Poor roof insulation is one of the most common causes of high energy bills in UK homes. Heat escapes through the roof, the property never reaches the right temperature, and the heating system works harder than it should. At EBT Build we install roof insulation that solves the problem properly, not temporarily.
We provide roof insulation services across the UK covering loft insulation, flat roof insulation, pitched roof insulation, and insulation upgrades as part of wider roofing projects. Every installation is correctly specified to meet current UK building regulations.
All work is carried out by our own team with no subcontractors, fixed pricing agreed in writing, and a free site survey before any commitment is made. Roof insulation projects are usually completed alongside other roofing services to improve the overall performance and durability of the roof structure.
Member of the National Federation of Roofing Contractors, the UK’s leading roofing trade body.
Government endorsed quality scheme for tradespeople working in and around the home.
Public & employer liability insurance in place for complete peace of mind.
Consistently rated for workmanship, reliability, and project management.
Delivering home refurbishment and roofing projects with controlled processes, certified trades, and accountable project management.
Every roof insulation project is delivered as a fully managed service. We take responsibility for the complete scope of work, ensuring correct preparation, fitting, and finishing without missed details.
Our focus is not only on insulation coverage but also on correct ventilation, moisture control, and structural protection so the roof performs efficiently for years. All work aligns with guidance from the British Standards Institution.
Proper airflow around the roof edge is important for insulation performance, which is why fascias and soffits should also be checked during roof upgrades.
Our service covers everything required to deliver a fully finished and functional roof system. We begin with a site survey, carry out preparation, and complete installation with correct detailing and performance checks.
All work is completed using approved methods. Expansion control, ventilation balance, and edge detailing are handled properly to ensure durability and comfort without delays. If leaks or storm damage are discovered during inspection, immediate emergency roof repairs may be required before insulation work continues.
Installed between and over the joists in the loft floor, loft insulation is the most common and cost effective way to reduce heat loss through the roof. We install mineral wool, loose fill, and rigid board systems depending on the loft structure and access.
Flat roofs can be insulated above or below the roof deck depending on the system. We install warm roof insulation above the deck and cold roof insulation below, selecting the right approach based on the existing structure and roofing system in place.
For properties where the loft space is used as a living area, insulation is installed between and beneath the rafters rather than at floor level. We install rigid board and mineral wool systems to meet current U-value requirements.
Spray foam is applied directly to the underside of the roof deck or between rafters, expanding to fill gaps and create an airtight thermal barrier. We assess suitability carefully as spray foam is not appropriate for all roof types or properties.
Rigid insulation boards are used on flat roofs, pitched roofs, and as part of warm roof systems where high thermal performance is required in a thinner profile. Suitable for new builds and refurbishment projects.
For properties with existing but insufficient insulation, we carry out top-up and upgrade installations to bring performance in line with current UK building regulations and reduce ongoing energy costs.
Roof insulation is only as good as the specification and installation behind it. The wrong material, incorrect thickness, or poor ventilation control can create condensation problems, cold spots, and damp that cost more to fix than the original installation saved. At EBT Build we assess every roof individually and install the right system for the structure, not the cheapest option that fits the budget.
We have been carrying out roof insulation and roofing projects across the UK for over 10 years. Every installation is completed by our own team, specified to meet current UK building regulations, and priced transparently with no hidden costs or variations without your approval.
Every project starts with a detailed survey and planning phase. The roof is inspected to identify insulation needs, repair requirements, and preparation work.
Includes:
Site survey, planning, roof inspection, preparation assessment
Once preparation is complete, insulation and supporting works are carried out. This includes correct placement, ventilation control, and tolerance checks.
Includes:
Insulation installation, Alignment checks, Ventilation control
The final stage focuses on accuracy and quality. All joints, edges, and finishes are inspected before project handover.
Includes:
Final inspection, Performance checks, Project handover
Site visit and scope assessment
Transparent costs and timelines
Trades coordinated and managed
Snagging cleared, project closed
The best type of roof insulation depends on your roof structure and how the space is used. For properties with an unused loft space, mineral wool insulation laid between and over the joists is the most cost effective and widely recommended solution. For converted loft spaces used as living areas, rigid board insulation between and beneath the rafters is the standard approach. Flat roofs require either warm roof insulation above the deck or cold roof insulation below depending on the existing system. EBT Build assesses every property individually during the free survey and recommends the most suitable insulation type for your specific roof structure and usage requirements.
The cost of roof insulation in the UK varies depending on the type of insulation, the size of the area, and the accessibility of the roof space. Loft insulation for a standard semi-detached house typically costs between £300 and £900 depending on the existing insulation level and the material used. Flat roof insulation costs more due to the complexity of the system and typically ranges from £800 to £3,000 depending on roof size and specification. Pitched roof insulation for converted loft spaces can range from £1,500 to £5,000 depending on area and system. EBT Build provides fully itemised written quotes after a free site survey so you know exactly what you are paying for before any work begins.
Yes, properly installed roof insulation can significantly reduce energy bills by preventing heat from escaping through the roof. Up to 25 percent of a home’s heat can be lost through an uninsulated or poorly insulated roof. The exact saving depends on the current insulation level, the type of system installed, the size of the property, and how the heating system is used. Most homeowners see a noticeable reduction in heating costs within the first winter following a roof insulation upgrade. The saving compounds over time as energy costs continue to rise, making roof insulation one of the most cost effective home improvements available.
Incorrectly installed roof insulation can cause condensation problems, but a properly specified and installed system will not. The most common cause of condensation in insulated roofs is inadequate ventilation — warm moist air from the living space rises into the roof structure and condenses on cold surfaces when ventilation is insufficient. EBT Build designs every insulation installation with correct ventilation as a priority. For cold roof systems, ventilation gaps are maintained above the insulation. For warm roof systems, the insulation is placed above the deck to eliminate the cold zone where condensation can form. A pre-installation survey identifies any existing ventilation issues before work begins.
The time required depends on the type of insulation and the size of the area. A standard loft insulation installation on a semi-detached house can typically be completed in one day. Flat roof insulation involving removal of existing materials and installation of a new warm roof system usually takes two to four days. Pitched roof insulation for a converted loft space can take three to five days depending on the area and specification. EBT Build confirms all timelines in writing after the survey so you can plan accordingly and are never left without a clear schedule.
Yes, roof insulation is suitable for older properties but requires careful assessment before installation begins. Older roof structures may have limited ventilation, irregular joist spacing, or existing insulation that needs removing before new material can be installed correctly. Properties with spray foam insulation already in place require a full assessment as this can affect the structural timber and may need to be removed before new insulation is fitted. Listed buildings or properties in conservation areas may have restrictions on certain insulation methods. EBT Build carries out a full structural and condition assessment during the free survey and confirms the most appropriate insulation approach for your property before any work is agreed.
Reliable home refurbishment and roofing specialists delivering compliant, fully managed building work across the UK.
© 2026 EBT Build. All rights reserved.