Cavity Wall Insulation Tools

Written by marjorie gilbert
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Cavity Wall Insulation Tools
Cavity wall insulation can mean savings in energy bills. (spiralling insulation image by jbattx from

Whether you live in the temperate south or the colder northeast, insulating the wall cavities of your house can mean a savings in energy costs. When your house is properly sealed, it can effectively keep the inside air in and the outside air out. For warmer temperatures, this means your air conditioner will run more efficiently because it simply cools the interior of the house while keeping the hot air outside from entering. The furnace can more efficiently keep the interior of the house warm while the cold outside air cannot penetrate. When you install cavity wall insulation, you need tools to help accomplish this task, which vary according to the insulation you choose.

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Batt Insultion

Batt insulation is usually made from fibreglass and comes in large rolls backed with paper or foil. This insulation requires more than one tool to install it in the cavity wall. Cut the fibreglass to size by sandwiching it between a piece of plywood and a scrap of wood, and cutting it with a utility knife. Secure it in place with a staple gun. Fibreglass insulation also comes fully enclosed, with paper or foil on both sides, and installs in the same way. However, for both types of insulation, wear a dust mask to avoid inhaling the glass fibres into your lungs, safety glasses to protect your eyes and gloves to protect your hands.

Loose Fill Insulation

Loose fill insulation is made from a variety of materials: cellulose, wool or even fibreglass. This type of insulation requires a machine that blows the insulation through a hose. You can rent the machine from the same place you buy the blown-in insulation. Where eye protection and a dust mask when installing loose fill insulation in cavity walls.

Rigid Foam Insulation

Rigid foam insulation is made of moulded expanded polystyrene (EPS), polyisocyanurate (ISO), or extruded polystyrene (EPS). Like batt insulation, you can cut rigid foam insulation to size with a utility knife. However, instead of installing it inside the studs, like batt insulation, install it on the outside of the wall studs, encapsulating the wall cavity. The tools needed to install this insulation are furring, or strips of wood, nails and a hammer.

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