Skylight / July 12, 2018 / Odo Vaillancour
Roof skylights bring in natural sunlight into your house and add to the style of your house. But those who install it are always worried about one problem and that is a leaking roof skylight. It cant be denied that there is increased risk of a leak but if you install and seal your skylight properly you can make your skylight absolutely leak proof and secure. Skylights have a reputation that they always leak. But it is not so. You must not let this rumor stop you from installing a roof skylight that you have always wanted. There has been great progress in technology and techniques used in installing a roof skylight and if the skylight is installed properly there is hardly any chance of it developing a leak.
The acrylic dome is typically mounted in an aluminum frame which is in turn mounted on a box called a "curb." Once the hole is cut in the roof to the manufacturers specifications the curb is typically constructed on-site to raise the skylight above the level of the roof sheathing. Site-built or factory-supplied flashings are used to seal the roofing around the curb. Domed skylights are available in clear smoked bronze or other tints. Some domed plastic skylights are flush mounted which means that the lens piece and flashing piece are both made of plastic and then placed on the roof without a curb. The problem with this type is that they are loud and very susceptible to leakage.
For one thing skylights are positioned in such a way that they are inaccessible unless they are operated by remote. Even in cases of motorized skylights which are easily manipulated there are still some disadvantages that are inherent to skylights that are not present or minimized in windows. Vertical windows lose less heat by convection when compared to skylights. Also since windows are generally protected by overhangs or shrubs they lose less heat by radiation. On the other hand skylights are directly exposed to the sky. Thus they lose more heat by radiation. Proper insulation can reduce this heat loss to a large extent. In the summer season skylights are more exposed to the direct heat of the sun than windows.