Homecroft 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 Fix Holes in Tree TrunksAlthough spray foam insulation as we know it today truly emerged in the 1980s, spray foam actually has its roots several decades further in the past, beginning with the development of polyurethane foam in the 1940s by Otto Bayer. Otto Bayer, an industrial chemist, actually began working with polyurethane in Germany during the late 1930s. This technology was brought to the United States in the early 1940s by David Eynon, the president of Mobay, a war effort conglomerate created from the partnering of two chemical industry giants, Monsanto and the Bayer Corporation. Although Otto Bayer worked for Bayer Corporation, he was not related to the company's founding family. During the 1940s, polyurethane polymers were used primarily in military and aviation applications. The production of war machines for the World War II conflict drove most of the applications of these high-grade plastic polymers for the duration of the war. It was not until the 1950s that polyurethane began to be used in home insulation. It was the invention of the "Blendometer" that allowed for expansion of polyurethane application to the home insulation realm. The Blendometer was the first machine able to mix components for the creation of polyurethane foam and was created by Walter Baughman in 1953. The Blendometer allowed for the strategic mixing of chemicals to create what Baughman called a plastic elastomer or an expanding foam. Liquid when applied, this plastic elastomer expanded into a thick foam and eventually hardened upon drying. Baughman's Blendometer was still a partially manual process, with humans tilting trays of chemicals to mix foam. While the machine did allow for the use of polyurethane in home insulation as well as in other home-related applications, like air conditioner insulation, it was still a technology in its infancy and one that made widespread use of polyurethane as a residential insulation material no less cumbersome. Polyurethane polymers were used in a variety of means throughout the following decades, with incredible advancements being made in the auto industry applications of the material in particular. However, it would be more than two decades before the foam would become widely used in home insulation processes. Building on Baughman's invention, the first dedicated spray technology machine was constructed in 1963 by Fred Gusmer. The 1960s and 1970s saw technological advancements which made spray foam's use in home insulation more easily achievable and affordable. It was also in the 1970s that the idea of the "super insulated" home emerged. Largely driven by the energy crisis of the 1970s, home builders and homeowners alike began to look for ways to improve the energy efficiency of homes. The crisis fueled advancements in technology that laid the foundation for modern spray foam applications. It was the development of advanced spray nozzle technology that allowed spray foam insulation to be used widely in home construction and improvement projects. The spray foam nozzle allows the foam mixture and the chemical responsible for its expansion capabilities to be separated until just prior to application. The spray foam mixture consists of several key components but it is the expansion chemical, isosynate, which is responsible for its easy application and expansive character. The application nozzle allows the foam mixture and the isosynate to be delivered to the nozzle through separate hoses, mixing only seconds before being sprayed. The spray foam arrives at its destination as a liquid but quickly expands into a foam substance and later dries into a hardened plastic upon curing. The 1980s and early 1990s saw a great deal of controversy within the spray foam insulation industry as different marketing schemes from various companies promoted the benefits of closed verses open foam insulation and as some companies tried to market water blown foam application processes. Though there has been much debate within the industry, R-value standards, used as a measure of determining energy efficiency, have cleared up much of the controversy. R-value ratings clearly define closed foam as the most effective means of making a home as energy efficient as possible. Closed cell spray foam has additionally been added to the list of building requirements for making homes in hurricane and earthquake zones more structurally sound. The improved stability of homes insulated with spray foam technology makes the use of spray foam a smart move for any homeowner regardless of geographic location.
How to Remove Foam Sealant From My FingersAfter long hours of searching you have finally landed in the right place. At last the elusive answers to questions on insulation and spray foam are here awaiting your approval. These aren't the usual newbie FAQ's. These are the 'technical' questions only the really savvy home renovators ask. No more intense bouts of frustration where you suddenly find you're banging your head on the keyboard. The real answers to the advanced questions are here, so say goodbye to impressions of little squares on the forehead. Does spray foam release any Volatile Organic Compounds (VOC)? Polyurethane foam is not considered to emit VOC's. However, during application some spray foams release VOC's through the process of discharge from the canister. After curing there should not be any further emissions. To be sure, check with your foam supplier. Can it be used to insulate underground water pipes? Yes! Work closely with the polyurethane manufacturer to determine the best method of application and the most beneficial kind of foam to use. Regional climate changes and projected temperature extremes will be a part of the decision making process. During application, be sure to prepare the trench properly so that no moisture is allowed on or in the foam until it has cured. Should fibreglass insulation be removed before applying it? Yes! Many contractors opt for leaving blown in insulation in an attic and spraying the foam on top. The problem that arises is ventilation and temperature control. More clearly, the temperature of the attic floor will be different than amidst the fibreglass and the temperature amidst the fibreglass will be different than above the spray foam. The job of the spray foam is to balance temperature and humidity with the environment so condensation is prevented. With an inner layer of fibreglass, where air flows, the conditions would be perfect for moisture formation. Does the surface where it will be applied have to be clean? Yes! Any oil or dust on the application surface will prevent the spray foam from adhering. For the typical attic in a wood frame home, a careful vacuuming job covering every nook and cranny will often be adequate. For applications where the surface is steel (or any other metal) it is even more important for the surface to be free of dust and oil. In some cases where the steel is very new, a coat of primer will be required. Many spray foam manufacturers offer a simple rule: if it can be painted, it can be spray foamed. Does an attic need to be vented if spraying foam on the rafters? That depends. If you are applying the spray foam to the roof deck and gable walls, then you want everything under that surface to be a part of the temperature conditioned space. Vents in an attic with insulation above it would be much like have open windows year round - a total waste of money. If you are applying spray foam to just the attic floor, then the conditioned space is below the attic floor. Vents will be necessary for preventing excess humidity. Is weather a factor when applying it? Water is the most important consideration, either as rain or condensation. If there is any moisture present on the application surface, the spray foam will not adhere. Most of the time the problem will be seen right away, and the installer can stop the job until the surface is dry. In the case of applying spray foam to the exterior of roofs and walls during the construction process, wind will be a major factor as well. Overspray carried by wind can not only affect surrounding surfaces, it can mean a loss of yield. Ambient temperature plays a role as well, albeit in extreme conditions. Exceptionally hot temperatures can cause the foam to not hold shape, cause risk to the installer in enclosed hot places and even risk explosion of the tanks holding the polyurethane. Freezing temperatures, such as in northern Alaska, may cause the applicator to cease working altogether. The substrate temperature is a factor as well. For unique situations such as these, it is best to consult with the manufacturer to see how best to proceed.
How to Upholster Bar StoolsOne 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!