Paved Roof Insulated with Spray Foam

1. Washing

The old paved surface is pressure washedPressure washingCleaning a surface with a strong jet of water from a machine. Before waterproofing, insulation or painting, it removes dust, dirt, lichen and loose material so the new layer bonds well. to remove the dust and dirt that would stop the foamSpray polyurethane foamA foam sprayed on as a liquid that expands on the spot and sets into one seamless layer. It insulates against heat and cold and closes cracks and joints. from bonding.

2. The whole surface

The whole roof is cleaned, right up to the railings.

3. The machine

The machine feeds the spray gun with the two materials that turn into foam when they meet.

4. Spraying

The foam is sprayed over the paving and expands almost at once into one continuous insulatingThermal insulationA layer of material that lets heat through only slowly, so a home keeps its warmth in winter and stays cool in summer. layer. The sprayer wears a protective suit and mask.

5. Around the machinery

The foam also wraps the bases of the ventilation units.

6. Under the solar heaters

The same goes for the legs of the solar water heaters, which are often where water gets in.

7. The result

One continuous, light-coloured surface across the whole roof. It insulates the building and leaves no joints for water.