What is the difference between loft insulation and roof insulation?
As a general rule, there is little difference between loft and roof insulation. The main difference is that loft insulation is generally installed within the loft space, while roof insulation may be fitted between or beneath the rafters.
What happens if my loft has no insulation?
A loft with no insulation allows heat from the home to rise into the loft space and escape through the roof. This can make the property more difficult to keep warm and may increase the amount of heating required.
What if my loft is poorly insulated?
A poorly insulated loft may not provide effective thermal resistance. The insulation may be too thin, compressed, damaged or poorly fitted. Existing insulation can be assessed to determine whether it can be topped up or whether removal and replacement would be more suitable.
What types of loft insulation are available?
There are several different types of loft insulation available, including:
- Rigid board or foam insulation
- Blown-fibre insulation
- Loose-fill insulation
- Mineral wool
- Glass fibre insulation
- Cellulose insulation
- Spray-foam insulation
The most suitable type will depend on the loft and the requirements of the property.
Can existing loft insulation be topped up?
In many cases, yes - see our full removal and topping-up guide for when topping up works and when replacement is recommended instead.
Do I need to clear my loft before insulation is fitted?
The loft insulation installers need a safe working environment. Depending on the amount of work required, items may need to be removed from the loft before installation can begin. You will be advised about any preparation required before the work starts.
What happens to old loft insulation?
If old insulation needs to be removed, it can be cleared from the loft before the space is prepared for replacement insulation. Not all old insulation needs to be removed - an assessment should first determine whether it can remain in place or be topped up.
Will I need to do anything after the loft has been insulated?
Once the loft is insulated, the loft space itself can become colder during winter because less heat rises from the living areas below. If there is water pipework in the loft, it may need suitable lagging to help protect it from freezing conditions.
Can I insulate a warm loft?
Yes. A warm loft forms part of the heated or living space of the property. Warm lofts and room-in-roof spaces require a different approach to a standard cold loft, and the requirements will depend on the design and use of the space.
Can I use my loft as a room?
A loft can potentially be converted into a room, subject to the appropriate requirements and regulations. The insulation requirements for a room-in-roof are different from those of a standard storage loft.
Can I insulate a cold loft?
Yes. A cold loft is not used as a living space. In this type of loft, insulation is generally installed at ceiling level to reduce heat passing from the rooms below into the loft.
What if I want to use my loft for storage?
You can, but see our fitting guide for how a raised floor system can protect the insulation from being compressed by stored items.
How long does loft insulation last?
The lifespan of loft insulation will depend on the type of material, its condition and whether it has been affected by moisture or damage. If the insulation remains dry, undamaged and properly installed, it may not need to be replaced for many years.
How much does loft insulation cost?
The cost of loft insulation will depend on several factors, including:
- The size of the loft
- The amount of insulation required
- The type of insulation used
- The condition of existing insulation
- Whether old insulation needs to be removed
- The access available to the loft
- Whether additional work is required
The best way to establish the cost is to assess the individual loft and the work required.
Can you remove and replace my loft insulation?
Yes. Cornwall Loft Insulation can assess your existing insulation, remove old or unsuitable material where necessary and fit new replacement insulation.