If there is more than one layer of old shingles or if the single layer is extensively warped or damaged.
Proper way to shingle a roof.
This picture gives you an idea of the condition of the existing roof plywood and you.
How to shingle a roof 90 pics pro tips recommendations step 1.
Proper steps to shingle a house roof preparation.
Many pros shingle in a vertical line up the roof because it s much faster.
Step one in any roofing project is always safety first.
Starting at the bottom of the roof map out a guideline with chalk.
Remove existing roof and underlayment.
Using the chalk line snap a line between the two marks to get a straight edge.
The original plan was to preserve a portion of the existing roof since.
Use your chalk and tape measure to mark about 12 inches up on the roof for the first set of shingles.
Understand the physics of how a sloped shingle roof works.
To start installing shingles line up aluminum drip edge flush with the edge of the roof and make a pencil line at the.
How to install asphalt shingles 1.
Roll out a single layer of roofing.
Known in the trade as vertical racking or staggering this how to lay shingles method enables the roofer to install a single column of shingles all the way to the peak without the wasted back and forth motion necessary to fill several rows of stair steps.
Before laying down shingles you need to protect the roof with sheathing.
Asphalt roofing shingles simply rely on the force of.
Installing roof shingles in 11 steps.