Cavity wall insulation Dunderry is used to reduce heat loss through a cavity wall by filling the air space with material that inhibits heat transfer. Cavity Wall Insulation Dunderry can save you up to 30% on your bills. External wall insulation Dunderry is installed by adding a weatherproof insulating layer to the outside of your wall.
External wall insulation Dunderry or Wrap Around Insulation is one of the most efficient Home insulation upgrades. The exterior of your house is renewed, thus extending the life of your home. Your house will also be made more airtight, decreasing heat loss due to draughts.