All cavity wall and loft insulation products are installed exclusively through the Mark Group.
The Mark Group is a nationwide installation company established in 1974.
As well as being the leading UK installers of domestic insulation products, Mark Group: -
• Manage over 5,000 domestic installations each week.
• Are NIA and BBA registered.
• Guarantee Cavity Wall Insulation for 25 years through CIGA (Cavity Insulation Guarantee Agency)
• Are Fully Qualified Installers
