This step is important because it brings the underlying surface back to a level height consistent with the rest of the roof plane.
2nd layer roof shingles.
Roof tear off vs.
2nd layer of shingles.
If you put a second layer on the second layer doesn t usually last as long as the first layer.
Yeah we ll say this.
This contractor told me i don t need to tear off my existing shingles when we re do our roof.
Also your roof was probably designed for only one layer of shingles.
This is why many building codes only allow roofs to have two layers of shingles at the.
Roof shingles are meant to be installed on a flat and even surface.
Layering asphalt shingles over existing roof shingles will save you a little money up front but there are a few cons to be aware of before going this route.
You have a roofing warranty to concern yourself with first and foremost and secondly structural integrity to consider.
How to shingle over existing shingles and how to shingle a roof how to install roof shingles shingle layout lines h.
That helps your final layer of shingles look flat with a proper installation.
Closed valley with a second layer over existing shingles.
Add a layer of shingles over the newly repaired area before you install your second layer of shingles.
Pros and cons of adding a second layer of shingles.
Adding a new layer especially with high quality composite shingles is very heavy and adds 350 450 extra pounds per square.
Posted july 31 2018 by onpage marie.
Roofing second layer of shingles roofing.
This usually means that the second layer of shingles was installed on top of a roof have curled or damaged shingles.
A complex roof is aesthetically very appealing and it would be somewhat of a waste to do a layover since the second layer of shingles won t lay flat won t look the same as the first layer and will be more prone to curling peeling and blow offs all of which will make your roof look less nice.
When rain or snow falls this adds a heavy burden to your house.
A roof is one of the most vital components of a house.
Well first of all we generally don t recommend you put a second layer of roofing shingles on it but it comes down to economics.