Can you put asphalt shingles on a 1/12 pitch roof?
The asphalt shingle manufactures recommend that you install asphalt shingles on a recommended minimum of 4 in 12 or greater however most manufactures will warrant their shingles down to a 2 in 12 pitch if the recommended installation method is used.
Can you put shingles on a 2 12 pitch?
Asphalt shingles are an effective roof covering material for sloped roofs that can be successfully used on slopes as low as 2:12. Asphalt shingles should never be applied to roof slopes below 2:12 (2” of vertical rise for every 12” of horizontal run, or 9.5°).
Can you shingle a 2.5 12 pitch roof?
Asphalt shingle manufacturers will warrant shingles installed on roof slopes as low as 2/12 when these special installation procedures are followed. Self-sticking rubberized asphalt products like Grace Ice & Water Shield are acceptable but expensive substitutes for #15 felt.
What is the code minimum for roof slope?
The minimum roof slope allowed by code for any type of roof is ⅛-in-12 (0.60 degrees), applicable only to coal tar pitch roof systems. All other flat roof materials require a minimum slope of ¼-in-12, which is why flat roofs are properly known as “low-slope” roofs.
Can I use shingles on a low pitch roof?
Most shingles may be applied on roof slopes of 2:12 to 4:12 (a “low slope” roof), providing that the shingles are adequately sealed against wind lift, and special procedures are followed. In many building codes, allowances are made to permit applications of asphalt shingles to low sloped roofs.
What kind of roof do I need for a 1/12 pitch?
Minimum Roof Slope (Roof Pitch) | R905. Mineral-Surfaced Roll Roofing can only be installed on roof slopes of 1:12 or greater (8% Slope). This means for every 12 horizontal units, the roof must rise a minimum of 1 vertical unit.
Can a roof be too flat for shingles?
The minimum pitch required for shingles is 2/12 which means for every 12 inches, the roof rises 2 inches. Any slope that has a pitch less than 2/12 is too flat for shingles and should be covered with flat roof materials such as TPO, PVC, EPDM rubber, or others.
Is a roof with a minimum pitch for drainage?
For drainage purposes, the current building codes require a minimum two percent slope or a one-fourth unit vertical for every 12 units horizontal. In other words, the roof must slope one-fourth of an inch for every 12 inches. However, a two-percent slope is plenty of pitch for proper water drainage.
What should I use on a low slope roof?
Membrane roof systems Because of this, low slope roofs need to be waterproof. That’s why the most common option for low slope roofs are membrane roof systems. Membrane roof systems are sheets, either 5 foot, 10 foot, 20 foot wide sheets of rolled synthetic, water repellent membrane.
Is a 1/12 roof pitch enough?
Additionally, for new construction, a roof system should meet building code requirements for minimum roof slope. For metal panel roof systems, NRCA recommends slopes of 1/2:12 or more for structural panel systems and 3:12 or more for architectural panel systems.
How do you determine the slope of a roof?
The slope of your roof is the ratio of vertical distance (rise) to horizontal distance (run). Just write down the measurements you found. There’s no need to simplify them. For example, if you find 4 inches of height with the tape measure at the 12 inch mark on the level, your slope is 4:12 or “4 in 12.”
What is the best brand of asphalt shingles?
A better quality of shingle will last longer, resist algae growth longer, and be more resistant to wind and hail damage. The three “top” brands are Certainteed, Owens-Corning, and GAF. These companies make high quality shingles and are about the same price. The next lower tier includes Tamco and IKO.
What is the lowest roof pitch for shingles?
Minimum pitch. The standard minimum pitch for shingles is 4″ on 12″. Most roofing manufacturers will warranty their shingle on slopes of 2″ to 4″ on 12″, but only if you have double felt protection (or an ice & water shield) underneath the shingles.
What is the average price of asphalt shingles?
The average cost to install an asphalt shingle roof is anywhere between $2,000 and $10,000 depending on the slope, pitch, and size of your roof. The material cost factors into that price, and as such, shingle prices vary depending on your location and the specific product.
How do you install asphalt shingles?
How to Install Asphalt Roof Shingles Step 1: Removing the Old Roofing Shingle Step 2: Take Measurements Step 3: Apply Waterproof Membrane Step 4: Installing Edge Flashing Step 5: Place the Starter Strip Step 6: Installing the Shingles Tips and Warnings