Properties PUR foam Expanded polystyrene/ EPS XPS boards Thermal conductivity Very low (~0.022 W/m·K) Low (~0.035 W/m·K) Very low(~0.03 W/m·K) Air tightness Excellent Limited Good Risk of thermal bridges None (seamless) Existing (tile caps) Existing (tile caps) Installation speed Very fast Time-consuming Time-consuming Durability High Average High
Insulating a house is a critical step in ensuring the energy efficiency of any building.
One of the most effective and durable methods for this is insulation with PUR foam. In this article, we will explain why PUR foam (polyurethane foam) is a good choice, what the process of installing PUR foam looks like, and what you should pay attention to during installation.
Why choose PUR foam for house insulation?
PUR foam is distinguished by its high thermal insulation capacity, air tightness, and moisture resistance.
This means that:
Heat losses are significantly reduced.
The structure remains dry and mold-free.
The foam layer adheres well to concrete and other surfaces, filling even minor cracks and unevenness.
PUR foam is applied by spraying, which forms a monolithic and seamless insulation layer on the surface, eliminating thermal bridges.
How does house insulation with PUR foam work?
1. Preparation
The surface is cleaned of dust, oil and loose particles.
If necessary, the surface is dried, as the adhesion of PUR foam is reduced on damp surfaces.
The work area is separated to protect the surroundings from splashes.
2. Applying PUR foam
A two-component PUR foam is used, which is mixed with a special device during spraying.
The foam expands immediately and adheres to the substrate.
The recommended layer thickness depends on the energy efficiency requirements, but it usually ranges from 10-15 cm.
3. Adding a protective layer (optional, but recommended)
Since PUR foam is not UV-resistant, it must be covered with soil or finishing materials.
The protective layer also protects against mechanical damage.
What to consider when insulating with PUR foam?
The work should be carried out by a certified installer, because the quality of PUR foam depends on the mixing ratios and uniform application.
Good ventilation must be ensured during and after the work, as the foam produces chemical fumes during installation.
The material with the best thermal insulation
Insulating the foundation with PUR foam is an effective, fast and durable solution that helps keep the house warm, energy-efficient and dry for decades. If you are looking for a way to avoid thermal bridges and save on heating costs, you should definitely consider using PUR foam.
Looking for professional help with insulating your home? Contact our specialists and get a personal quote!