What Are The Advantages Of Rigid Foam Insulation?
Rigid foam insulation can insulate unfinished building and varies every day products. There are three types they are; polystyrene, polyisocyanurate and polyurethane. I will talk about each individually so you’ll have a better understanding when installing attic insulation.
The first type of rigid foam board is polystyrene, or bead board. Because beads expand to fit it’s often used in every day products. Its density can vary according to type and amount of beads used. Bead Spacing allows for water to absorb so a vapor diffusion retarder is needed.
The second type of rigid foam insulation is bead board. It is made in such a way that bead expand to fit, producing a better insulated area. This type of insulation is often found in every day products. Because of the bead spacing moisture is allowed to be absorbed.
The third is polyisocyanurate and polyiso foam boards this product has varies strengths allowing it to maintain shape and stability. It can be used in extreme high, low temps effectively, making it ideal for installing attic insulation. When used with aluminum foil facings makes a perfect moisture barrier.
There are some things that you need to know before using rigid foam insulation. First we will discuss flame retarder. This product takes a lot to ignite but once it does it will burn steady. It will also smolder for some time. Safety regulations require you to use flame resistant material like panel, dry wall, or gypsum wall board over the insulation. It also deteriorates in direct sunlight so if you are installing attic insulation it needs protected with acrylic silicone, rubberized paint asphalt, roofing felt, or tar.
Bugs often use rigid foam board insulation as a home it’s recommended to use an insecticide treated product when doing floors and basement walls. Applying insulation on the interior walls also helps with reducing bugs. If you install on the interior you need a vapor diffusion retarder.
Rigid foam insulation soaks in and traps moisture. This could easily cause mold and wood damage. To prevent this you should use a vapor diffusion retarder especially when installing attic insulation.
When installing attic insulation, rigid board insulation can be an effective, if done properly. If you decide to install insulation yourself be sure that you know how to install this product, safety precautions and building code regulations.
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