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.
Roll out a single layer of roofing.
Many pros shingle in a vertical line up the roof because it s much faster.
Remove existing roof and underlayment.
Continue to chalk additional guidelines based on the width of the shingle through at least four courses rows across the roof.
How to shingle a roof 90 pics pro tips recommendations step 1.
Installing roof shingles in 11 steps.
How to install asphalt shingles 1.
Proper steps to shingle a house roof preparation.
Asphalt roofing shingles simply rely on the force of.
Use your chalk and tape measure to mark about 12 inches up on the roof for the first set of shingles.
Using the chalk line snap a line between the two marks to get a straight edge.
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.
Pull the drip edge down about a half inch from that line to.
Starting at the bottom of the roof map out a guideline with chalk.
Before laying down shingles you need to protect the roof with sheathing.
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.
This picture gives you an idea of the condition of the existing roof plywood and you.