Use the chalk line to snap a straight line vertically every 6 inches.
New roof installation length.
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.
Figure out the slope of the roof by setting a carpenter s level on the underside of one rafter in the attic.
Install the drip edge on the gable ends of the roof after you finish installing your underlayment.
The complexity of the roof.
Slope is calculated as rise over run.
Expect to spend 1 500 to 3 000 to remove your current roof before installing a replacement.
Ranch homes for example are much easier to roof than tudor or victorian styles.
Use measuring tools to find the length and width of the roof from the ground outside.
The more peaks valleys skylights and other obstacles the roof has the higher the installation cost will be.
Measure the vertical distance rise from the 12 inch mark on the level run to the underside of the same rafter.
Nail it every couple of feet.
When old shingles are torn off new roofing paper starter shingles ridge vent and moisture barrier are installed.
Just hold the drip edge snug against the fascia and fasten it through the top into the decking with roofing nails.
Most ranch style homes in the us measure an average of 15 to 20 squares in terms of the actual roof surface.
Every 5 inches make a new mark until you get to the rop of the roof.
This translates to 6 725 to 9 000 for the very basic composition shingles roof installed based on the average installed cost of 450 per square with a typical 5 year workmanship warranty.