Camby 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 FoamIs polyurethane foam, in its sprayed form and as an insulator, actually environmentally friendly? What does 'green' and 'environmentally friendly' mean? All excellent questions, and all of them are not answerable in a word or two. Let's begin with defining the concept of environmentally friendly. According to the International Organization for Standardization (IOS) the term is too vague to be meaningful. The US Environmental Protection Agency (USEPA) agrees, but only to a point. The USEPA created the international Energy Star program in an attempt to provide the manufacturers of goods with a voluntary labeling system for promoting energy efficient products. In the 1990's when the program was started, it was only applied to appliances and electronics. However, today entire homes and home offices are able to gain Energy Star certification. The only criteria is the building must use 15% less energy than a standard home built to the 2004 International Residential Code. How does a home achieve that rating? The things at the top of the list for getting an Energy Star rating are not surprising: insulation, high performance windows, tight construction and ducting, energy efficient cooling and heating systems and Energy Star certified products (appliances, lighting, water heaters). Now, in reference to insulation specifically, its efficiency is measured according to R-value. An R-value is a mathematical calculation which produces the level of thermal resistance a building has. For the average North American home insulated with traditional fiberglass batts, R-value sits at between 3.1 and 4.3 per square inch. Blown in fiberglass insulation has a typical R-value between 2 and 4 per square inch. According to the US Department of Energy, the same home insulated with spray foam polyurethane insulation will have an R-value between 7 and 8 per square inch. Clearly a home insulated with spray foam would be well on its way to achieving an Energy Star rating, even without installing LED lighting and thermal windows. When a building is insulated with polyurethane foam, the costs of heating and cooling will undoubtedly be vastly reduced. Many spray foam manufacturers report that energy costs can be reduced by up to 40%; a claim that is both highly likely and easily attainable. With such a diminished use of energy, there is less demand for petroleum-based products and fossil fuels, resulting in a smaller carbon footprint being left on our planet. We are half way to answering our title question, is spray foam insulation really green? Now we know its immense potential for energy savings, but what about the manufacture of the foam itself? In the case of spray foam, the two substances that come together to produce the foam must remain separate until the time of application. Those two things are polyol (a naturally occurring alcohol) and diisocyanate (a group of organic compounds derived from plant and animal materials). When they are brought together with water, an exothermic reaction takes place producing the polyurethane foam. Although the foam is produced from organic substances, it does not breakdown over time - a good thing for insulation applications, but where does it go when it is no longer needed? When the intended use of the polyurethane foam has been completed, it can be re-purposed and recycled. For example, the Polyurethane Foam Association has pioneered a program in the US in which spray foam insulation and products meant for the landfill are collected and made into carpet foam underlay. The program is so successful that 80% of all carpet underlay used in the US is made from recycled polyurethane foam. The reduction in waste going to landfills is incredible! So, is spray foam insulation really 'green'? Yes, it is. Polyurethane foam is produced in an environmentally friendly way in that it is created from organic compounds using very little energy or water, prevents the excess use of fuel in heating and cooling homes and is entirely recyclable for other uses.
How to Remove Spray Foam InsulationPolyurethane 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 Spray Foam InsulationOne of the most popular techniques being used in roof insulation and roof repair is the spray foam roofing system. This technology has been around for many years and has been growing in popularity because of the many outstanding benefits and advantages over other types of roofing applications. When it comes to the foam material being used, most roofing contractors recommend polyurethane foam. To give you an idea what polyurethane foam is, it is a combination of two liquid elements- an isocyanate and polyolresin. They undergo a process of mixing according to its specified ratio which is normally one-is-to-one. The technique is applied by professional applicators using a team of spray foam equipment like a proportioner, heated hoses, transfer pumps and spray gun. Polyurethane foam is very flexible and versatile and can be applied to any type of roofing system. When the liquid polyurethane foam is sprayed over the affected roofing area, it expands and solidifies in just a matter of seconds. What happens next is you see a seamless and durable protective layer. The succeeding procedure is the application of another protective coating like an elastomeric type of coating. That is how simple sprayed polyurethane foam or SPF roofing system is. However, it is risky to undertake this procedure yourself if the extent of roofing repair and insulation is a bit complex. Adequate training, proper technique and application, and years of experience are the credentials brought in by the team of professional roofing repair and insulation contractors. It is the quality of work which will determine if the spray foam roofing will give the desired effects. If it is only the labor cost component you are trying to save when you decide to make it a do-it yourself job, you have to evaluate the situation thoroughly. On the other hand, if the roofing problem is a simple one and you are confident that you can do the procedure yourself, then go ahead. Having the basic technical know-how and skills and the energy are enough to accomplish the job. When it comes to DIY spray foam insulation kits, there are many types available in the market. The most common and affordable are the spray cans. You can shop in your local hardware stores for sealants and foam sprays and the price range depends on the features of the kits. You may want to purchase a kit with a pressurized spray nozzle or spray gun with extra nozzle tips and foaming chemicals. Before you buy what you need, try to familiarize yourself with the best type of kit by learning the appropriate ingredients and other matters such as r-value and other resistance rating. As soon as you are able to buy your kit, the next step is to see to it that the area to be worked on is perfectly clean and free of any debris. Just follow the instruction guideline in the manner of spray technique. The actual schedule should be done when you believe that the weather won't be a problem. For an ideal application, you have to do the spray foam roofing at the right temperature. If your roofing needs an extensive protection and insulation, it is to your best interest to assign the work to the professionals. Do your homework as to which type of foam material you consider the best. If you choose the SPF system together with a reputable elastomeric brand of coating, all you need to do is to finalize a deal with a dependable roofing and thermal insulation contractor for a total project cost within your budget. The bottom line is your house will enjoy proper room temperature during hot or cold days, some sound and noise reduction, wind lift, flame and weather resistance. There are other benefits you will enjoy not limited to reduced energy bills. In effect, the project investment you make is a self-liquidating one. Because of lower energy consumption, you are also helping out in the government's energy security and environmental concerns. What is of prime importance is the big picture. Just visualize the peace of mind, comfort and enjoyment spray foam roofing will provide to your family for many years to come!