Saving energy with PU foam

How construction foam can reduce your heating costs.

The better an insulation material is able to stop temperature equalisation between the inside and outside, the more heating energy it is able to save. This means that less CO2 is discharged into the environment. Construction foam one of the most efficient insulation materials for filling construction joints, for instance around windows. Even a modern high-tech window is only as good as the insulation in the surrounding joints.

Why construction foam provides the best insulation

A comparison of the insulation materials shows that PU foam has the lowest thermal conductivity and the best insulating properties. This means: it provides the best insulation. This is due to its closed, fine-cell structure. This means: lots of trapped air bubbles prevents the transfer of heat and cold. In winter, the cold stays outside and in summer the heat stays outside.

Chart: Comparison of insulating values

Why the volume expansion is important

The amount of energy that an insulation material can effectively save also depends on how reliably the joints are filled. Thanks to its ability to expand to twice its original size after it is applied to the joint, the construction foam guarantees that the joint is filled reliably - especially if any unevenness in the joint needs to be compensated.

With respect to mineral wool, the quality of the insulation is much more dependent on how carefully the specialist works. Gaps in the stuffed wool can cause it to drop and leave local areas of the joint practically without any insulation.

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