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Loft Insulation Scotland

Scotland is a chilly place, making it one of the places in the UK most likely to be hit hardest by energy cost increases. With 25% of your home’s heat being lost through the roof, it’s imperative to act soon to save as much as possible


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At Greencastle Home Improvements, we have made it easier than ever to transform your home insulation in 4 quick and easy steps.


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How Greencastle’s Loft Insulation can help you:

Lower Energy Bills

Higher Retained Heat

Improved Comfort

Green Living

Property Value

Brown door installed by Greencastle in Scotland
Brown door installed by Greencastle in Scotland

Lower Energy Bills

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Insulating your loft means adding material that will trap heat. This is useful because Scotland is a cold place, and heating is all but mandatory here. 

Nonetheless, when that heat escapes, your radiator will continue working to replenish it. This means your house will take longer to heat up and stay heated for shorter amounts of time – until you insulate your loft. 

With an insulated loft, your heating can be turned off and your heat can remain consistent for longer. You will pay less, meaning you can distribute your money elsewhere. 

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Reduced Heat Loss

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Losing heat means you don’t reap the benefits. Heat rises. When it rises, it will look for a way out. This means anything from spaces in the roof where there are drafts, to cracks, to even the overall material that makes up the roof being too weak and thin to keep the heat inside, can all be perfect spaces for that heat to escape out of.

As such, you will never really find that sweet spot of temperature. Unless the heat is constantly on, the temperature will drop fast because of the cold Scotland air. 


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Your home will be comfortable for two reasons. For one, your house will now be warm. It will neither be too hot nor too cold, allowing you to live an existence that feels normal and up to par with what you can expect from the average modern home, even in chilly Scotland. 

Secondly is the peace of mind you’ll have with not having to micro-manage your heat. When you know the heat will stay in the house rather than escape, you can happily go about your business with a weight off your shoulders. 

Double glazing in modern Dundee home
Double glazing in modern Dundee home

Carbon Footprint Reduction

Double glazing in modern Dundee home

Reducing your carbon footprint is a noble endeavour. By insulating your home, you are reducing the amount of fossil fuels you burn to keep it heated. This, in turn, reduces your carbon footprint – how much bad gas you let into the atmosphere. This contributes to the collective effort of helping Scotland, and the planet itself.

Increased Property Value

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Adding insulation to your property is an asset. It means that you can heat your home for longer periods with less money. In this day and age of the energy crisis, there is no greater asset in Scotland than the ability to lower the price of heating. As such, this will always be an attractive prospect to potential buyers should you come to sell your home in the future.

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Loft Insulation Scotland - FAQs

Most frequent questions and answers

To insulate your loft is to take measures to reduce the heat transfer from the inside of your attic space to Scotland outdoors. This not only means that it heavily slows the loss of heat from your home, but it also blocks heat from coming in during the summer. This means insulation, ultimately, is about stabilising and making temperature levels consistent. This is especially good for homes with condensation issues. 

As for what the insulation itself is, there are five different loft insulation types

Whereas all Loft Insulation has the goal of blocking heat from escaping or invading your home, there are different forms the insulation itself takes: 

  • Blanket Insulation – This is one of the most common types of Loft Insulation on the market. The blanket that is used is made up of mineral wool, glass fibre or foil-backed felt. They are placed between the joists of the loft. 
  • Loose-Fill Insulation – This is made up of loose materials. These materials are lightweight, meaning mineral wool, cork granules and recycled newspaper. Many installers find it best to use it to actually upgrade or top up existing insulation that is hard to replace. 
  • Sheet Insulation – This is also known as rigid board insulation, and it’s a method that involves insulating loft hatches and the underside of the roof. The insulation material is actually a firm board made up of polyurethane.
  • Blown-Fibre Insulation – This insulation is made of mineral wool and cellulose fibre. Instead of being a sheet, it comes in clumps of what looks and feels like wool. It’s then blown around the loft using specialist equipment, reaching hard-to-reach areas. 
  • Spray Foam Insulation – Spray Foam insulation is a type of insulation that is very unique among the options. It involves spraying a substance that expands and fills any gap it enters. This makes it pretty good for covering wide areas, and areas that are hard to reach. 

Loft Insulation is possible as a DIY project, however, it requires research and practice. This degree of skill is something we don’t believe can come from online guides, but rather from experience in DIY projects that require precision. 

To do Loft Insulation as a DIY project, you must know the material, the safety measures and the proper installation technique. Poorly insulated lofts can lead to poor results, such as dampness issues, or even structural damage. 

It is recommended that you hire a professional. This is so that the job can be done expertly, and covered with a warranty, meaning that you don’t risk losing both time and money.

The Scotland average for loft insulation varies, as the costs are determined by the size of the loft, the type of insulation material and whether or not this is a new installation, or an upgrade.

Let’s go over the average costs, one at a time: 

  • Blanket Insulation – £1 – £3 per square foot. 
  • Loose-Fill Insulation – £1.50 – £3.50 per square foot. 
  • Spray Foam Insulation – £2.50 – £5.00 per square foot. 
  • Rigid Foam Board Insulation – £2.00 – £4.00 per square foot. 
  • Barrier Insulation – £1.50 – £2.50 per square foot. 


The lifespan of loft insulation depends on the type of loft insulation used, and how well it’s maintained. Nonetheless: 

  • Blanket Insulation – You can expect this insulation method to last anywhere from 10 to 25 years. In order to reach maximum years of longevity, there are several things you must do. For one, avoid disturbing the material once you’ve successfully installed it, and do all you can to keep the loft dry. Moisture will only damage the material, and allow the growth of mould and mildew. 
  • Loose-Fill Insulation – The lifespan of loose-fill insulation is 10 to 25 years, a lot like blanket insulation. Over time, it can begin to reduce in volume. To extend the lifespan of this fragile material, it’s imperative that you do not walk on it. In fact, it’s best that you don’t have any items at all in the loft, as this could cause a compression effect that threatens the integrity of the insulation. 
  • Spray Foam Insulation – Spray Foam Insulation is by far the most long-lasting method, lasting up to a whopping 80 years and over. On top of this, when it’s installed, very little maintenance is required to keep it functional. It is safe even from rodent infestations. Its only weakness is condensation, so ensure there’s some ventilation for any moisture that builds up. 
  • Rigid Foam Board Insulation – This insulation can last between 30 and 50 years. Its weakness is direct sunlight. Ensure the area remains dry, and that direct sunlight cannot enter. 
  • Reflection/Radiant Barrier Insulation – This insulation can last between 10 to 25 years. Dust buildup is this method’s weakness, as a build up can lower its ability to reflect heat.