Traders Point The open cell spray foam insulation contains a density of 0.5lb. per cubic foot. The greater the density of the foam the heavier, or stronger it will become. This particular type of polyurethane foam is referred to as “Open Cell” because of the nature of the chemical reaction during the installation process. When the polyurethane foam is being applied the tiny cells of the foam are broken causing air to fill the “open” space inside the material, resulting in a soft or spongy material. The open cell foam carries an R-Value of 5 to 5.5 per inch (R-Value is the measure of thermal resistance, which can be found by identifying the ratio of the temperature difference across a spray foam insulator and the heat flux). 0.5lb. foam products use significantly less material than 2lb. foam products do when completing the same sized job, making them attractive to an individual concerned with conserving the foam material. Due to the fact that open cell foam requires less material, the cost of the project is much cheaper than it would be if you were to apply closed cell foam.
How to Remove Expanding FoamPolyurethane foam (PUR foam) had been widely used in most household and building installations. There are two types of polyurethane depending on how it is applied, the rigid form and the spray foam. Spray foam application is usually cheaper though less effective. Polyurethane foam is an insulation material with high thermal resistance because of the low-conductivity gas present. It is available in liquid formed but is applied using a spray equipment. HCFC or hydro chlorofluorocarbons are the usual gas used with an R-value range of R-7 to R-8 per inch. This R-value deteriorates in time through the process called thermal drift. As the low conductivity gas escapes through the air, gas molecules present in air replaces the gases in the insulation. This phenomenon usually starts after 2 years of installation. While the rigid board structure is more effective in insulating, application of spray polyurethane foam insulation relatively is easy since it molds to the form of the surface. Because of that it is also called, foamed-in-application. Most of the spray foam produce today has non-CFC (non-chlorofluorocarbon) gas as their foaming agent. While these non-CFC foams are less effective in insulation, they pose less threat to the ozone layer. It is also effective in a relative large range of temperature. An R-value of R-6 to R-6.5 per inch is normal for high density closed-cell PUR foam, about 32 kilograms per cubic meter (kg/m3). Low density open-cell PUR foam has about 8 kilogram per cubic meter (kg/m3). This has been noted to be more flexible than the regular polyurethane foams. Carbon dioxide as also been used as a forming agent for some low density foams. Spraying the polyurethane foam requires specific equipment and personnel using them must be properly trained. High density foams have usually slow-expanding capabilities. Low density foams expand rapidly when applied to walls' cavity sealing them almost instantly. However may cause over-expansion in the walls' surfaces creating damage. Using spray polyurethane foams in home insulation benefits the owner in many ways. Non-CFC foams are eco-friendly have no formaldehydes that may damage the ozone layer in the atmosphere. It can greatly eliminate air or wind infiltration the household. Air seeping through cracks or opening in the walls or roofing can increase convective air currents in attics or walls and also increase moisture and condensation rate inside the household. Since it is a very effective insulation, less energy can be used in terms of cooling and heating the household, while maintain the preferred comfort zone inside the house. It also passively strengthens the walls they are applied to. It has also long life span of more than 10 years which can be extended further by recoating. Installing or using spray polyurethane foam insulation, however must depend and customize to fit the home's building lay-out, cost of effectiveness, and even the climate wherein the home stands. While these considerations can be easily dealt with especially for someone with high budget, application of spray foam polyurethane, for best results must be left at the hands of experts.
