Snow Blowing Into Attic Through Roof Vents

When i looked in the attic above the stain i saw snow that had blown into the garage attic through the soffit vent.

Snow blowing into attic through roof vents. I ve never had a problem with any of several hundred installations we ve done. Air blows into your attic through perforated soffit vents at the eves and helps push the air in the attic up through the ridge vent. This should lower the temperature of your attic and lower your energy bills in the summer months. Hi i m looking for suggestions to the possible cause of snow entering the attic through at least five of the seven roof vents on the home pictured in attachments.

Keeping rain from blowing in attic vents requires a few hours of your time but may save you the cost of expensive repair bills. Yesterday we had snow and high winds. Roofers often complain that roof vents battered by storms can fail allowing blowing snow and rain to penetrate the attic. Securing vents loose vent covers can allow rain to blow into the attic.

Homeowner had enough snow through one of the vents to cause considerable water damage to the storey below last spring. In one particular case it seemed to be a pretty big factor in the amount of moisture in the attic as there was serious frost covering most of the roof deck. After pretty much every storm like this i tend to find piles of snow in clients attics right around the gable end vents on the windward side of the attic naturally. That explained what had caused the water stains.

Engineered opening of 4 5 seems a little excessive to me the vents we use on a truss roof only require 7 8 each side 1 3 4 total. No matter how much wind and snow they should never allow snow into the attic. Intake vents located at the lowest part of the roof under the eaves allow cool air to enter the attic. Failing vents cause rot mould insulation damage call backs thousands of dollars of repairs and disappointed customers.

These vents give your roof a nice clean look and provide more open area for the hot air in the attic to escape. Another fine snow strong wind event here in eastern canada today. While some water can be blown into the attic through almost any type of soffit vent the amount of water intrusion increas es dramatically when the. Hot air exhaust vents located at the peak of the roof allow hot air to escape.