Bauder PIR insulation for warm roof construction

PIR insulation boards are used widely for new build warm roof constructions which benefit from the dimensional stability and good compressive strength whilst being much lighter and easier to handle than other insulation products. The insulation has the ability to withstand foot-traffic; this is an essential characteristic, especially when used in modern flat roofs waterproofed with single-ply membranes. Foil-faced PIR is thinner in comparison to glass tissue faced when achieving the same U-value.

Ease of installation and energy saving features resulting in accelerated payback are the principal reasons why insulated panels are used extensively in the refurbishment of existing buildings, helping to bring them up to current energy and airtightness standards.

Tapered insulation is one of the most cost-effective methods of introducing a fall to a flat roof. It is also significantly lighter than screed to falls solutions and does not suffer from lengthy drying times.

  • Worth knowing...

    PIR Insulation

    BauderPIR insulations can be used with our bitumen membrane systems, single ply and cold liquid applied waterproofing.

    Bauder is a member of the British Rigid Urethane Manufacturer's Association (BRUFMA)

    Rigid PIR differs from PUR in that it is produced using an excess of the liquid polymeric isocyanate, Methylene Diphenyl di-Isocyanate (MDI)component. In the presence of an appropriate catalyst the excess MDI reacts with itself to form isocyanurate which is characterised by greater heat stability. The resultant PIR insulation products exhibit increased fire performance and reduced combustibility and higher working temperature limits compared to PUR and when incorporated into building products, can meet some of the most demanding fire performance requirements such as those currently stipulated for some applications by the insurance industry.

    Excellent insulation is achieved because the gas trapped within the closed cell structure has a very low thermal conductivity and there is minimal heat conduction through the solid cell walls due to the low density, where approximately 97% of the volume of the foam is trapped gas.