Ventilation is the cheapest thing that makes a roof last, and Portland metro.
At a glance
- Intake at the soffit and exhaust at the ridge have to be balanced.
- Ridge vent with blocked soffits pulls air out of the house instead.
- Insulation pushed into the eaves is the most common blocked intake.
- A roof that ages early from underneath is usually an attic problem.
Highly rated roofers across the county
Ranked by rating and review count. Call two or three before you decide.
No 1
No 2
No 3
High Performance Homes
4.8 from 1,091 reviews
Highly reviewed10 years in businessStreet address on fileWebsite
Bliss Roofing
4.9 from 878 reviews
Highly reviewed55 years in business
Interstate Roofing
4.8 from 779 reviews
Highly reviewedOpen 24 hours35 years in businessStreet address on fileWebsite
DaBella
4.6 from 1,021 reviews
10 years in businessStreet address on fileWebsite
Grant Roofing & Pressure Washing
4.9 from 659 reviews
Highly reviewedOpen 24 hours25 years in businessStreet address on fileWebsite
Pfeifer Roofing, Inc.
4.9 from 622 reviews
Highly reviewed45 years in business
Northwest Roof Maintenance Inc.
4.8 from 658 reviews
Highly reviewedOpen 24 hours20 years in businessStreet address on fileWebsite
Giron Roofing Inc
4.9 from 507 reviews
Highly reviewed15 years in businessStreet address on fileWebsite
Geek Roofing
5.0 from 400 reviews
Highly reviewedStreet address on fileWebsite
Common questions
How much attic ventilation do I need
The usual rule is one square foot of net free vent area for every 150 square feet of attic floor, halved when a vapor barrier is in place and intake and exhaust are balanced.
Can ventilation be fixed without a new roof
Soffit intake can be opened any time. Ridge exhaust is far cheaper while the roof is off.