How Do Attic Rafters Work?

Attic rafters, more commonly referred to as roof rafters, can be thought of as the frame or base of the roof. The rafters basically support the roof and need to be able to handle the weight of the roof. Most residential attic rafters are made from wood so you need to inspect at least every few years for signs of damage including termite damage, wood rot, water damage or any other signs of distress.

The strength of the attic rafters depends on a number of factors. The spacing between rafters, usually between one to four feet apart, may play a role in the structural soundness of the roofing system. As a general rule of thumb the closer together the rafters the better the strength although this may not always be true. Other factors affecting the strength of the rafters include how exactly the rafters are joined to the wall and the material or wood the rafters are made from.

Should You Insulate Attic Rafters?

The question of whether or not to insulate attic rafters is one homeowner face when they decide to upgrade their attic insulation.  The answer depends on whether or not the attic is finished.

Unfinished Attic Space

In most cases, you should not insulate rafters in unfinished attic spaces for two main reasons. First, if the unfinished attic space is completely unused, then there is no point in having a warm space. The insulation would be better spent on the attic floor, walls and ceilings which can conduct hot air from the living space and out through the roof.

There is also a need to keep the attic properly ventilated to prevent moisture and condensation issues. Insulating rafters in a small or limited attic space may block the free flow of cool air such as from the overhang to the peak.

You may need to consult an expert for a recommendation if you intend to finish the attic space in future.

Finished Attic Space

You can apply insulation directly to the finished roof rafters if you use your attic space. This solution is especially great for the cold winter months with the added benefit of retaining heat in the living space below.

Hire a Professional for an Expert Opinion

A professional can help you determine whether or not it is worth insulating your attic rafters. You will most likely have to install rafter vents before insulation and account for additional potential problems including ventilation, pipework, vents, light fixtures and so on.

Attic Insulation Toronto inspects the attic and makes the appropriate recommendation. We also install the insulation, remove old one where necessary and point out additional changes that are often inexpensive but count much to improve your energy efficiency. A properly insulated attic can save you up to 50-percent in heating costs especially for older homes. We guarantee that you get optimum savings and insulation properties for your investment, a lot more than you can achieve with the DIY installation.