9 Things You Must Know About Roof Insulation



After installing your new roof, you might think the first thing to do is to begin insulating the attic. Although insulating your roof is important, there are things you must consider first in order to achieve consistency and efficiency. If the attic is not insulated in a consistent manner, you will end up with cold spots. If you are not efficient, your roof will perform poorly, allowing heat to escape in the winter. Additionally, from a perspective of safety, if you fail to follow the proper procedures, you could end up with health or skin problems.


  1. Respiration


Broken fiberglass particles can be lighter than air. As such, you can easily breathe in these particles where they can become embedded in your lungs, which some researchers suggest can lead to mesothelioma. What researchers agree on is that exposure to fiberglass can lead to lung damage and chronic breathing problems.


  1. Skin protection


Long sleeves are a must when installing roof insulation as are gloves. For added protection, you can gently tape your sleeves to the base of your gloves to create seamless protection. Similarly, you should ensure your pants cover the top of your boots and that your socks extend up the calf to protect your shins. Again, you can tape or blouse your pants with a loose rubber band or with tape. Without the proper covering, bits of fiberglass can collect along the inside of your shirt cuffs and along the top of your ankles, causing scratches or rashes.


  1. R-value


The R-value for insulation indicates how well insulation will do its job. Insulation with higher R-values will provide greater protection. You can purchase insulation that is rolled, pre-cut, or sprayed. Whichever you buy, you should consult a climate chart for your region to determine the R-value your roof requires.


  1. Cracks


Although you do not necessarily want to create an air-tight seal in your home, you do want to seal airways that allow heat and cool air to access your roof. Airflow into your attic can affect humidity levels, which can affect your roof and make your insulation less effective. Consequently, you should wrap plumbing pipes, insulate access doors, and seal chimneys with fire-rated insulation.


  1. Eliminate gaps


When insulating your roof, gaps can expose wood to humidity. Such exposure can lead to mildew, mold, and rot. Because installing insulation can be uncomfortable and complicated, you can save time and hassle through the use of insulation batts, which are pre-cut pieces of insulation. For the best batts, simply conduct an online search of “ceiling batts Sydney” for options to meet your roof needs.


  1. Rafters


Too much insulation in the spaces between the rafters and beams can actually make the beams and rafters in your roof less efficient than the surrounding insulation. When this happens, heat will escape through the rafters, and you can see this in action when it snows and the snow melts in precise patterns that match your rafters. To combat this, some contractors add some insulation over the surface of the rafters.


  1. Joints


Specific areas that require caulking include rim joists. If you simply cram insulation between the joists, you could end up with a drafty attic.


  1. Leak detectors


You can make your roof insulation more efficient by using a leak detector. The detector will use infrared rays to detect temperature differences. The location of temperature differences will indicate areas in your roof that need more insulation.


  1. Cutting


Even if you buy pre-cut batts, you might have to then cut them to shape in order to fill all the nooks and crannies in your roof. When you do this, use a fresh blade in order to reduce shredding, which can send fiberglass particles flying into the air.


Additionally, you should cut the insulation precisely to match each space. Obviously, insulation that is cut too small will allow air to flow in and out of your home. However, if you cut the batt too large, you will have to fold or compress the insulation to make it fit. Insulation works because of how it captures air within the material. If you compress or fold it, it works much less efficiently, and you will end up with hot or cold spots in your roof.

About the Author:

Jim Pulman has extensive knowledge and experience in Home Building, Construction, and Design. He writes articles in his free time and partners with content creators to share his expertise with the online community.