Jablite is the UK's largest producer of EPS products for insulation and civil engineering applications

Prestigious London development selects Jablite Inverted Roof Insulation


When Tilbury Contracts took on a prestigious development in Chelsea, they asked Jablite to supply its Inverted Roof Insulation to top off the project.

Tilbury needed a BBA-certified system with the required compression and thermal performance. Jablite’s 200 grade grey HP board met the project criteria with its design load capability of 90KN/m² and a thermal conductivity of 0.035 for U-value calculations on an inverted roof application.

Job details
Job Installation of Jablite HP Inverted Roof on London development
Contractor Tilbury Contracts Ltd
Site Chelsea Waterfront, Lots Road, London SW10

Product details
Jablite Inverted roof application using Jablite 200 HP insulation boards

Designed by world renowned architect Sir Terry Farrell, Chelsea Waterfront comprises of a 37- and 25-storey glass residential tower, 3 riverside buildings arranged around landscaped gardens and the refurbishment of the historic Lots Road Power Station. When complete, the scheme will deliver 706 new homes to the area.

Compton house, one of the riverside residential units on the development has been built using a Jablite Inverted Roof Insulation. This roof design incorporated 1600 sq.m. of Jablite 200 grey HP roof insulation on top of a high performance waterproof membrane and finished with a shingle top or precast paving where appropriate.

Jablite HP boards are manufactured using a low water absorption expanded polystyrene (EPS), specifically designed for inverted roof applications. High Performance boards are overlaid with a Jablite Filter Membrane, laid in 300 mm laps overlapping in the downward direction of the flat roof slope. This is an integral part of Jablite’s inverted roof system and reduces the cooling effect of water penetration, improving the overall thermal performance of the roof system.

“The Jablite system is simple to install and the  1200 by 1200 boards  enable a fast  installation,” says Will Haynes, Tilbury Contracts. “Jablite HP Inverted Roof Insulation achieves  the required U-Values for this development, whilst reducing the thickness of the roof insulation. The Jablite boards are designed with an overlap to prevent lifting during installation.”

“We are really pleased with the system and the great service. Jablite worked with us to make sure the delivery met the needs of a busy operational site with limited entry routes that are so common with London sites. ”

An inverted roof application maintains the insulation at an even temperature and protects the waterproof membrane from the damaging effects of UV radiation or from the weather.

Jablite Area Sales Manager, Colin Walker, commented, “This is such a great development of luxury apartments and its fantastic to see new life being breathed into the old power station and regenerating such a fantastic piece of historic architecture”.

The Jablite inverted roof range is supplied in 200 or 300 grade boards to meet the specified compression performance. The 200 HP boards were chosen to be used on Compton House due to the thickness requirements of the inverted roof on this development.

Key Benefits of Jablite HP inverted Roof
  • Achieves  A+ in the BRE Green Guide to Specification
  • Available in increments of 1mm from 50mm-250mm
  • U-values as low as 0.10W/m2K can be achieved.
  • 100% recyclable
  • Lightweight and easy to handle
  • Achieves Fire Class E
  • Approved to ETAG 031 standard

Have a similar project?

Call our roofing sales office.

We are happy to help with any insulation queries you may have. Just call the number below.

0870 600 3666