An alternative to standard subfloor profiles has been on the market for some time in the form of Purenit, which largely eliminates thermal bridges. Why has this material become so popular? That's what we look at in today's article.
19.9.2022 ISOparts s.r.o.
As we head into a winter that will be highly unpredictable in many ways this year, more and more people are reaching for insulation in their uPVC windows to reduce their energy bills and keep their homes at a comfortable temperature.
There has been an alternative to standard underlay profiles on the market for some time in the form of Purenit, which largely eliminates thermal bridging. Why has this material become so popular? That's what we look at in today's article.
With missing or inadequate insulation, thermal bridges are created between windows, balcony or French doors and the sill or floor. They are the weakest point in the whole structure, through which heat escapes unnecessarily and you overpay for energy because you have to heat more.
If you have stripped windows, the standard window frame is backed with a backing profile, but this lags behind the insulating properties of the window itself. While this is technically an acceptable solution for standard uPVC window installations, which meet all standards and technical requirements, if you are looking for an improved solution to this detail, or are preparing to implement a passive or low-energy house, it is advisable to bet on a more efficient solution in the form of Purenit.
This hard polyurethane-based material will not only offer you the necessary insulating properties, but also high compressive strength (δ10 = 7.5 MPa) to support the weight of a plastic window or door. The undeniable advantages of Purenit are its easy workability, minimal water absorption (Wit 0.2% in the long term) and resistance to chemicals.
The thermal conductivity coefficient for this material is λD = 0.080 W/mK, the bulk density is 475-540 kg/m3 and the diffusion resistance factor is µ = 8. At the same time, Purenite is easily anchored to the frame of a plastic window and can be combined and bonded with other materials if required.
Thanks to the above mentioned properties, Purenit is the ideal material for eliminating thermal bridges in buildings, not only in low-energy and passive houses. However, it is precisely for these buildings that the premium Superline profile is suited, for which we have created a system-adapted Purenite substrate that fits precisely to the outer contour of the window frame.
Count on Purenit insulation solutions for your building too. Our products combine quality craftsmanship with the unique properties of Purenit. Inquire about our services and products, we will be happy to help you choose the best solution for your specific situation.
