Your unfinished attic probably isn’t a place you visit very often, but it’s an area of your home that deserves some attention, especially regarding how well it’s ventilated. A lack of ventilation in the attic can cause a host of problems that can easily go unnoticed until your home has suffered significant damage.
The Effects of Insufficient Attic Ventilation
In our climate, an attic can easily reach daytime temperatures exceeding 150 degrees in the summer and can experience significant temperature swings in the winter. If the attic isn’t vented properly to allow trapped heat and moisture to escape, you’re risking:
- Warping and decaying of the structural sheathing/decking that your roofing material is fastened to.
- Condensation formation on any metal materials in the attic, which leads to rust and corrosion.
- Premature aging of the shingles and other roof system components, which can shorten their lifespan.
- Moisture build up on the attic insulation, leading to a decline in its R-value and the potential for mold growth.
- An increased likelihood of ice dam formation in the winter. This occurs when melting snow refreezes along the roof edge, causing a buildup of ice that forces further snow melt underneath the shingles and into the attic and/or exterior walls.
- Excessively high household energy bills due to a decline in attic insulation effectiveness and heat transfer down through the ceilings into the finished living area.
- Unnecessary wear and tear on your home’s cooling equipment resulting in extra maintenance and repairs costs.
How To Ensure Your Attic Has Ample Ventilation
With adequate ventilation in the attic, the difference in temperature between the outdoor air and your attic is minimized, and heat and moisture get removed by steady airflow through the attic space. When you’re hiring a contractor to improve your attic ventilation, look for one who explains the need for a balance of air intake via eave vents and exhaust through a roof ridge vent, and recommends a total intake and exhaust ventilation of 1 square foot per 300 square feet of floor space.
To gain the greatest benefit from increasing your home’s attic ventilation, choose a contractor who also advises you it’s necessary to seal air leaks between the attic and your conditioned living space and install R-60 insulation between the attic floor joists.
If you’re concerned about a lack of attic ventilation in your Tulsa home, contact us at Perfection Roofing Inc. for expert solutions.