How to insulate an attic or roof to save energy

 In Roof trusses

Hot air tends to rise, as we all know! This is why a building loses most of its heat through the roof.

One of the simplest ways to improve the energy efficiency of your home and considerably reduce your heating bill is therefore to insulate your roof or attic.

In this article, find out how to insulate an attic or roof to save energy.

Take the type of roofing into consideration when planning your insulation project

The insulation of the roof and attic of a building largely depends on the type of roof it has and the method of construction used.

For example, if the house has a cathedral ceiling or a flat or low-pitched roof, it will be more difficult to insulate because the attic space tends to be very small and difficult to access. Conversely, houses with a standard medium-pitch roof built using prefabricated wood trusses offer more insulation options.

Cold or hot? 2 ways to insulate your attic

The simplest and cheapest solution for attic insulation is the so-called cold attic. This technique involves placing insulation directly between the ceiling of the upper floor and the attic floor, which prevents heat from penetrating the attic. With this method, only the attic floor is insulated.

However, if the attic is used as living or storage space, the best solution is to completely insulate the roof, which requires the installation of thermal insulation materials on all surfaces. This method is similar to the method of insulating a wood-frame house because the insulation material is inserted between the roof framing components. This is a slightly more expensive option, but it keeps the attic room warm and comfortable.

Insulating materials for roofs and attics

The range of thermal insulation materials has been expanded in recent years. While some types of insulation are relatively simple to install, others require specialized equipment and professional expertise.

Insulating wool

Glass fibre or mineral wool insulation is probably one of the most common types of thermal insulation. It is widely used for wood-frame wall and floor insulation, but is also effective for roof and attic insulation.

Bulk and blown-in insulation

Bulk insulation materials such as blown cellulose and hemp are most suitable for insulating flat roofs and cold attics, as they settle and form a very dense insulation layer compared to materials in rolls or sheets. In addition, this method can also be used to fill gaps that are difficult to access using the dry blowing method.

Polystyrene foam panels

Polystyrene foam panels offer excellent thermal insulation in relation to their thickness and are mold resistant. They are most often used for wall insulation, but they are also effective for roof insulation. Simply insert them between the structural elements of the roof being insulated and they will act as a thermal bridge.

Polyurethane foam

Polyurethane foam is one of the most efficient insulators thanks to its acoustic performance, low thermal conductivity and vapour permeability. When professionally applied in the attic, this foam easily covers all shapes and fills cracks and gaps to form a seamless surface.

The time has come for decisions!

In short, if you insulate the roof or attic of your home, you will definitely save energy, no matter which method you choose. On the other hand, if you take the time to assess your needs by considering the function of your attic and the layout of the roof structure, you will further reduce your energy consumption and monthly bills.

Rest assured that the wood roof trusses manufactured by UsiHome make it easy to insulate your attic, whether you choose a traditional model, flat roof or roof structure. Contact our specialists in prefabricated structures to learn more about the topic and increase the energy efficiency of your construction project!

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