How to Remove Foam Sealant From My FingersOne of the most important keys to reducing your heating and cooling costs is having your home well-insulated. So what is the best insulation for your home? Spray Foam Foam insulation has two forms: Open and closed cell. Both are made from a polyurethane material and have different propellant agents added. Some are made from biodegradable materials, such as soybeans, to make the off-gases friendlier to the environment. Foam is probably the best insulation for blocking air infiltration combined with high R-value. Installed by a professional, the price of spray foam varies depending on the thickness of the walls and type of foam. Spray foam insulation is probably the best overall insulation on the market if you can afford the cost. Foam insulation lowers your heating and your cooling loads when installed correctly. Additional benefits are elimination of air infiltration, keeps out dust, mold and allergens, and does not sag or deteriorate. Open cell foam is used more in residential applications. It is less expensive to install and is easier to work with after it's in place. Open cell allows water to penetrate, so it makes an excellent roof deck insulator. If water is allowed to penetrate, you can locate roof leaks before the decking deteriorates. Biggest benefit of open cell is heat transfer in sunny locations. It takes approximately 36 hours of sun to penetrate through 8 inches of foam. This is also true for walls. So when the home is cooled, it will stay cool. The warranty of the roof material is not voided with the installation of spray foam insulation. Closed cell foam has a much more structural component to it and can support some weight without compression. Closed cell does not allow water to penetrate and is an excellent insulator for basement and crawl walls where water could be a problem. Closed cell foam has a higher R-value per inch but is very ridged and tough to work with after installation. It is most often used in commercial applications. However, it has its useful applications in homes. Foam insulation keeps mold out of walls. Mold occurs in walls with batt insulation because of "thermal loop effect". This is where the heat penetrates the exterior wall, coming in contact with the cooler interior surface of the drywall, causing moisture to form. Moisture above 25% can provide an environment for mold to grow. Spray foam blocks this heat transfer and has no air gaps in which moisture can form. One way to combat the higher cost of spray foam is to combine a couple of inches of closed cell foam with fiberglass batt insulation installed over the foam, getting the exceptional air-blocking value of foam, with the high R-value and lower cost of fiberglass insulation. Spray foam insulation costs more than fiberglass batts, but it also has approximately twice the R-value of typical fiberglass batts insulation. By combining the two you will get the best of both. Foam insulation is also particularly good for remodeling projects when there is only easy access to the basement or crawl space and the attic. By blocking the air flow from the top (attic) and bottom (crawl or basement) you stop the draftiness that some older homes have, thus making the home more comfortable. A more comfortable home is what we all are looking to achieve. Spray foam can give you warmth in the winter and cooling in the summer when combined with the appropriate HVAC system. These systems can be smaller in size when your home is better insulated with less air infiltration.
How to Remove Spray Foam InsulationIf you are in the process of building a new home or renovating your existing home then finding the ideal insulation is one of the decisions that you will have to make. There are several options available to you. Some products are more affordable in the short term but don't always provide the best long-term insulation solution. Other products may be more expensive to purchase but can save you hundreds of dollars on your utility bills over time. It is useful to compare and understand the different types of insulation so you can make an informed decision that will benefit you in the long run. What Is Spray Foam Insulation? Spray foam is a product that has been around for some time. It is one of the more efficient home insulators and available in a variety of types to suit different applications. It is made up of at least two compounds. Independently, the components can be stored for a relatively long period of time; however, when the compounds are mixed, they react and form foam that needs to be applied immediately. The foam is sprayed on to a surface area and after a short period of time, it sets and hardens. The result is an effective insulating layer that is highly durable. How Does Spray Foam Compare to Other Types of Insulation? Insulation is rated in terms of an R-value. The higher the R-value, the higher the density of the insulator and therefore the higher its effectiveness. It is considered a good insulator because of its comparatively high R-value. Open cell spray foam which has the lowest density has an R-value of 4. Most other types of spray foam have an R-value between 6 and 7.7. Compare this to fiberglass batting which is another common form of insulation that only has an R-value of 3.5. Comparatively speaking, it therefore has an average R-value that is almost double that of fiberglass batting. Another benefit of spray foam is that the application process is much easier. It can be applied to most surfaces regardless of whether they are horizontal or vertical. In all instances the foam can simply be sprayed onto the area that needs to be insulated. There is no measuring and cutting of mats or the need to overlap insulation. It is easy to apply in a uniform manner. It is also generally more durable than other forms of insulation. It does not wear down as easily and therefore protects and insulates your home for a much longer period of time before needing to be replaced. What Makes Spray Foam So Efficient as an Insulator? One of the properties of spray foam is that as it is applied to a surface area, it continues to expand. This means that the foam can get into cracks and crevasses and provide an airtight and watertight seal. It also hardens in a relatively short period of time which means that the application process can be completed in a relatively short space of time. Compared to other types of insulators, its high density is perhaps its most important characteristic. It keeps cold air out and warm air in during the winter months and helps to effectively insulate your home. How Else Does Spray Foam Protect Your Home? Certain types of spray foam have microbial agents as components. These microbial agents help prevent the growth of mold in your home. If you live in a region that has consistently high levels of humidity then your home can be susceptible to mold infestations. Often mold goes unseen and undetected until it is quite severe. This can affect the health of your family. Having an insulator that prevents mold growth can provide a healthier home environment. Spray foam is highly durable. It also can form a protective barrier in your home against vermin and insects. Rather than having to call exterminators, you can pre-empt the problem by insulating your home with this product.