Roof length measured in feet roof width measured in feet roof pitch.
How to shingle a 12 12 pitch roof.
If the roof shingles and all accessory roof components are arranged and overlapped with this in mind the roof should successfully shed water.
Shingles of all types need to have a slope to function properly.
Repeat this basic pattern alternating shingles across the roof working toward the right side using the chalk line to keep the shingles straight horizontally.
With that as background you are now ready to estimate how many shingles you will purchase for your roof project.
The 2 12 number is rise over run or two units of vertical for every 12 units horizontal.
The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.
Asphalt roofing shingles simply rely on the force of gravity to shed water from rain or snow melt.
There are also 29 standard sized shingles measuring 12 inches by 36 inches in each one of these.
Start by laying asphalt felt or other underlayment over the roof.
Overlap each row at least 3 to 4 inches.
Use a sturdy extension ladder that extends at least 3 feet above the eaves to climb onto the roof and secure the bottom to the foundation and the top to the eaves or fascia so it doesn t move.
If you live in an area with inclement weather you should consider using a special ice and water protector.
Using your staple gun secure the felt to the roof.
In the dictionary to shingle is.
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Butt a full shingle up against the cut shingle and nail into place.
They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends.
This roof shingle calculator requires four basic inputs.
That works out to about nine degrees if that works better for you.
Asphalt shingles continue to be the most widely installed roof covering option in north america.
Understand the physics of how a sloped shingle roof works.
Install new flashing metal.
The minimum requirement is 2 12.