What is the best slope for a roof?

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. For asphalt shingle, clay and concrete tile, metal shingle, slate and wood shake and shingle roof systems, NRCA recommends slopes of 4:12 or more.

What is code for roof slope?

General Minimum Roof Pitch Standards The minimum roof slope allowed by code for any type of roof is ⅛-in-12, 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.

What is roof slope cement?

The RoofSlope™ product is an acrylic modified cementitious sloping material designed to create auxiliary slope over traditional Cap Sheet roofs to divert water flow towards drains, scuppers, or an outside edge.

What kind of roofing slope do I Need?

1 Asphalt Shingles require a minimum roof pitch of 2:12 or greater. 2 Clay and Concrete Tile requires a minimum roof pitch of 2-1/2:12 or greater. 3 Metal Roof Shingles require a minimum roof pitch of 3:12 or greater. 4 Mineral-Surfaced Roll Roofing requires a minimum roof pitch of 1:12 or greater.

What are the slope requirements for mineral roll roofing?

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.

Why is steep slope roofing more visually appealing?

Steep slope roofing products are generally more visually appealing because they are critical aesthetic components for residential construction where the roof can consist of 40% of the exterior visual appearance of a home.

Can you put asphalt shingles on a sloped roof?

Use caution when stacking bundles on sloped roofs. ROOF SLOPE / ROOF DECKS: Never apply asphalt shingles to roof slopes less than 2:12. For slopes 2:12 to less than 4:12 (LOW SLOPE), see special underlayment requirements outlined below.