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Frequently Asked Questions

External Wall Insulation

A:

It varies according to the size of the building but, as a rough guide, fitting external wall insulation to a small mid-terraced property can cost less than £7,000 whereas the price might rise to around £10,000 for a large semi-detached house. We'll always give you a clear, fixed  quotation before starting any job.

A:

External wall insulation can change the appearance of your home so, in some cases - especially in conservation areas - planning permission may be required. Sometimes, it will be considered a permissible development and no formal planning permission is required but it is important to check with your local planning office first. We can help you with this process if you wish. 

A:

Time on site will vary according to the size of the building but between 9 and 17 working days is usually a good guide. A  proper installation, carried out in compliance with industry best-practice, involves several very important stages. These include erecting scaffolding, making preparatory repairs to the existing walls, removing exterior fittings, fixing the insulation boards, applying the various protective coats and finishing with the chosen render. Exterior fittings are then replaced as necessary and the whole site is cleaned up before hand-over.

A:

The work takes place outside so life inside the home can go on more or less as normal. There will be some noise from drilling, mixing and other activities and there will be scaffolding outside so you'll need to be aware of that when going in and out of the house. Satellite dishes may temporarily have to be removed or relocated but otherwise, disruption should be minimal . We'll always do our best to keep you informed and respect your needs.

A:

A high quality external wall insulation system has a minimum lifespan of 30 years and should have been tested by the Building Research Establishment (BRE) or British Board of Agrement (BBA). For added peace of mind, the PermaRock WarmHome system has a materials guarantee of 25 years and is also supplied with a  matching 25 year SWIGA guarantee to cover the installation.

A:

The systems we install require virtually no maintenance. Care needs to be taken if you decide to make any future changes to the property (such as building an extension or fitting new windows). In the unlikely event that any damage to the system occurs, it should be repaired as soon as possible. Sustainable Energy Services will provide an aftercare leaflet explaining the best course of action and how to add new fixtures / fittings to your property. 

Interior Wall Insulation

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The preferred method is with rigid insulation boards that can be affixed relatively quickly. This approach is faster and takes up less floor space than building a new insulated stud wall.

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It varies according to the size of each room but to fit internal wall insulation to a typical living room it might cost around £800.

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The time will vary according to the size of the walls but the process is generally much quicker and simpler than an external wall insulation project. The boards are fitted and decorated and any plug sockets have to be extended due to the extra wall thickness. Very little other work is required. A small property can usually be completed in five days. However, work can only go ahead if the existing wall is sound and free from damp. If it is cracked and letting in moisture, the outside wall will first have to be repaired and made weatherproof. This can obviously add to the time required for the project.

A:

The work takes place inside the building so it can be quite disruptive. Rooms will have to be at least partially emptied and all wall fittings removed before work can commence. The rooms will have to remain vacant whilst the work is carried out. However, each room takes a relatively short time to complete and it should be possible to resume normal routines relatively quickly.

A:

The boards will be plastered and painted when finished so you will have a clean new wall.

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The boards are not load-bearing so if you wish to fit shelves, wall units, radiators or other heavy items, the fixings will have to go through to the solid wall behind. 

A:

In some cases, yes. The surfaces of the insulated walls will be warmer in cold weather, so condensation is less likely to form. However, unlike external wall insulation, internal insulation will not help to prevent water from penetrating a damaged outside wall.

Interest Free Finance

A:

As an accredited broker, we are able to carry out a simple assessment to determine your eligibility for an interest-free loan from Barclays Partner Finance. We do this using a simple electronic questionnaire and we can give you a definitive answer in just 10 minutes. You will then be sent a written loan agreement form, together with specific details of the amount, the repayment schedule and the various standard terms and conditions that apply. Please note that your loan agreement will be with Barclays, not with Sustainable Energy Services.

A:

Three years, but repayments can be made over a shorter term if you wish.

All monthly payments options will be provided in your quotation. 

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No. Our agreement with Barclays Partner Finance means that the same finance package can be applied to new projects as well as those previously agreed via the Green Deal. (The Green Deal scheme has now ended.) 0% finance can also be used to cover general building works such as re-roofing, window replacements, landscaping, painting and decorating and many other activities.