I got this directly from the 1 metal manufacturer in the us.
How to overlay shingles on a roof.
The old roof is not so much being replaced as it is being covered over with a new roof.
Since it s being put on top of another less than perfect roof it s likely that it may not look as good as a brand new roof would.
Place nails in the three tab shingles about 3 4 inch 1 8 centimeters above the cutouts near where the tab meets the upper part of the shingle.
A metal roof should always be applied after the old shingles are torn off completely and new synthetic felt paper is applied.
Their representatives said absolutely not to overlaying shingles with a metal roof.
This may not seem like the obvious way to replace a roof but many homeowners choose this method for some significant advantages.
Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros.
While this isn t the most common method of roofing it does happen especially when homeowners are hoping to save a bit of money on their overall roofing costs.
An overlay roof occurs when keep your existing roof as is.
Metal roofs offer energy savings but do cost more upfront than traditional.
When you overlay a new roof you attach the new shingles or other roofing material to the existing roofing material.
Overlaying asphalt shingles with a metal roof is a big no no.
By placing shingles on top of a damaged roof you ll affect the way the roof looks.
Lay a starting row at the bottom of the roof along the edge.
Skipping the whole roof tearing process can save time energy and money that would have towards a labor intensive process.
That said overlaying asphalt shingles with a metal roof could be an option provided there is no underlying damage.
We discuss the nesting method which helps minimize an uneven appear.
In this video we provide details on how to install roof shingles over existing shingles.
How to shingle over existing shingles and how to shingle a roof how to install roof shingles shingle layout lines h.
Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface.
An overlay roof or the act of overlaying a roof is when your roofer puts a second set of shingles directly on top of your existing roof.
Roofing second layer of shingles roofing.