sheet metal shingles in the roofing industry.