Filling from above – After the cavities have been filled our installation team begin filling the wall cavity from above on the ceiling. Roof tiles will be removed to gain access to the cavity. Using a lay flat style hose, similar to the hoses used for pumping water, it is easy to gain access to the narrow 50mm space. The supafil product is then pumped through the hose and the cavity begins filling from the bottom. The operator then lifts the hose and continues to fill the cavity until the product reaches the top of the wall cavity.