Fireproof spray foam insulation materials come in five primary forms. These include chopped fibers, foam, fibrous mats and textiles, board or block insulation, films and foils. The fire resistance of each form depends largely on the material of which it is composed.
Chopped fibers are loose and flow into holes and tight places more readily. Loose fibers can also be pressed into a mat or cloth-like form by weaving, knitting, braiding or pressing with an adhesive. Foam insulation is made from low-density plastics and other polymers and are often sprayed on vertical or overhead surfaces in buildings or inside machines or electronics. Block and board insulation is made into sheets, strips, plates or custom shapes. Films, foils, laminates or ceramic composites increase fire resistance in close spaces.
How to Remove Expanding Foam Residue With a SolventThermal Spray Foam Insulation is used in buildings, and refers to the application of thermal insulated materials, which are applied using various spraying methods, into a roof space or wall cavity to prevent heat loss. The application of this process is normally completed within two days. Thermal spray foam insulation does not particularly address ventilation or sound proofing issues. It simply refers to the insulating materials being used to slow heat loss. The effectiveness of it is usually evaluated by its R-value, but this does not take into account construction or local environment factors. Thermal spray foam insulation is easy to apply. Foam insulation is sprayed onto or into the underside of the roof within the attic/loft space, and dries to a rigid foam. Thermal spray foam insulation is an important factor to achieving thermal comfort for the buildings occupants, and thermal spray foam insulation reduces unwanted heat loss, and reduces the energy requirements of cooling and heating systems. Thermal spray foam insulation simply refers to the insulating materials being used to slow heat loss. One of the most effective types of insulation spray is polyurethane foam, which has been specifically formulated for use within the insulation industry. This type of foam is a very cost effective insulation material, and works in two ways by keeping the desired space or area warm in winter and cool in the summer. It can also help with the problems that arise from condensation, and is an ideal solution for ambient and cold storage. Polyurethane foam is easy to apply, lightweight in structure and can cover large areas quickly and efficiently, making it a very cost effective solution for many commercial requirements. The application of foam spray uses a rigid polyurethane foam which sprays to a fine cellular structure with high compressive strength and good adhesion and insulating qualities. Many of these foam spraying techniques and materials do not contain or use any CFCs. Thermal spray foam insulation will adhere to most structures and other materials such as fibre, sheet metal, cement, asbestos sheeting, concrete and steel. When sprayed it can expand to over thirty times it thickness. It is lightweight in structure, weighing only three kilos per square metre at a depth of fifty millimetres. (approx) Insulating a building with this method will help to keep it warm in the summer and cool in the winter, reducing temperature control costs and providing a dry and comfortable environment for staff and workforce, and controlled storage for stock and materials.
How to Paint RopeAfter 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 Remove Foam Sealant From My FingersAlthough 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.
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