Architectural shingles are a different style of asphalt shingle that are thicker than a 3 tab shingle and layered for an upscale look.
Re roofing with architectural shingles.
The standard practice is to limit to a total of two layers of shingles.
Having said that it will be nearly impossible to get a good looking quality installation.
These shingles often cost 200 400 per square.
Instead of one layer laminated or architectural shingles have two or more layers with three dimensional tabs of varying sizes.
At 32 000 to replace 37 squares of architectural shingles we have 32 000 37 squares 865 per square 100 sq.
Architectural shingles are available in 30 or 50 year varieties.
After that you should tear off old shingles before installing a new layer.
In the roofing industry laminated shingles are further described as being architectural because they re specially engineered to create architectural interest for the roof by means of the individual shingle s contour cut and dimensional thickness.
Fastening nailing details when re roofing with asphalt shingles use galvanized roofing nails long enough to fully penetrate the sheathing typically 1 1 2 inches for a second roof and 1 3 4 inches for a third.
The new cool roof requirements affect new construction significant repairs of existing roofs re roofing plus additions and alterations of existing buildings and homes.
With the old 2005 title 24 energy code a residential cool roof was an optional energy efficiency measure however on january 1 2010 cool roofs are now required for most.
The shingles are usually the same size as the basic three tab but a laminated shingle can weigh up to 50 percent more which may increase durability and come with a longer warranty.
The quick answer is yes you can re roof architectural shingles over existing architectural shingles however you must check with the shingle manufacturer as well.
A more appropriate range for a simple replacement in la would be 450 to 650 per square depending on the contractor and warranty.
Re roofing with 3 tab shingles are pretty straight forward.
What kind of architectural shingles are you getting with this roof replacement quote.