what does roof fan do?

what does  roof fan do?
the correct design and construction of the ventilation system is very important. roof design should provide plenty of air space for insulation and air flow under the roof and eaves. and a properly designed system precisely balances the intake and exhaust ventilation under the roof so that the attic is somewhat pressurized, preventing conditioned air from being sucked in too quickly from the vents, thus increasing heating and cooling costs.
 roof fan which roof grilles are used?
a few common types of vents used in gable roof vents, seen on the side of a beautiful home below the roofline, include static vents, ridge vents, and gable vents. static vents are horizontal openings that are basically air-covered holes in the roof that allow air movement to occur.
ridge vents run along the summit of a roof. this type of ventilation provides an external baffle to increase airflow and protect your home from rain and snow. triangular vents are located at the ends of the attic and can be used with other types of vents.
 ınsulation and attic ventilation
ıf your home is properly insulated, it will work with your well-designed roof ventilation system to keep your energy costs low. properly placed and installed insulation prevents unnecessary discharge of heated and cooled air that makes your home comfortable. your insulation will keep the conditioned air in your living space where it belongs, while your ventilation system will only circulate the roof air and ensure it is properly ventilated with unwanted humidity or extreme summer heat. be sure not to pile items in the attic on top of the insulation. this can prevent it from doing its job and add to your heating and cooling costs.

maintaining your  roof fan system
your roof ventilation system along with your roof should be checked at least every few years. check for weather damage such as cracks, loose vents, or cracked or missing tiles around the vents. look for anything that could block ventilation, such as leaves and other debris. ıt's a good idea to check the inside of your attic or roof deck for moisture damage. also, inspect your attic insulation to make sure it is in good condition and properly placed so that your home is well insulated against outside temperature changes.