Apollo Construction and Insulation are NSAI approved to fit cavity wall insulation if you have cavity walls in your home. We apply polyurethane beads mixed with a water based glue which solidifies within your walls when pumped and filled. This type insulation is an excellent way of insulating your home and the benefits of this either in an existing or new build are up to 30% reduction on your heat loss, you save on your heating bill, its energy saving and eco-friendly by cutting down on energy use in the home which reduces carbon emissions.