Requirements Of Good Roofing System

Hi eilene congrats on getting 30 years of service lifespan from the old asphalt roof.

Requirements of good roofing system. This requires roofs to resist high and low temperatures rain wind driven rain high winds exposure to ultraviolet radiation and in some areas snow ice formation and hail stones. The use of thermal insulation in roofs or roof assemblies must be evaluated in conjunction with the type of roof system. It will support roof. The national roofing contractors association nrca recommends expanded polystyrene insulation intended for use as rigid board roof insulation have a minimum density of a nominal 1 25 pounds per cubic foot that complying with astm c578 type viii having a minimum density of 1 15 pounds per cubic foot.

The roof structure should be strong and stable enough to take up the anticipated. Find out how all the components work together to keep moisture out your energy costs down and your house looking terrific. Defend helps protect against nature s elements. As stated in the 2006 ibc roofs must serve to protect the building.

A common mistake is to fail to connect the roofing system to the air barrier of the exterior wall 3. Seal helps create a water proof barrier. Provide continuous vapor barriers on the decks under the roofing. The roof guy post author july 31 2018 at.

Installers should follow code requirements energy standards and manufacturer s guidelines for the use of insulation in an approved roofing assembly as they may differ across industries and product types. It takes more than shingles to protect your home. A roof system is so much more than shingles. The roof covering should have adequate resistance to resist the effect of weather elements such.

Total protection roofing system total protection is more than shingle deep. High wind shingles are rated for 130 mph. Find out how all the components work together to keep moisture out your energy costs down and your house looking terrific. Clearly your gable venting system is adequate otherwise your roof wouldn t last as long as it did.

The roof should satisfy the following functional requirements. This will help keep water away from curb flashings says peterson. For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended. Diy asphalt shingle installation is possible for those with good skills experience and equipment no support beyond standard roof sheathing is required for shingles 3 tab shingles are rated for 60 70 mph wind uplift while standard architectural shingles are rated for 110 mph winds.

The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that. To acting as a structural diaphragm in certain situations. Elevate perimeters of roofing deck surface with canted and tapered insulations.