Thermal Upgrades
Flat roof insulation and thermal improvement services to meet current building regulations — for commercial and domestic properties across Dorset and Hampshire.
As approved contractors for a wide range of flat roofing systems, we provide a complete flat roofing service for properties of all sizes. From new installations to refurbishments and remedial works, our experienced team delivers durable, compliant, and cost-effective roofing solutions tailored to your building.
We work in industrial units, offices, retail premises, warehouses, and public sector buildings, ensuring every project meets current regulations and performance requirements. By working closely with leading manufacturers and suppliers, we are able to specify and install systems that offer long-term reliability, weather resistance, and low maintenance.
Our flat roofing solutions are designed with minimal disruption in mind, allowing your business or household to continue operating safely while work is carried out.
Compliance & Performance
Flat Roof Insulation & Thermal Improvements
In conjunction with our flat roofing services, we support clients in meeting current Part L insulation requirements for flat roof projects. By assessing the existing roof build-up and proposed works, we help specify insulation solutions that improve thermal performance and overall efficiency.
We are able to supply and install both flat board insulation and tapered insulation schemes, allowing us to address drainage, falls, and insulation performance within a single, compliant solution.
Insulation Solutions
Insulation Systems for Flat Roofs
We work with trusted suppliers to install insulation systems suitable for both new installations and refurbishment projects. Our approach ensures insulation is correctly integrated into the roof system, supporting long-term performance and compliance.
Our thermal upgrade services include:
- Assessment of existing roof insulation
- Specification to meet Part L requirements
- Flat board insulation systems
- Tapered insulation schemes to improve drainage
- Integration with approved flat roofing systems
What's Included
What's Included in Our Thermal Upgrades
- High-performance insulation board
- Fully waterproof roofing system
- Vapour control layer where required
- New trims and flashing details
- All materials, labour and waste removal
- Completed to current building regulations
Visual Guide
Before vs After Installation
Before Upgrade
Heat escaping through roof
After Upgrade
Heat retained with insulation layer
Why Choose KJM
Quality You Can Rely On
Part L Compliance Assured
We keep up to date with current building regulations, ensuring every thermal upgrade we carry out meets Part L requirements and is correctly documented.
Single-Visit Solutions
By combining waterproofing and insulation works in one visit, we minimise disruption and deliver a complete, efficient solution for your property.
Trusted Suppliers & Systems
We work with leading insulation manufacturers to specify and install systems that integrate properly with the roofing membrane, ensuring long-term performance.