Requirements Of Good Roofing System

To acting as a structural diaphragm in certain situations.

Requirements of good roofing system.

High wind shingles are rated for 130 mph. Elevate perimeters of roofing deck surface with canted and tapered insulations. Find out how all the components work together to keep moisture out your energy costs down and your house looking terrific. This will help keep water away from curb flashings says peterson.

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. A roof system is so much more than shingles. The most common rafter spacing is 24 inches and 5 8 inch plywood is recommended for that. Clearly your gable venting system is adequate otherwise your roof wouldn t last as long as it did.

The roof covering should have adequate resistance to resist the effect of weather elements such. It takes more than shingles to protect your home. Breathe for balanced attic ventilation. The roof should satisfy the following functional requirements.

The use of thermal insulation in roofs or roof assemblies must be evaluated in conjunction with the type of roof system. Find out how all the components work together to keep moisture out your energy costs down and your house looking terrific. A roof system is so much more than shingles. Defend helps protect against nature s elements.

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. Provide continuous vapor barriers on the decks under the roofing. A common mistake is to fail to connect the roofing system to the air barrier of the exterior wall 3. It will support roof.

As stated in the 2006 ibc roofs must serve to protect the building. The roof guy post author july 31 2018 at. It takes an integrated system of components and layers designed to help perform in three critical areas. For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended.

Seal helps create a water proof barrier. Hi eilene congrats on getting 30 years of service lifespan from the old asphalt roof. 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.