Could the industry of the polyurethane foam face new energy and environmental challenges that arise? Many believe yes. The effectiveness of polyurethane foam as insulation system / air barrier or as a complement to other insulators, in fact, overcomes most of the minimum standards imposed.
In Canada, Quebec has always been a leader in the use of polyurethane foams splash. They are in the traditions of construction for more than thirty years. It's in Quebec that he applies the most and that is the majority of installers, followed by Ontario and British Columbia.
The presence of suppliers in the halls of residence, the withdrawal of insurance companies in connection with problems of mold in the basement and the restoration of an aging housing stock are all factors contributing to the popularity of sealing technology of the envelope in the polyurethane foam. This material is becoming the norm in some applications, such as the installation of solariums and spas or insulating below balconies and crawl spaces. Architects and building inspectors often recommend this for optimizing the performance of existing buildings or the construction of luxury houses.
Polyurethane foam insulation is the most effective and most efficient available on the market. It provides a return that is higher than all other types of insulation. It is a process whereby two liquids are mixed and sprayed on surfaces to be insulated. Once the product comes in contact with the surface, it rapidly inflates and becomes solid in a few seconds. Since this product instantly inflates, it is possible to apply it to all thicknesses from one (1) inch. It adheres well to most building materials. This pare-air/pare-vapour insulation product can be used alone on a surface without having to add an air barrier and an additional vapour barrier. The thermal resistance of the polyurethane foam is the highest of all insulation products on the market, with an R factor of R-6 and R-7 per inch. The product, due to the fact that it is sprayed, the property has to leave no seal, thus preventing heat loss and infiltration of outside air. Finally, the polyurethane foam adheres to the surface seeping down to the smallest cracks and leaving no film of air between the insulating material and its substrate. Moreover, it is possible to prevent any form of condensation between the insulating material and the surface. The rigid polyurethane foam sprayed provides an insulation system continues, with the highest R factor per unit thickness. It goes without saying that the polyurethane foam offers a performance that cannot be achieved with conventional materials. You realize savings in energy costs, while protecting your building against premature deterioration.
The application must be made on a dry surface, clean and free of oil and solvent. The temperature should be between -10 ° C and 40 ° C. The application of polyurethane sprayed must be made by certified applicators with competency cards issued by the CUFCA. In this way, you have the assurance of work done in accordance with strict standards and good quality polyurethane. To be sure, ask the applicator to show you his card, since they must hold in their possession at all time.
According to the National Building Code, all plastic foam used in a building should be protected against fire. It is recommended to use a thermal barrier Monokote Type Z-3306, pursuant to Article 220.127.116.11 and 18.104.22.168 of the National Building Code and the Code of construction of Québec.
The products from BASF, Walltite and Enertite, and those of Demilec, Airmetic 0223, Airmétic Soybeans and Sealection 500, are the only ones available on the market today in the categories of foam at high and low density system used in insulation / air barrier. Without incentives, and because of their higher costs, general contractors are slow to adopt them, preferring intermediate products that are less expensive.
Provided that the application should be made by qualified installers (members of the CUFCA or program more efficient Still BASF Canada), the use of polyurethane foam provides an air barrier far beyond the requirements of the Code Construction of Québec (CCQ-95), a high-performance thin insulation (R-6 / 1 inches) and an effective vapour barrier. It is a certified product anti-moisture. According to BASF, it provides a monolithic surface adhesion, since there is no air space between the insulating material and the substrate.
In the residential sector, some manufacturers use locally to seal the walls at the junction of the roof and the entire beam belt and smooth external. The polyurethane sprayed is also an excellent insulator foundation from the interior. Plyurethane between the amounts of a wall, it can then be covered with gypsum. Polyurethane directly on a concrete wall, it must be covered with a thermal barrier type monocoat 3306 fire retardant. In the outdoor spaces as in an attic, it may remain uncovered.
On the outside, it is enough to pump 1 inch of polyurethane foam between the supports of metal siding or pick to create a waterproof system. On believes it takes an hour to cover about 600 square feet of one-inch foam thick. There is no scrap of glue or solvents and scrap panels. Only polyethylene masking will be discarded.
According to Andre St-Michel, manager of the BASF site in Montreal, Canada, "the rigid polyurethane foam sprayed medium density" is a very unique product normed and very safe, which covers all the essential functions of the envelope. It provides all of the benefits of adhesion and the highest coefficiency of thermal resistance per inch.
If its conditions are met, the product is ideal insulation foundation by the interior and the insulation of exterior walls to prevent air leakage and damage caused by the condensation of water on the vapour barrier. By combining the properties of air barrier, vapour barriers and thermal insulation all-in-one, polyurethane sprayed completely eliminates thermal bridges that may have an impact on the outer envelope.
Combine cellulose and polyurethane
Cellulose type II or stabilized cellulose is a product with the properties of cellulose, adding an adhesive natural water-soluble. According to Dino Mariotti, director of sales and technical services for Igloo cellulose, cellulose stabilized non-combustible also serves as an air barrier and acoustic. Combined with a coating of polyurethane foam applied to the exterior of the building, it provides a very high insulation level.Top of page
Injection de laine cellulose
Firewalls are to seal the spread of fire and smoke to a portition or a component of a building, such as the joint between floor and wall, or even a floor mechanical and piping.The products used are incombustible wools with caulking specific products. The while upholding the strict national standards set by the Building Code. In the commercial, industrial and institutional, these tasks are performed by workers trained accordingly. Our main suppliers
The fiberglass insulation is a product widely used in construction. The fiber is designed from a mixture of glass across the centre of a cylinder hole, which runs at a very high speed. It is renowned for its thermal properties. It is used especially for insulating entretoits. Isolation At Ottawa, we use the fiberglass blown, also known as blown wool. Wool can get blown insulation continuous seamless. It can be applied to all thicknesses according to your specifications.
The wool insulation blown is a process by which to apply wool in entretoits, between-floors and walls, with a pneumatic equipment and a hose. This technique has been used for over 50 years and has long won his lustre in the construction industry. Wool blown provides uniform coverage, seamless, no matter the surface, even the most irregular. It meets all the cracks and all joints of the structure thus eliminating, and definitively, the flow of heat possible. This result is impossible to achieve with the wool mat regularly used. Installation is fast as it only requires about an hour and a half to isolate most of entretoits uni-family houses. The waiting period is 2 to 5 days for carrying out the work, depending on the time of year. Wool blown reduces installation time during construction, increase occupant comfort and make savings on heating costs. In addition, you get a guaranteed high quality at a very competitive price.
Advantages of blown wool