- How does extreme weather affect reproofing projects?
- What’s the difference between an architectural, or designer, shingle and a standard shingle?
- What type of warranty should I look for? Are they all the same?
- What is roof slope? Does the slope of the roof limit the choice of shingle that can be use?
- Is it always necessary to tear off existing shingles before reproofing? If they are torn off, who is responsible for the disposal of the old singles?
- Why is it said that the roof should breathe? How can you determine if the roof is properly ventilated?
- What function does the single underlayment serve?
Why is it said that the roof should breathe? How can you determine if the roof is properly ventilated?
The term ‘breathe’ refers to the ventilation system beneath the roof deck.Most shingle warranties require a lot of ventilation-as much as one square foot of net free ventilation area for each 150 square feet of floor space to be vented or one square foot per 300 square feet when both ridge and soffit ventilators are used.
An effective ventilation system will help:- Reduce attic heat buildup.
- Reduce attic moisture and condensation
- Prevent weather infiltration, i.e., drifting snow, wind-driven rain
Even if you feel you’ve had satisfactory ventilation performance with your old roof for as long as 20 years, it might be necessary to add ventilation with your new roof to meet the standards mentioned previously.
T: (510) 521-7334
F: (510) 521-4446
info@centralbayroofing.com
More contact information...
Established: 1978
Licence: 435272
Classification: C39
Affiliations:
F: (510) 521-4446
info@centralbayroofing.com
More contact information...
Established: 1978
Licence: 435272
Classification: C39
Affiliations:
- Alameda Chamber of Commerce
- Alameda Rotary Club
- National Roofing Contractors Association
- Associated Roofing Contractors of the Bay Area
- Better Business Bureau