WINDOW AND DOOR REQUIREMENTS FOR NEW OR EXISTING HOMES

Standards and requirements in construction are becoming stricter. Due to the vast improvements in building materials it is essential now more than ever that all new construction meets the criteria for high energy efficient homes. A high energy efficient home must have a yearly energy consumption, for heating purposes, that does not reach 60 kWh/m2a. Knowing that most of the energy can be lost through the windows and doors, they are therefore the most important parts in meeting the aforementioned criteria. Inles has always strived for perfection across all of their product lines, ensuring that they are properly glazed and that they meet the high requirements for energy efficient construction.

High energy efficient homes, also called "green" or "passive" homes, have a large presence in modern construction. Passive homes must maintain a heating consumption below 15 kWh/m2a per year. The heat used is collected with heat pumps, from the passing of the sun's rays through the window glazing and of course by collecting the heat from other installed devices as well as from the body heat of the home's inhabitants. A pleasant atmosphere is created by constant air circulation; the loss of the heat is minimal due to this closed system. The usage of return heat can be as high as 90%.
Windows and doors that meet these high performance criteria must have a heat loss/gain under 0,8 W/m2K for the whole unit, heat loss/gain through the glazing must be a minimum of Ug = 0,7 W/m2K. It is also essential that the products are installed as per RAL instructions. When building a "green" home, the initial investment may seem too expensive when calculating the costs of construction, but numerous studies show that due to ever increasing utility costs, the investment is returned in only a few years. We must also consider that trends in construction are constantly changing, and are getting closer and closer to meeting the criteria for "green" construction. It is only a matter of time until building green becomes the rule rather than the exception. An important fact to consider is that it has been suggested to the European Parliament, that all new construction shall use green technology beginning in year 2011 (29th paragraph of European Parliament Resolution 2007/2106).

PASSIVE CONSTRUCTION CERTIFICATE

Two of our products have received this recognized certificate issued by Passivhaus Institute from Darmstrad and are marked as "components suitable for passive construction." This is the most recognized and independent institute for passive homes in Germany. It is run by Dr. Wolfgang Feist, the pioneer in researching passive homes in Europe. The institute provides directions for passive construction; it also requires that the products used in construction are manufactured according to the same criteria and requirements.

All certified products are made of high quality components and are the only ones suitable for passive construction. By purchasing these certified products, we assure you that you are getting the highest quality and highest efficiency products available and guarantee that it will help create a pleasant and enjoyable home environment.

LESENO OKNO ISO-110

ISO-110 is a high energy efficient wooden window that has a middle core made from hard PUR foam. The Passivehaus Institute results show the heat passage of the unit as 0,8 W/m2K, which is categorizes this product as a passive construction product. This window is triple glazed with heating passage of Ug=0,7 W/m2K and stainless steel glazing bars which give the window even better performance. There is also an option to use glazing with lower heat passage, which gives better heating characteristics to the unit itself.

LES/ALUMINIJ OKNO ISO-HA Varioterm

ISO-HA Variotherm is a wood, aluminum clad high efficiency window. Made of a wooden frame that features a secondary PVC insulated frame wrapped in aluminum cladding. The Passivehaus Institute results show the heat passage of the unit as 0,8 W/m2K, which categorizes this product as a passive construction products. This window is triple glazed with heating passage of Ug=0,7 W/m2K and stainless steel glazing bars which give the window even better performance. There is also an option to use glazing with lower heat passage, which gives better heating characteristics to the unit itself.

RAL INSTALLATION CERTIFICATE

The proper installation of windows and doors is very important. The connection between the frame of the product and wall opening is the weakest point in standard construction which at this moment is the most common construction style. Therefore the proper installation is very significant and in the case of passive construction is regulated by RAL instructions. By following these instructions, the loss of the heat at the connections is almost zero. Inles, as the owner of two RAL marks of quality, also offers the RAL certified installation of our products. For proper performance of these high regulations, Inles is cooperating with different companies and with their help performing the training of our installation teams. We use the highest quality products only, which are the only ones suitable for passive construction and the only ones that can meet our high expectations. There are a lot of companies on the market offering RAL installation of windows and doors, but they do not use the proper materials or do not meet other important qualifications. Usually the installations preformed by these companies are suitable for a short period of time only or not suitable at all. Therefore we recommend, making sure that all materials used including the installation itself are certified. If you choose Inles, we guarantee it will be a worry free experience for you.