Prestigious London development selects BEWI Inverted Roof Insulation

Job Details

Job: Installation of BEWI HP Inverted Roof of London development

Contractor: Tilbury Contracts Ltd

Site: Chelsea Waterfront. Lots Road, London SW10

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

Tilbury needed a BBA-certified system with the required compression and thermal performance. BEWI’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.

BEWI Inverted roof application using BEWI 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 BEWI Inverted Roof Insulation. This roof design incorporated 1600 sq.m. of BEWI 200 grey HP roof insulation on top of a high performance waterproof membrane and finished with a shingle top or precast paving where appropriate.

BEWI 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 BEWI Filter Membrane, laid in 300 mm laps overlapping in the downward direction of the flat roof slope. This is an integral part of BEWI’s inverted roof system and reduces the cooling effect of water penetration, improving the overall thermal performance of the roof system.

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

“We are really pleased with the system and the great service. BEWI 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.

BEWI 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 BEWI 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.

Find out more here

• 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