People can live in a house and not know some of its components. You may not even know what a roof closure vent is and why you need it. This is part of a system of ventilation to allow air trapped under your roofing to be expelled. If you don't have a system to let this trapped air flow out, you may be letting your house in for future problems.
Those of us who have no idea what this ventilation device does or why we would want one should understand a few basics. A roof is designed to withstand extremes of weather and temperature. People have traditionally used dark materials in cold regions (to attract and hold heat from the sun) and light-colored ones in hot ones, to send the sun's heat back up. This handles temperatures, but there are other considerations.
Apparently air inside your house rises into the space under the roof, bringing moisture with it. Warm air holds more moisture than cold. So if warm air rises, and the roofing is cooler, droplets of water form on the underside. If the roofing is vented, outside air flows in and disperses this moisture before it can damage insulation, shingles, or metal.
'Soffit' vents under the eaves of the house let air in. The closure vents higher up let air out. Wind moving across the top of the building is the activator of this exchange. As air flows out, moisture is taken out as well, before it can condense and cause problems of mold, rot, or corrosion. The process of venting a ranch-style home is fairly easy. Modern, many-gabled roofs make the process a lot more complicated.
There is another problem. Openings in roofing are great ways for bugs, birds, small climbing rodents, and the elements (rain and snow) to get inside your attic. Therefore you need vents with screening or baffles to keep them out. Well-designed venting systems keep everything out but air.
Check out the easy-to-install one piece units online if you need to vent an existing structure. They are simply stuck into place using their own adhesive strips. It's easiest to do this kind of installation at construction, when vents can be installed along the ridge of the house. Vents should be made of durable materials and can be guaranteed to last as long as the roofing itself.
Some people say that venting is not necessary or even counter-productive. Apparently many roofing manufacturers see value in the practice, though; not venting your roof can void the warranty. Venting is easiest during construction, although individual units can be installed at any time. Care must be taken that intake and outflow are balanced. If not enough air can be drawn in from outside, air will be pulled from the interior of the home. This increases energy costs.
It's a simple enough idea: Draw wet, warm air out, pull fresh, drier air in. At the same time, keep crawling or flying things out, as well as rain and snow.
Those of us who have no idea what this ventilation device does or why we would want one should understand a few basics. A roof is designed to withstand extremes of weather and temperature. People have traditionally used dark materials in cold regions (to attract and hold heat from the sun) and light-colored ones in hot ones, to send the sun's heat back up. This handles temperatures, but there are other considerations.
Apparently air inside your house rises into the space under the roof, bringing moisture with it. Warm air holds more moisture than cold. So if warm air rises, and the roofing is cooler, droplets of water form on the underside. If the roofing is vented, outside air flows in and disperses this moisture before it can damage insulation, shingles, or metal.
'Soffit' vents under the eaves of the house let air in. The closure vents higher up let air out. Wind moving across the top of the building is the activator of this exchange. As air flows out, moisture is taken out as well, before it can condense and cause problems of mold, rot, or corrosion. The process of venting a ranch-style home is fairly easy. Modern, many-gabled roofs make the process a lot more complicated.
There is another problem. Openings in roofing are great ways for bugs, birds, small climbing rodents, and the elements (rain and snow) to get inside your attic. Therefore you need vents with screening or baffles to keep them out. Well-designed venting systems keep everything out but air.
Check out the easy-to-install one piece units online if you need to vent an existing structure. They are simply stuck into place using their own adhesive strips. It's easiest to do this kind of installation at construction, when vents can be installed along the ridge of the house. Vents should be made of durable materials and can be guaranteed to last as long as the roofing itself.
Some people say that venting is not necessary or even counter-productive. Apparently many roofing manufacturers see value in the practice, though; not venting your roof can void the warranty. Venting is easiest during construction, although individual units can be installed at any time. Care must be taken that intake and outflow are balanced. If not enough air can be drawn in from outside, air will be pulled from the interior of the home. This increases energy costs.
It's a simple enough idea: Draw wet, warm air out, pull fresh, drier air in. At the same time, keep crawling or flying things out, as well as rain and snow.
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