Are there any special considerations for ventilation with a metal roof?
metal roof
Metal roofs can collect moisture from attics that are not properly ventilated. This moisture can damage the underside of your roof and reduce its lifespan. Ventilation is essential to prevent heat and moisture buildup, as well as energy waste that occurs when attic air is not regulated properly. The best ventilation strategy is one that includes intake and exit points that are continuous along the ridgeline of your roof.
Ridge vents allow hot air to escape from your attic, lowering the overall temperature of your home and helping you save on energy costs. They also help your roofing materials last longer by preventing excess moisture that can cause rot. These exhaust vents are installed at the peak of your Metal Roofing Barrie and run along its ridge line. They can be combined with intake vents found in your soffit and eave for optimal attic ventilation.
When properly designed and balanced, a ridge vent system allows air to escape from the ridge while drawing fresh air in through your soffit vents. The amount of air entering your attic through soffit and eave vents should be equal to the amount of air that exits the ridge vent in order to prevent condensation from building up on your roof deck. This is known as Net Free Area or NFA and is an important consideration when choosing a roof ventilation solution.
Are there any special considerations for ventilation with a metal roof?
The roof eaves on your home are where gable vents are commonly found. They can function as an intake or exhaust method depending on the overall venting strategy used with your Barrie Roofing. Because a gable roof comes to a point at the top, it is ideal for shedding water, snow and other debris from the roof. Without proper ventilation, this moisture will build up in the attic space and cause issues like mold, dampness and rot.
These issues are amplified in the winter when moisture is trapped and refreezes on cold roof surfaces. Gable vents help prevent this by allowing warm air to escape from the attic and allowing fresh, cool air in. However, if you install gable vents too low on the peak of your roof, it will not provide a cross breeze which could lead to stagnant and stuffy indoor air. The solution is to use a gable vent that can easily be mounted at the peak of your roof and allow for a 360-degree flow of air.
Like other types of roofs, metal roofing relies on static ventilation to help keep the structure cool. This type of ventilation takes advantage of the natural tendency of warm air to rise and exit through vents located at the top of a building’s roofing structure, called the ridge. As warm air exits the ridge, cooler air is drawn in through vents situated lower in the structure—typically around the eave or at the soffit.
One of the best ways to encourage this movement is with soffit vents. These roof vents are effective at drawing in cool, fresh air and circulating it throughout the attic space. This helps to reduce the temperature and moisture levels in the attic, preventing mold and mildew growth and improving energy efficiency.
While metal roofs tend to stay cooler than many other roofing materials, the roof and attic still heat up on a sunny day without adequate ventilation. That heat becomes trapped and forces your air conditioning system to work harder, leading to higher energy costs and faster wear-and-tear. Aside from reducing energy costs, proper ventilation also helps prevent condensation issues. Unvented attics can produce moisture that contributes to mold, mildew and rot. These issues can cause damage to the roof and to interior living spaces.
Name : Barrie Roofing & Repair Contractors
Address: 279 Yonge St, Barrie, ON, L4N 7T9 P.O Box#23013
Phone: 705-999-7628