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How To Insulate Eaves Of Roof The Easy Way

How To Insulate Eaves Of Roof

Ah – how to insulate eaves of roof spaces! Most of us know that insulating our loft spaces is the best way to cut energy costs and keep our homes warm and cosy.

However, not as many people may be aware of one of the pitfalls of traditional loft insulation or how big an impact the problem can have on your home’s thermal efficiency.

Insulating the eaves of your roof is essential, and not doing so will seriously compromise the overall effectiveness of your insulation. Here’s why…

Heat – The Great Escapist

To be effective, insulation needs to provide a continuous barrier to heat loss. There should be no uneven areas, no gaps, no holes or areas where hot air (which loves to escape) can find its way out of the attic space.

To be truly effective, insulated areas must be ‘tied down’ to the roof itself at the eaves.

This is the point where the roof meets the walls of the house, and it’s one place where small gaps and cracks are commonly found. You may not be able to see them clearly yourself, but you can be sure that your hard-earned hot air will! So, how to insulate the eaves of your roof?

How To Insulate Eaves Of Roof – The Options

There are several common types of insulation in use in the UK today; traditional fibreglass, cellulose and spray foam insulation. Each of these have a range of benefits, and each fall within different price ranges.

The bargain option in this case is with rolls of fibreglass, which most people will be familiar with.

Next up comes cellulose, and finally spray foam. With each the cost reflects effectiveness. The cheapest won’t leave you that cheerful; whilst the most expensive will leave you with a warm glow – especially when your heating bills begin to fall!

Spray foam is, however, the go-to insulation material when it comes to covering all bases, or gaps and cracks in this case. This also includes the eaves of roof spaces too!

Low Performance Insulation

The quality of insulation is measured in R-values; the lower the figure the less effective the material.  Fibreglass is generally the lowest of the low when it comes to R-value, and when it comes to insulating the eaves it’s pretty ineffective.

Even with the most professional of installers or an expert D.I.Y job, the rolls of insulation will always have small gaps between each other, and they never fully reach the hardest to reach areas in a loft. The hardest of all areas is nearly always the eaves, which are difficult to access for just about everyone.

Mid-Priced, High Maintenance?

Cellulose is actually great, when it comes to stopping up those gaps under the eaves and dealing with the ‘how to insulate eaves of roof’ issue. You can buy loose fill bags of cellulose and pour these into the areas to be insulated.

With a bit of brushing and pushing the material will eventually find its way into the whole area filling up all the space to be insulated.

However, the downside, when it comes to eaves, is that air movement or drafts can gradually move the material around. This makes the areas around the edges of the loft, the eaves, the most prone to movement of this type of insulation.

The up-side here is that regular checks can hopefully identify problems and cellulose can easily be moved around to fill gaps, or more added to achieve the same effect.

Cellulose, which is the mid-priced option for insulation, generally has a higher R-value than fibreglass, and, therefore, is considerably more effective as an insulation material.

How to Insulate Eaves of Roof – The Final Solution?

Spray foam is, however, the go-to insulation material when it comes to covering all bases, or gaps and cracks in this case. This also includes the eaves of roof spaces too!

The foam is sprayed into the loft and as it begins to set, it expands by around 100 times, finding its way into the gaps, cracks and holes that other insulation just can’t reach.

Once set, it forms either a soft, spongy finish, or a hard rigid one; the two different finishes are known as open or closed cell spray foam respectively.

The latter not only insulates but is also a good structural ‘glue’ creating rigid extra support for the attic space. R-values for spray foam range from around 4-8 per inch, making it the best performing insulation around.

The nature of the product should be self-explanatory when it comes to dealing with those troublesome eaves. Foam easily reaches, fills and stops the gaps up for good.

It prevents cold air currents from invading your space, and stops that old escape artist, hot air, in its tracks. As solutions go, spray foam really does have it covered! Learn more about how this product can help your home today, by calling 0800 1700 636, or by simply clicking the button below!