Old House Roof Ventilation

Soffit vents come in several sizes and styles including small round discs and rectangular grilles.

Old house roof ventilation.

There are some styles of vaulted ceiling homes or flat roof homes that have ventilation spaces within the roof itself and no attic. The hvac system and the roof. Vents come in various styles. Air flows in through the soffit vents and out through the roof vents.

This is called passive ventilation. These ventilation needs are calculated differently. Strips vents come in white brown and silver. The key to proper ventilation of your roof and attic is balance.

Sure installing roof vents for older homes can reduce your hot air during the summer but there are probably more low risk cost effective ways to increase your home s energy efficiency. Hot air exhaust vents located at the peak of the roof allow hot air to escape. A ridge vent is a ventilation strip that is placed along the ridgeline of the home. Fitted with louvers or electronically controlled windows they help draw cool air in through soffits or open windows then vent warm air from the top of the building.

For the best results place roof ventilation near the roof s peak and soffit vents in the eaves. It also helps maintain good indoor air quality since stuffy humid air is continuously moved through the house into the outdoors. This style vent provides a quick way to ventilate every rafter bay. If you see dampness or frost you need better roof ventilation and some attic vents.

Intake vents located at the lowest part of the roof under the eaves allow cool air to enter the attic. The amount of space you devote to intake must be equal to the amount you allow for exhaust and these must be calculated according to the size of your attic and slope of your roof. Before ridge vents became standard cupolas were used to cool houses and barns. Good roof ventilation can do this but shingle color sun exposure and insulation are exponentially more important to overall energy efficiency than ventilation.

An adequately vented roof and attic helps extend the lifespan of two of the most expensive systems in your house. We opted for aluminum strip vents that measure 3 in. Vent roofs with steeples towers or cupolas can be found in different buildings from barns to cathedrals. Roof ventilation in a cold climate vents moisture and ensures a cold roof temperature to avoid ice dams.

Prior to installing the ridge vent a 1 inch wide strip of roof decking is cut out along both sides of the ridgeline to allow for air movement through the vent. Wide x 8 ft. Tearing off an old roof offers the opportunity to have your roofing contractor add one of these upgrades. The building codes and building science for natural roof ventilation however only appeared in the 1940s.

You ll pay less than 3 for an 8 ft.