Spray foam removal Ltd is a professional insulation company is applied foam in a liquid form using powered sprayers, which then expands and turns to a solid coating. Spray Foam Insulation Also known as spray foam, or spray polyurethane foam (SPF), is an alternative to traditional building insulation such as fibreglass, wool or mineral fibre rolls. It is used to insulate your roof, loft, walls. This foam has greater insulating properties than many alternatives. Spray foam insulation advice provides two types of form: Open-cell spray foam insulation, Closed-cell spray foam. As mortgage and equity release advisers, we have access to tools that provide data on the lending criteria.