Cavity Wall, Loft and Room in Roof Insulation

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Cavity Wall Insulation

Average EPC Improvement Range 4 – 20 SAP points

Cavity wall insulation saves up to 35% of a properties heat and can save as much as 30% from the heating bills.

The insulation can make on average a 4 – 20 point improvement to the properties EPC rating depending on the property characteristics like the exposed wall and floor area, heating type and what other energy efficiency measures are already in place.

There is currently funding available under the utility company funded Energy Company Obligation Scheme (ECO). This funding is available through Ridgewater Energy and is available subject to eligibility, survey and suitability. Not all clients will qualify for funding, but there is now a wider criteria in place than just benefits, so please contact us to find out more.

For more information about the products used, the process and the installation please see our website advice pages: https://www.ridgewaterenergy.co.uk/wp-content/uploads/cavity-wall-insulation-v2.pdf

Cavity wall insulation should only be installed by registered installers, under a 25-year guarantee and in addition installers will need to complete a suitability assessment through an approved scheme before the work can go ahead.

The cavities will only be insulated if they are suitable, and the following is checked:

  • Condition of the pointing, bricks, render and guttering
  • Cavity width must be between 50–150mm
  • Safe access to all external walls (e.g. scaffolding over glass roofs)
  • Identification of any damp issues (not condensation)
  • Checking for any rubble in the cavities
  • Severe exposure to the elements (wind driven rain)

Our installers usually use a polystyrene bead product, which is blown into the cavity with adhesive to bond it together. This material is preferred where there are external obstructions around the property, where the cavity is very wide and where the risk of water penetration is higher due to high exposure rates to wind driven rain. It is also a more thermally efficient product than mineral fibre.

Loft Insulation

Average EPC improvement 2 – 15 SAP points

Loft insulation saves up to 25% of a properties heat and can save as much as 10% from the heating bills. The current recommended level of loft insulation is 270-300mm. Typically, modern-day loft insulation material is made from recycled glass to form a mineral fibre quilt. The material is laid between the joists up to 100mm, with the remaining 150-200mm being laid over the joists at right angles to the first layer.

The insulation can make on average 2 – 15 points improvement to the properties EPC rating, depending on the properties characteristics, such as the loft area, existing insulation depth and heating type.

There is currently funding available under the utility company funded Energy Company Obligation Scheme (ECO). This funding is available through Ridgewater Energy and is available subject to eligibility, survey and suitability. Not all clients will qualify for funding, but there is now a wider criteria in place than just benefits, so please contact us to find out more.

For more information about the products used, the process and the installation please see our website advice pages: https://www.ridgewaterenergy.co.uk/wp-content/uploads/2019/10/loft_insulation.pdf

Room in Roof Insulation

How is it done and what is on offer?

Room in the Roof insulation is suitable for any property where there is a loft room or room on the top floor that has sloping ceilings.

As many properties were converted a long time ago they have no proper insulation in or above the ceilings. In order for this job to be done properly, the ceiling are taken down, and rigid insulation boards are cut and placed between the joists before the slopes and ceiling are re-boarded and plastered.

Where required, any stud walls that are accessible will have 100mm of mineral fibre placed inside the loft void in between the wall timbers, which are netted to keep them in place. In some cases hatches will be cut in to allow access to these areas.

Anyone who has ever lived in an uninsulated loft room, will tell you that they get very cold in winter and very warm in summer, so this will make a marked improvement to year round comfort levels, as well as improving the EPC of the property and preventing condensation issues in the future.

We don’t currently access funding for this measure, but can provide you with a quotation for the works on a paid basis, through one of our partner contractors.

Ridgewater Energy also manage local and national energy efficiency funding and projects, and our team have 20 years’ experience working with letting agents, management companies, private landlords and tenants.

We work with a network of trusted installers, who can assist with various energy efficiency and heating measures whether funded or on a paid quote basis.

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