Defend helps protect against nature s elements.
Requirements of good roofing system.
A roof system is so much more than shingles.
Breathe for balanced attic ventilation.
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.
It takes an integrated system of components and layers designed to help perform in three critical areas.
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.
Find out how all the components work together to keep moisture out your energy costs down and your house looking terrific.
To acting as a structural diaphragm in certain situations.
Find out how all the components work together to keep moisture out your energy costs down and your house looking terrific.
Hi eilene congrats on getting 30 years of service lifespan from the old asphalt roof.
The roof covering should have adequate resistance to resist the effect of weather elements such.
It takes more than shingles to protect your home.
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.
As stated in the 2006 ibc roofs must serve to protect the building.
Elevate perimeters of roofing deck surface with canted and tapered insulations.
It will support roof.
Total protection roofing system total protection is more than shingle deep.
The roof should satisfy the following functional requirements.
High wind shingles are rated for 130 mph.
The roof structure should be strong and stable enough to take up the anticipated.
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.
Provide continuous vapor barriers on the decks under the roofing.
The roof guy post author july 31 2018 at.
Seal helps create a water proof barrier.
For rafters spaced 20 or more inches apart 1 2 or 5 8 inch plywood is recommended.
The use of thermal insulation in roofs or roof assemblies must be evaluated in conjunction with the type of roof system.
