If installing a new roof on a bare roof deck cut 6 inches off the first starter course shingle and apply the rest of it on the lower corner of the roof overlapping the rakes and eaves by 1 2 inch.
Muдequitos in a bundle of roofing.
A metal roof can last 50 years while slate roofs can last more than 100 with diligent upkeep.
Installing a new roof over an existing one also called a layover or nailover is often possible although not always the best option.
Roof coverings are addressed in chapter 15 of the ibc and chapter 9 of the irc.
A look at different roof installation methods.
The roof joists beams etc.
The roof will not be entirely flat as you will need to plan for rain water drainage via water drains placed strategically within the roof surface.
Cr tests only asphalt shingles but below we also offer information about faux slate and composite tile.
Both codes provide requirements for roof coverings commonly used on high sloped roofs such as asphalt shingles clay and concrete tile wood shakes and shingles and metal roofing and for roof coverings typically used for low slope.
Or if all the sheathing will be replaced.
For one you will need to check with your local building department and ask if this is an approved installation method.
No permit is required for a job where you roof over an existing layer or replace only part of the roof sheathing second cold process application of modified bitumen roofing is best done in warm dry weather.
How to install a roof over an existing roof.
However there are some things that you will want to check out before doing it this way.
A pvc roofing system such as the one from ib roof available in either 50 mil 60 mil or 80 mil thickness would be an ideal type of a roofing membrane for such a roof.
On laminated shingles this nail spacing is not as immediately apparent as it is on three tab shingles where the nails are placed above the cutouts.
The standard nailing for asphalt shingles is a four nail pattern with nails placed 1 inch from each end of each shingle and then two nails placed 12 inches in from the end nails.
One of my builders loads the roofs but stacks them like dominoes hard to grab shingles since i have to bend over for every bundle.
The other builder i load so i usually make three stacks for a 30 35 sq house.
I have roof top delivery for every roof except a small multi layer steep tear off every now and then.
The system includes all the.