In terms of performance many homeowners choose a steel roof making it the most popular option when it comes to creating a metal roof over existing shingles.
Metal roof over shingles drip edge.
As long as the plywood under the shingle roof is in good condition this way can provide many benefits.
Standing seam roofs may have unevenness of the old shingles telegraphed through and cause ripples in the standing seam.
Slip the wide flat flange of the material all the way under the first course of roof shingles as illustrated.
Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails.
Many many metal roof installations are over existing shingles.
When choosing to install a metal roof homeowners need to.
Gable flashing trim in galvalume model 4206041 16 79.
3 install 1 4 purlins down over the shingles before installing the metal roof the third way to install a metal roof over shingles is by applying 1 4 purlins over the shingle roof.
Roof drip edge is important for proper roof installation to avoid leaks and to give a straight edge to the roof eaves and gable ends.
Installing metal roofing over shingles is the best solution.
Roof underlayment requirements over drip edge.
The low weight of metal encourages this.
How where should it be installed on roof eaves gable ends.
This is by far the most common way to install a metal roof.
Drip edges are metal sheets usually shaped like an l installed at the edge of the roof.
It is easier to do with more heavily textured metal roofs such as exposed fastened corrugated products and metal shingles.
If it doesn t pull the drip edge out slightly from under the shingles.
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Without a drip edge water may end up beneath the shingles and may cause damage to various parts of the home.
Drip edge or edge metal is a piece of metal that extends approximately 0 75 inch beyond the roof s edge to channel runoff into your gutters.
Also called drip edge flashing or d metal they serve a vital function by directing water away from the fascia and into the gutter.
Roof drip edge specifications are given here.
The metal used for the roof can be tin copper aluminum or steel.
Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps.
Make sure the outer edge extends over the gutter.
Metal sales 5 in.
Secure the drip edge with roofing cement.