Understanding all about Roof Insulation & its importance

The insulation of a roof is just as important as the outer material. Insulation is important to the longevity of your roofing system and has been used for centuries. Over the years, insulation has changed and adapted, but its purpose is the same; keeping heat inside when you need it and outside when you don’t.

The Importance of Roofing Insulation

Insulating the roof of your building saves you money every year. By controlling the internal building temperature insulation saves the need for energy. You no longer need as heating and air conditioning. Insulation reduces the amount of energy needed to run the building. Using less energy means you are keeping money in the bank and protecting the environment by leaving behind a smaller carbon footprint.
Roofing is exposed to more environmental pressures than any other part of the building, especially weather. Rain, snow and sun exposure wears away roofing and can cause damage which interferes with insulation and energy savings.

1] What Is Roof Insulation?

Unquestionably, the roof is an integral part of any building structure as it protects the structure against extreme weather. Without it, the walls and even the foundation of any structure are defenseless to damage. A roof that is well-maintained can act as an excellent defense element for the building shielding it from all harsh elements – hence roof insulation is imperative.

According to the U.S. Department of Energy heating and cooling home accounts for approximately 48 percent of the overall energy consumption. And a typical house loses nearly 44 percent of the available energy to poor insulation. Explaining in simple words, deprived of any material blocking it, warm air would rise upwards naturally and cold air will descend – Resulting in abrupt interior temperatures. There may also be significant heat gains through roofs during the summer. This means that insulating a loft, attic or roof is a simple and effective way of reducing heat loss, the size of heating and cooling systems, energy usage and so carbon emissions. Hence if you wish to improve energy efficiency in a home, you would need to work on your home insulation.

Here is a simple video that explains roof insulation:

2] Different Types Of Roof Insulation

There is a range of different materials available that are easily available for roof insulation, a few of which are comparatively cheap and can be installed without any specialist expertise:

·Blanket Insulation Or Matting Insulation

One of the most common and easiest to install is blanket insulation. These generally come in foil-backed rolls or rafters, and are held in place using timber battens between the rafters or joists. Blanket insulation is usually made of glass wool or mineral but sometimes these are also made from plastic fibers and natural fibers like cotton and sheep’s wool.

·Foam Boards

Rigid panels of insulation that are first cut and then fitted in place. Commonly foam boards are made of polystyrene, polyisocyanurate, and polyurethane.

·Radiant Barriers

Radiant barriers constrain heat transfer by thermal radiation and are more effective in hot climatic conditions. These can be easily stapled to the underside of the rafters. According to studies, this type of roof insulation can significantly gain heat.

·Blown-In Insulation

This type of insulation involves cellulose mineral fibers being blown into a void in the roof space. These demand specialist equipment and expertise, but again, these are very quick to install and are very effective for spaces that have limited access, like the gaps between roof joists.

·Spray Foam Insulation

Here, spray foam is formed of polyurethane, and then it is sprayed as a liquid which slowly expands to up to 100 times its original volume. Once it sets, it creates an effective thermal and noise insulating layer.

3] Advantages Of Insulation

As a homeowner, there are multiple reasons to insulate, here are a few:

  • Energy and cost efficiency – With efficient insulation, you will save energy and money. Around 30 percent of a building’s heat loss is in the roofing. When an efficient insulation system is properly installed, you are saving both.
  • Adds an additional layer of protection – It prevents damage in the long run that can potentially come from moisture and ice dams.
  • Reduces carbon footprint – Insulating your roof is one of the most important energy-saving projects you can complete in your home. Studies suggest that efficient insulation reduces CO2 emissions which aid in combating air pollution.
  • Prevents the growth of molds – Insulation is the best tool to prevent molds from forming. Because insulation manages the temperature and moisture of a building, it directly affects the growth of molds.

Roof insulation may add to your expenses during construction for now, but soon you would see that you are getting more returns in the term of savings in the long-run.

4] Roof Insulation – Inside Vs Outside

The insulation of your roof can be done either from inside or outside:

Insulating your roof from the outside has many advantages. In addition to avoiding emptying any rooms in the attic, insulation from the outside does not cause a decrease in your living space and limits the risk of thermal bridges. This is a preferred solution if you are renovating a facade or roof. Among other benefits, this technique leaves the frame apparent from the attic.

Insulation from the inside is a suitable solution, mainly in new construction. This roof insulation method is ideal if you have not yet fitted out the attic and allows you to keep the roof covering system unscathed.

5] Things To Consider Before A Roofing Insulation Installation

If you feel that you need roofing insulation, here are a few things you should know and consider more things to know.

  • Insulate Flat Roof From Above

A flat roof should if possible be insulated from above. A layer of rigid insulation board could be added either on top of the roof’s weatherproof layer or directly on top of the timber roof surface, with a new weatherproof layer on top of the insulation.

  • Decide Whether To Insulate Your Attic Floor Or Roof

If you plan to utilize your attic space as a bedroom, you need to keep it warm as the rest of the house. In that case, insulate the roof. But if you don’t use your attic, you can insulate the floor. This option is easier and more affordable. Insulating both the attic floor and the roof is possible. Just keep in mind that this process is difficult and expensive.

  • Get A Roof Replacement During The Fall Season

Fall makes a perfect time to replace your old roof. Your roofing contractor can do a roof insulation foam installation at the same time. This prepares your roof for the winter. With new roofing insulation, you save on winter heating.

  • Beware Of Fire Hazards

Find a qualified and legit roofing contractor that knows how to install roof insulation foil or your preferred material. Incorrect installation can create fire hazards.

Source – Gomsmartbrickc.com, adcoroofing.com

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