It stops water from getting through to the roof at the gaps between shingles and at the notches between tabs.
How is a roof installed.
Install the panel so that the short lip overlaps the large lip.
Shingles are installed in an overlapping fashion to provide complete protection for the plywood vapor barrier and other materials beneath.
Install the second course just like the first using the guidelines on the underlayment to get the correct overlap.
Straight off the bat.
Install the starter strip which is just a backing for the first visible row of shingles.
That said on average most contractors will charge between 3 50 and 5 50 per square foot or 350 to 550 per square 100 sq ft to install or replace an asphalt shingle roof on a typical house.
Continue adding panels until the roof is covered.
Next use 1 inch nails to secure some metal edging to the perimeter of the roof.
When an ice dam forms on a roof usually caused by poor attic insulation ventilation ice and water can work their way up under the shingles and leak back into the house.
The national average cost to replace a roof is 7 211 with most homeowners spending between 4 707 and 10 460 roof installation cost ranges from 400 to 550 per square depending on the roof size and materials used in reroofing.
A shingle is a piece of a roof cover.
Screw the new panel in place as described.
Also strong winds can blow rainwater under shingles.
But first here are a few precautions about the underlying material.
Metal roofing is also available in the form of.
Before you install metal roofing repair any damage to the wood under the shingles.
You may need to cut panels to fit angles using a circular saw with a metal saw blade.
We re going to break them down so you know what to look out for.
Thus at the mid point of the above price range you can expect to pay.
The silicone will spread and adhere creating a seal.
Address any existing roof leaks and replace rotten rafters or.
Installation of metal roofing over shingles.
It needs to be stated that not all roofs are made the same and not all roofers charge the same prices.
This type of roofing is a traditional building material that has been used on residences for hundreds of years.