Understanding Insulation

Insulation minimises heat loss through attic/roof, walls, floor and windows and subsequently reduces heating costs.

Insulation Types:

Attic insulation

Attic space is lined with insulation boards, glass- or mineral fibre, multifoil sheets or natural products made of e.g. sheep’s wool.

Attic insulation can reduce heating costs on average by around 15% (depending on existing insulation, location, type of roof, etc.)

Cavity wall insulation

The cavity between the walls is injected with insulation material. This is the least intrusive form of wall insulation but can cause damp and mould problems under certain conditions.

Internal insulation (Dry lining)

Insulation boards are fixed to the inside of external walls (and floor) and covered with a vapour barrier layer and plasterboard. While this is often a more affordable option of insulation, it should be noted that you will lose room space and will have to take out and refit kitchens, cabinets and appliances.

Insulation Materials:

There are a variety of different insulation materials available, each with its own advantages and disadvantages.

Fiberglass

Fiberglass is the most common type of insulation used in homes. It is relatively inexpensive and easy to install. However, fiberglass can be irritating to the skin and eyes, and it is not as effective as some other insulation materials at blocking noise.

Cellulose

Cellulose is a type of insulation made from recycled paper. It is more expensive than fiberglass, but it is also more effective at blocking noise and heat. Cellulose is also more environmentally friendly than fiberglass.

Spray foam

Spray foam is the most effective type of insulation, but it is also the most expensive. Spray foam is applied as a liquid and then expands to fill the space it is being applied to. This creates a seamless barrier that blocks heat, noise, and air infiltration.

Mineral wool

Mineral wool is a type of insulation made from volcanic rock. It is more expensive than fiberglass, but it is also more effective at blocking noise and heat. Mineral wool is also fire-resistant.

Sheep's wool

Sheep's wool is a natural insulation material that is becoming increasingly popular. It is effective at blocking noise and heat, and it is also fire-resistant. Sheep's wool is also relatively easy to install.