SEF Ltd provides a range of insulation and property improvement services, including loft insulation, SuperFOIL insulation, cavity wall insulation, spray foam insulation removal, roofing, ProPERLA wall coating, RENOEC roof coating, Positive Input Ventilation (PIV), loft boarding and cavity wall insulation extraction. Our team can assess your property and recommend a suitable solution based on its construction, condition and requirements.

SEF Ltd provides services across South East England, Greater London and selected surrounding areas. Our target service areas include Brighton, Redhill, Tonbridge, Portsmouth, Southampton, Guildford, Reading, Medway, Canterbury, Dartford, Kingston upon Thames, Sutton, Croydon, Bromley, Twickenham, Uxbridge, Hemel Hempstead, Swindon, Bath and Gloucester. Service availability can vary depending on the type of work and your exact location. Contact us with your postcode to confirm whether we cover your property.

SEF Ltd provides several insulation solutions, including general loft insulation, SuperFOIL insulation and cavity wall insulation. The most suitable insulation depends on factors such as your property’s construction, existing insulation, available space, ventilation and how the area will be used.

Loft insulation is installed within a loft or roof space to help reduce heat loss through the roof of a property. Improving loft insulation can help a property retain heat and may reduce the amount of energy required for heating. SEF Ltd can assess your existing loft insulation and recommend a suitable insulation solution for your property.

SuperFOIL is a multi-foil insulation system designed to provide thermal insulation while taking up relatively little space compared with some traditional insulation materials. SEF Ltd installs SuperFOIL insulation for suitable loft, roof and other applications, depending on the construction and requirements of the property.

Cavity wall insulation involves insulating the gap between the inner and outer walls of a property. A suitable insulation material is installed within the cavity to help reduce heat transfer through the walls. SEF Ltd provides cavity wall insulation for properties that are suitable for this type of installation.

Yes. SEF Ltd provides cavity wall insulation extraction for suitable properties. If existing cavity wall insulation needs to be removed, we can assess the property and determine the most appropriate extraction method based on the type and condition of the existing insulation.

Spray foam insulation removal involves removing existing spray foam insulation from areas such as roofs and loft spaces. SEF Ltd provides professional spray foam removal for both open-cell and closed-cell foam, with the appropriate approach determined by the type, thickness, condition and accessibility of the existing installation.

Yes. SEF Ltd provides open-cell and closed-cell spray foam removal. Because different types of spray foam can have different properties and levels of adhesion, each project is assessed individually before removal work begins.

Homeowners may consider spray foam removal for a number of reasons, including concerns about an existing installation, roof inspections, property renovation, property sale or mortgage requirements, or issues relating to the condition of the foam or roof structure. A professional assessment can help determine whether removal is appropriate for your property.

The cost of spray foam removal depends on several factors, including the size of the area, type of foam, thickness, accessibility, condition of the installation and amount of labour required. SEF Ltd can assess your property and provide a quotation based on the specific requirements of the project.

The duration of spray foam removal depends on the size and complexity of the project, the type of foam and accessibility of the affected areas. Following an assessment, SEF Ltd can provide a more accurate estimate of the expected project timescale.

Yes. After spray foam has been removed, the roof or loft area can be assessed to determine whether a suitable replacement insulation system can be installed. Depending on the property, suitable options may include loft insulation or SuperFOIL insulation.

Yes. SEF Ltd provides roofing services for suitable residential properties. Our roofing work can include repairs and other roofing-related services depending on the condition and requirements of the property. We can assess the roof and recommend the appropriate solution.

SEF Ltd provides protective coating solutions for suitable walls and roofs, including ProPERLA wall coating and RENOEC roof coating. These systems are designed for suitable exterior surfaces and can provide additional protection against weather and environmental exposure.

ProPERLA is a protective exterior wall coating designed for suitable masonry and building surfaces. SEF Ltd can assess your property’s exterior walls and determine whether a ProPERLA coating system is suitable for the surface and condition of the building.

RENOEC is a protective roof coating system designed for suitable roofing surfaces. Before recommending a roof coating, SEF Ltd can assess the condition and type of your roof to determine whether the system is appropriate.

PIV stands for Positive Input Ventilation. It is a ventilation system that introduces a controlled supply of filtered air into a property to improve airflow and help manage excess moisture. SEF Ltd provides PIV solutions for suitable properties following an assessment of the property’s ventilation requirements.

PIV can help improve ventilation and reduce excess moisture in suitable properties. However, condensation and damp can have different causes, so identifying the underlying issue is important before choosing a solution. SEF Ltd can assess your property and advise whether PIV may be suitable.

Loft boarding involves creating a suitable boarded area within a loft to provide additional storage space. SEF Ltd can install loft boarding where the loft structure, access, insulation arrangement and other conditions are suitable for the work.

Yes. Loft boarding can be installed as part of a wider loft improvement project. However, the insulation arrangement needs to be considered carefully to ensure that the required thermal performance and appropriate ventilation are maintained. SEF Ltd can assess your loft and recommend a suitable combination of insulation and boarding.

In some cases, yes. The appropriate solution depends on the existing insulation, the construction of the property and the reason for carrying out the improvement. Our team can assess the existing system and recommend whether upgrading, replacing or removing insulation would be appropriate.

The right service depends on your property’s condition, construction and the problem you are trying to address.

For example:

• Heat loss: loft insulation, SuperFOIL or cavity wall insulation
• Existing spray foam: open-cell or closed-cell spray foam removal
• Existing cavity wall insulation: cavity wall insulation extraction
• Roof problems: roofing services
• External wall protection: ProPERLA wall coating
• Roof protection: RENOEC roof coating
• Condensation or ventilation concerns: PIV
• Additional loft storage: loft boarding

If you are unsure which service you need, SEF Ltd can assess your requirements and recommend an appropriate solution.

Yes. SEF Ltd can assess your property and requirements before recommending the appropriate service. The quotation will depend on factors such as the type and extent of work required, property condition, accessibility, materials and project requirements.

You can contact SEF Ltd through our website or by phone to discuss your requirements. When contacting us, providing your postcode, property type, the service you are interested in and any relevant photographs or information can help our team understand your requirements and determine the next step.