Frequently Asked Questions

Loft Insulation FAQs

What is loft insulation?

Loft insulation is made from man-man mineral fibre usually made from silica sand, and has a wool-like appearance. It is supplied in rolls sealed in plastic packaging.

How long does loft insulation last for?

Loft insulation does not require any maintenance and should last indefinitely.

Why is it free?

The government have committed to a target of cutting carbon emissions by 80% by 2050. One of the simplest ways to do this is to reduce the amount of energy we use in our homes. At the moment, the government have made funds available for certain households to have their home insulated for free.

My loft is boarded — can I still get it insulated?

Yes, we can lay the insulation on top of the boards — even if there is already insulation under the boards.

I have some insulation in my loft — can I get it topped-up for free?

Yes, providing that the existing insulation is less than 60mm thick. We will top it up to the recommended 270mm. If you are unsure how much insulation you already have, one of our surveyors can inspect your loft and let you know if you are eligible for a top-up.

How long does it take to install?

A typical loft takes around 1 – 2 hours to insulate.

I rent my house — can I still get free insulation?

Yes, as long as we have permission from your landlord.


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Cavity Wall Insulation FAQs

What is a cavity wall?

Most modern houses have two external brick walls with an air-gap in between them. Although air acts a natural insulator, it is not as effective as the insulation material now used to insulate houses.

How do I know if I have cavity walls?

If your house was built after 1920 it is very likely that it has cavity walls. If it’s older it probably does not. An easy way to tell is to measure the thickness of your external walls by looking at a window or doorway. A cavity wall will be at least 260mm thick.

What is cavity wall insulation?

The insulation material is a wool-like, man-man mineral fibre. It is very similar to loft insulation.

Why is it free?

The government have committed to a target of cutting carbon emissions by 80% by 2050. One of the simplest ways to do this is to reduce the amount of energy we use in our homes. At the moment, the government have made funds available to insulate any house with cavity walls that are classed as ‘hard-to-treat’ for free. Houses with standard cavity walls can be insulated for free if the occupants meet certain criteria.

I have cavity walls — how do I know if they are already insulated?

Most houses built from the 1990’s onwards were built with insulation material in the cavity wall. If your house is older than this, and none of the previous owners have had insulation installed, it probably has empty cavity walls. If you are unsure, one of our trained surveyors can inspect your walls.

How is the insulation installed?

Our installers will drill a few small holes (22 – 25mm) into your outside walls, in the mortar between the bricks. A machine is then used to inject the insulation material into the walls. Once the process is complete, the holes are filled.

How long does it take to install?

For a typical 3 bedroom semi-detached house, the installation will take 2-3 hours.

How long will the insulation last?

For the lifetime of the building, as stated by the British Board of Agrément.

I rent my house — can I still get free insulation?

Yes, as long as we have permission from your landlord.


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External Wall Insulation FAQs

What is EWI?

External wall insulation (EWI) is a solid insulation material attached to the outside of a building and covered with a protective render. It is suitable for old or unconventional buildings that don’t have cavity walls.

How durable is the insulation?

EWI systems are designed to withstand normal wear & tear and impacts. If part of the systems gets damaged, repair is quite straightforward.

How long does it last?

All systems are tested by the BBA for life-expectancy and achieve a rating in excess of 30 years.

Does it come with a warranty?

All EWI systems are covered by a 10-year manufacturer’s warranty relating to labour and materials. An extended warranty is available for additional cost.

How is EWI installed?

The system is installed in a number of steps. First, all external fittings will be removed. The insulation slabs are then attached to the wall — either with an adhesive or mechanically. Next, a render is applied to cover and protect the insulation, along with a decorative finish of your choice. Finally, all external fittings are replaced.

How long does it take to install?

Insulating an average size home will require around 9 – 10 days of work, spread over 3 – 4 weeks (to allow for drying time etc.) To minimise disruption, most people have their home insulated at the same time as having other work done.

What decorative finishes are available?

A number of finishes and colours are available, designed to blend in with the existing structure. These include a range of traditional aggregate finishes and a brick effect finish. The installers can discuss this with you before work begins.


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Free Boiler Replacement FAQs

Is my boiler eligible to be replaced?

Your existing boiler must be G-rated in order to qualify for a free replacement. G-rated boilers are less than 70% efficient, and would have been installed before 1998. It will also have a continuous flame visible through a small window. Older boilers are NOT combi-boilers. If you are unsure, one of our trained surveyors can check your boiler for free.

What will my new boiler be like?

Your new boiler will be modern combi-boiler which is A-rated for energy efficiency. We use well known brands such as Worcester Bosch and Ideal.

Who will install the new boiler?

Once we have determined that you qualify for a free upgrade, we will arrange for a Gas Safe registered engineer to come and fit your new boiler.

Why is it free?

The funding is provided by the main energy suppliers as part of the Affordable Warmth ECO scheme. This is designed to help lower-income households reduce their energy bills and avoid fuel poverty.

I rent my house — can I still get a free boiler upgrade?

Yes, as long as you receive the qualifying benefits and we have permission from your landlord.


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PV Solar Panel FAQs

Is my property suitable for Solar Panels?

PV Solar Panels work best on roofs which face south, south-west or south-east. They may not be suitable if your roof is shaded by large trees or other buildings. Our surveyors will be able to assess whether your roof is strong enough to support the weight of the panels (most standard roofs are).

Do I need planning permission?

Planning permission is not usually needed for solar panels, but may be in some circumstances — for example if you live in a conservation area. We would always recommend that you check with your planning office before having solar panels installed.

I rent my property — can I still have Solar Panels installed?

Yes, but only with permission from your landlord. The panels will belong to the house and will remain the property of the landlord when you move out.

How long does it take to install the panels?

A typical installation takes between 1 and 2 days.

Will the system be checked and tested?

Yes. The inverter equipment and wiring will be fitted and checked by a qualified electrician.

What is the Feed-in Tariff?

Feed-in tariffs were introduced by the government in 2010 as an incentive for people to generate their own green energy (e.g. with solar panels). You will be paid for the energy you produce, even if you use it yourself.

What is a desktop survey?

A desktop survey is a free, no-obligation survey of your property. It is carried out from our office using satellite imagery. One of our solar specialists will measure the area of your roof and the direction it faces. They can then use this information to calculate how many panels could fit onto your roof, how much electricity they could generate, and how much money you could save. A written report will be sent to you. Then, if you are happy to continue, a surveyor will visit your property to assess the structure of the roof and provide a quote.

Will I still get electricity during a power-cut?

No. For safety reasons the solar panel system will be automatically shut off. This is to protect the workers repairing the problem.

Do the panels require any maintenance?

Solar panel systems require very little maintenance, other than making sure they do not become obstructed by trees or other objects. It is advisable to have the wiring inspected periodically by a qualified electrician.


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Hot Water Solar Panel FAQs

Is my property suitable for Thermodynamic Solar Panels?

The majority of properties are suitable for Thermo Panels. They do not necessarily have to go on the roof or be in direct sunlight, as they simply absorb heat from the air around them. The panels are also light (approx. 8kg) and can be mounted vertically on walls.

If the panels produce all of my hot water, do I still need a gas boiler?

If you have a system producing domestic hot water and a system producing hot water for your radiators, then you will no longer need your gas boiler.

Do I need planning permission?

Planning permission may be needed in some circumstances. We would recommend that you check with your planning office before having solar panels installed.

I rent my property — can I still have Thermo Panels installed?

Yes, but only with permission from your landlord. The panels will belong to the house and will remain the property of the landlord when you move out.


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