7 16 osb is standard and 5 8 or 3 4 osb or plywood and fire pressure treated sheathing is available for special applications.
Gaf ventilated roof insulation panels.
5 8 or 3 4 osb plywood optional.
The first step is to check out this 60 second video and learn about the 300 1 rule the difference between intake and exhaust ventilation and why proper ventilation is so important to get right to help calculate your attic ventilation needs visit gaf ventilation calculator.
Sheathing pre space for thermal expansion.
Fully machined composite panel.
Get automatic lifetime protection on your entire gaf roofing system when you install any gaf lifetime shingle and at least 3 qualifying gaf accessories you ll.
The standard 1 vent space layout leaves over 92 open vent area for maximum airflow.
The designer should determine if a vapor barrier is required between the deck and the insulation.
It consists of a balance between air intake at your eaves or soffits and air exhaust at or near your roof ridge.
Ventilated roof insulation a.
Roof and wall nail base insulation.
Benefits of energyguard polyiso roof insulation include.
Fm approved subject to the conditions of approval as a roof insulation when installed as shown in the current edition of the factory mutual research approvals guide.
Roofing products residential roofing products roof and wall nail base insulation.
Care training and education care training and education.
Thermacal 1 and 2 ventilated roof insulation panels are composite ventilated roof insulation panels combining standard osb sheathing an air space made by solid wood spacers and polyisocynurate.
See the difference performance roofing insulation makes.
Proper attic ventilation systems allow a continual flow of outside air through the attic protecting the efficiency of the insulation and helping to lower temperatures in the living space.
Featuring gaf energyguard polyiso insulation.
The vapor retarder should.
Roofing products commercial roofing products insulation and cover boards insulation.
Nominal 4 x 8 panel.
Ventilation and attic vents.
Cornell corporation has products that have performed day in and day out on roofs nationwide for longer than most of our competitors have been in the business.