CAVITY WALL INSULATION
GreenRwall® is a lightweight cavity wall insulation, suitable for 20mm – 80mm wall cavities. GreenRwall® consists of re-ground polystyrene particles treated with a polymer additive.
Cavity wall insulation reduces heat loss and gains through walls, making a significant difference in temperature in your home. Comfort is improved and heating, as well as cooling bills are reduced. Greater savings in energy consumption can be seen by adding cavity wall insulation to a home with existing ceiling insulation.
A typical GreenRwall® installation. It can be noted that water vapor from wet bricks on the outer wall cannot penetrate to the inner wall with a filled wall cavity.
GreenRwall® is either blown or pumped under pressure into the wall cavity by removing half a brick or a whole brick. This results in the elimination of airflow within the wall cavity – a high insulating value being achieved from still air.
Without convection flow inside the cavity wall, there will be no condensation or damp issues. Additionally, moisture condensing on the outer wall cannot penetrate to the inner wall, with the isolation of the inner leaf from the outer leaf.
Cavity wall insulation virtually eliminates condensation and mould problems, creating healthier living conditions.
GreenRwall® can achieve different R value requirements. See table below.
20mm – 80mm wall cavities: new builds and existing buildings.