Posted on July 18, 2015
Many older homes we see don’t have adequate ventilation. This can lead to all kinds of problems.
Winter Problems Caused by Poor Ventilation
When it’s cold out, any moist warm air that gets into the attic condenses. This leads to mold problems and hidden rot and/or corrosion—none of which is covered by your home owner’s insurance policy.
Summer Problems Caused by Poor Ventilation
When it’s hot out, all that trapped hot air heats up your house. It’s not unusual for a poorly vented attic to hit 150 degrees. A well-vented attic usually tops out at about 110 degrees. Obviously, you’ll have a much higher electric bill if your air conditioner is competing with 150.
All that trapped heat has another downside. It shortens the life of your roof. The edges of the shingles curl up, making them vulnerable to wind damage all year round.
Curled shingles are even more likely to cause serious problems during winter. The trapped water freezes, encouraging the formation of an ice dam. The ice dam then traps even more water. This backs up under the shingles and drips through the nail holes holding the shingle down. Before you know it you have damaged drywall and mold issues.
Roof Ventilation Issues Can Be Fixed.
The best time to fix poor ventilation is during reroofing. That’s the logical time to correct the problem.
You’ll want to look at both the soffit vents which let air into your attic space and the ridge vents which let the air out. It’s especially important to realize that the entire underside of the roof deck needs to be washed with air. That only happens if there are enough soffits.
You’ll also want to be sure that your ceiling plane is airtight. That means you don’t want any cracks in the ceiling. You’ll also want to check to see if there are insulated boxes around any can lights and spray foam sealing up any electrical penetrations through the drywall. Keeping air from flowing into the attic from the house is vital.
Experts recommend that you vent your roof so that there are more places for outside air to get in than there are escapes for the air to get out. This keeps the attic under pressure, so you lose less air from inside your house if there are any leaks. That reduces your heating and air conditioning costs.
Hayes Roofing Company Vents Roofs.
We can install soffit vents for our clients as part of our reroofing service. We’ll assess your home and discuss with you what could to be done to protect your most valuable asset.
We recognize that reroofing a house is a serious investment. Our goals is to ensure that investment performs well for you for as long as possible.