Because of the high thermal performance of PU, there is no need to install deeper joists, and whether the space is to be used for living in or simply for storage, it will offer the greatest potential for the home owner whilst helping to keep the heat in over the winter and out over the summer.

PU insulation installed in between the rafters

Above rafter insulation is applicable for both new build and refurbishment. Installing PU insulation above the roof timbers has multiple benefits. Having insulation over the rafters reduces the risk of cold bridging and, provided a breathable sarking membrane is used, offers the opportunity for a warm, airtight construction.

PU insulation installed on top of the rafters

In case the attic is simply used for storage, PU insulation is an excellent choice since it has high resistance to compression. To walk on the attic floor, one needs to install a protective layer, e.g. OSB.

PU insulation installed on the attic floor

This method of insulating a solid wall is appropriate where it is impractical to insulate externally for reasons of aesthetics or space. The PUR/PIR insulation products are bonded to plasterboard and can either be fixed to the existing wall by “dot-and-dab” or adhesive bonding or they can be mechanically fixed.

Internal insulation with PU laminated boards

One area that can bring significant benefits in terms of reducing energy consumption, but one that is often overlooked, is floor insulation. The thin solutions offered by PUR/PIR insulation products means that less depth of excavating is required to accommodate the floor structure. The financial saving of just 50 mm depth across the floor area of a building can be considerable.

PU floor insulation

PU insulation makes it easy to achieve the U-values you want. The fact that this can be done without great thickness means that the best use is made of the available space and other construction costs are kept down, such as the depth of timber studs or the length of fasteners.

PU cavity wall insulation

Due to the high resistance to compression, PU insulation has the ability to withstand foot traffic. This is an important characteristic to avoid water ponding, membrane failure and water penetration.

PU insulation on flat roofs

PU insulation offers one of the thinnest solutions available as a result of the superior thermal performance. It is the best option when renovating facades as it does not lead to cold bridging.

PU in ETICS (External Thermal Insulation Composite Systems)