Energy efficiency in buildings is becoming an increasingly important issue. But it’s not just older buildings that need to be brought in line with new energy standards. High-quality construction materials and design are also of the utmost importance for new buildings, as they represent the only way of ensuring reliable insulation and therefore low energy consumption.
Roof linings—an additional layer under the outer roof covering—provide improved protection against the elements. While designs that use laminates provide excellent protection against wind and moisture and good energy insulation, breathable textile membranes allow for good air circulation, which helps to prevent mold. Finding the best combination of materials for any lining also depends on the individual installation situation—the requirements for a butterfly roof differ from those for a pavilion roof, for example. On top of this, choosing the right adhesive can help to ensure that the lining and the protection it offers last for longer.
Top Adhesives for Top Performance
Membranes and laminates such as the underlays used in the construction industry are highly demanding in terms of an adhesive’s adhesion properties. The most common type of adhesive used for bonding construction textiles is strong PO hot melts. While the adhesive is applied over a large area when using a laminate, coating a textile membrane requires an “open” application technique. Jowat-Toptherm® 230.45 is an adhesive designed for this application that has been on the market for several years.
Just like in other industries, the construction sector is seeing a trend towards polyurethane adhesives that can also reliably hold up to the demanding requirements placed on the laminate—with short cycle times, a wide adhesion spectrum and high final strength, they open the door to a wide range of optimization options when it comes to coating roof linings. PUR hot melt adhesives are the perfect choice for moistureresistant
bonds that also need to be able to withstand mechanical loads for a long time. A certain amount of flexibility in the bond reduces the risk of damage in such scenarios. The lining remains reliably watertight—which means the roof does, too.
Looking to the Future
One promising candidate for effective use in the field of construction textiles is the PUR hot melt adhesive Jowatherm-Reaktant® 630.20. Due to its low-viscosity formulation, this product can be used to achieve a smooth, continuous film of adhesive even with a low application amount—a characteristic that is of high value to processors. This adhesive can also be used in industrial mass-production processes. Whether processors choose a PO or a PUR adhesive, Jowat supplies suitable and reliable bonding solutions that will put a safe roof over your head in both scenarios.
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