STEEP-SLOPE ROOFS

WATER SHEDDING ROOF TYPES

The following roof coverings are commonly used on steep-slope roofs. These coverings are water shedding, rather than waterproofing. Special underlayment provisions are required when slopes are relatively low. The NRCA Roofing Manual provides underlayment guidance.

METAL PANELS

Steep-slope Metal Panel Roof

Hydrokinetic Metal Roofs come in two different forms. The first kind is known as an R-Panel (screw down) roof. The second type is known as a Standing-Seam system. Both have their advantages and disadvantages. The primary difference is R-Panel is less expensive to install and Standing-Seam is less likely to require major repairs. R-Panel roofs will require the screws to be replaced every 10 – 15 years with larger screws, because thermal cycling will cause the pilot holes to slowly expand as they rub against the screws. Standing-Seam roofs do not require this type of maintenance, as the fastening system is hidden.

PROS & CONS OF METAL PANELS

PROS
  • Longevity
  • Aesthetically pleasing
  • Low Maintenance (Standing-Seam)
  • Can be installed over most types of wood decks

CONS
  • Can be easily dented by debris and hail
  • Require a skilled installer
  • Flashing details can be difficult and cause source of leaks.

ASPHALT SHINGLES

Steep Slope Asphalt Shingles

Shingles are the most common type of roof found in the US. They are finberglass-reinforced mats soaked in asphalt and surfaced with granules. The granules are considered the life of the shingle, as they protect the mat from debris and UV rays. Shingles are available in 3-Tab, Architectural & Designer styles.

PROS & CONS OF ASPHALT SHINGLES

PROS
  • Reliable and proven dependability
  • Speed of install
  • Low price point
  • Can be installed over most types of wood decks

CONS
  • Easily damaged by severe weather
  • Relatively short life span (compared to other steep-slope options)
  • Color easily fades and is difficult to match during repairs

CONTACT US

SLATE

Steep-slope Slate Roof

Slate is one of the most time tested roof solutions in the world, and is considered a family heirloom to many who have had the same roof on their stylish house/building. Slates aesthetic appeal is unrivaled, as is it’s longevity. Many slate roofs have been known to last more than a century. This class of roof comes with a high price point and the need for excellent structural support, however. Due to these reasons, many do not find slate to be a viable option for their property.

PROS & CONS OF SLATE

PROS
  • Beauty & Uniqueness
  • A true “lifetime” roof
  • Highly resistant to storm damage
  • Requires little maintenance

CONS
  • High price point
  • Structural Integrity is key to hold the load of slate
  • Expensive and difficult to properly repair
  • Component parts must be copper or lead to avoid higher rate of deterioration than the slate