When it comes to insulating your new or existing home, you’ve probably heard about plenty of different methods. But it can be overwhelming to know which type is the best for your home, so we’ve broken it down a little and explained 5 available options, with pros and cons for each.

Types of insulation for residential use

Before You Begin: Choose the Right Level of Insulation.

Before you consider the kind of insulation, you’ll want to make sure you know how much insulation you’ll need, and it’s best to start by determining what U-value is recommended for your area. U Value is measured across a complete construction (lower is better). R-values (thermal performance of each component ) are then individually added into a U-Value calculator to give for example, a wall or floor or roof construction U Value. The R Value measures insulation’s ability to resist heat travelling through it. The higher the R-Value, the better the thermal performance of the insulation and the less energy you’ll waste heating and cooling your home. R Value will typically rise with increasing the thickness of product specified.

Where Do You Need It?

You also need to consider where you need to add insulation. If it’s for a wall in a home that’s already built, you’ll most likely need to add insulation either inside the existing walls or to the outside of the walls. If it’s for an existing loft or crawl space, you may be able to use Fibreglass or Rockwool blanket or a PIR foam board insulation.

For unfinished walls, floors, and ceilings, BMD suggests the following five types of insulation because they can be built as you go or fitted between studs, joists, and beams. Here are some choices, including the pros and cons of each:

Blankets & Roll Insulation

Blankets or rolls of insulation can be made of mineral wool, (either Glass Fibre Based or Volcanic Rock Based eg. Rockwool), plastic fibres, and natural fibres—like cotton or sheep’s wool. These types of insulation generally come without a facing, but facings made of kraft paper or foil-kraft paper are also made which can act as a vapour barrier.

Pros: Fibreglass blankets and rolls are relatively cheap, very easily available and can be installed in ceilings, unfinished floors, attic spaces, and crawl spaces. Cheap cost per m2