Level 4 Roof

On the roof hold the level perfectly level and measure the height from the roof to the level 12 inches away from where the level touches the surface this will be the rise.

Level 4 roof.

These impact resistant beautiful shingles have been specially engineered to face some of the worst storms and extreme weather and still look their best. Wind ratings are a separate classification. The main level basement and upper level. One roof has the same smog fighting potential as 2 or more trees assuming standard roof of 30 squares catch up more with smog reducing granules and other malarkey roofing news.

Lawrence berkeley national laboratory and 3m. As you contact various contractors or suppliers you should ask about roofing materials that meet ul standard 2218. As a result it no longer has the ability to transfer impact energy and the mat is damaged and or punctures occur to this system. The list of approved laboratories is shown below.

With class 4 shingles there are no splits or tears. However a story refers to a level that resides above ground. Older class 4 roof systems can sustain damage from 2 1 2 stones. In a class 4 ul 2218 impact resistance test a 2 inch steel ball is dropped from 20 feet to see if the shingles will fracture.

A class 4 roof covering receives the highest premium credit. Single story house plans sometimes referred to as one story house plans are perfect for homeowners who wish to age in place. As asphalt ages it becomes less pliable and more brittle. A single story house plan can be a one level house plan but not always.

The class 4 shingles weather the storm with the added impact resistance these shingles offer a level of added protection that you will want for the life of your roof. Class 4 roofing shingles do not necessarily feature a higher wind resistance.