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Fort Worth Roofing: Article About Roof Ventilation Basics

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Any assessment of a roof's condition requires a look at its ventilation system. A roof needs ventilation in order to prevent the buildup of hot air in attic cavities. These cavities are located below the roof within the structure of the building but outside the living spaces of the house. If hot air accumulates under the roof, the heat will transfer into the living space and reduce its comfort level. Hot days especially worsen the temperature in poorly ventilated spaces and make the house even hotter, which will drive up cooling costs.

Excess heat in the roof is also detrimental to the building. Expanding boards add to structural stress. Asphalt materials in the shingles could soften and increase the likelihood of a shingle tearing off nails and sliding down. Trapped heat could also introduce the possibility of water condensation and moisture damage as well.

A homeowner who feels hot walls or excessive heat in a space could ask a Fort Worth roofing company to inspect the roof. If a roof has no way to expel heat, or the system is blocked or inadequate, then a professional could suggest solutions appropriate to the situation.

The roofing companies experts at Total Roofing of Ft Worth can answer questions about residential roofing or gutters.

The replacement of a roof presents the perfect opportunity to update vents, but vents can also be installed without redoing all the shingles if they are still in acceptable condition.

Modern homes typically have a ridge vent. This is an opening, protected by shingles, that goes along the entire roof line. Because heat rises, hot air will go out the ridge vent at the top but only if a supply of fresh air can flow into the cavity from below. Vents that can provide this inflow are soffit vents, gable-end vents and in-roof vents. Soffit vents work the best because they are located at the very bottom of the roof.

If one or more of these vents are in place, but ventilation remains insufficient, it could be because there are not enough vents. Another possibility is that the vent system has been blocked by improperly placed insulation. A roofer could fix the problems by installing new vents and clearing blockages. Sometimes a power fan to promote airflow can be placed in an attic.

The addition of gable-end vents or in-roof vents could also be an option. Gable-end vents look like small louver doors on the ends of a house. In-roof vents look like small flat boxes that are placed on the roof. They sometimes include fans to speed air movement.

The design of a home will determine which ventilation system will work best. Retrofitting a home with better ventilation will improve its energy efficiency and reduce stress on its critical structures.

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