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Modern architectural building with green roof to provide environmental benefits

Waitrose

New build Waitrose in Bagshot using the Bauder green roof system.

Project Type:
New Build
Sector:
Retail
Environmental Focus:
Extensive Green Roof
System:
Reinforced Bitumen Membrane
Location:
South East

Synopsis

This £14 million Waitrose superstore is built on a brownfield site located in Bagshot, Surrey. The new roof features Bauder’s premium root resistant bituminous waterproofing system, BTGRS, which includes a highly efficient 120mm FA-TE insulation to satisfy the required 0.18 U-value.

  • New Morden building for Waitrose
  • New Morden Waitrose building with Bauder green roof system
  • 3 men installing bauder green roof system
  • rooftop with bauder green sedum system being installed
  • Rooftop with Bauder Total Green Roof System installed
  • Rooftop with Bauder Total Green Roof System installed
  • Modern building with greenery in the foreground
  • Modern architectural building with green roof to provide environmental benefits

Bauder Building Board

Project

Waitrose

Type

New build

LocationBagshot
Roof size

4,800 m²

Specifier

Forum Architecture

Main contractor

Midas Group

Roofing contractor

Span Roofing

The specification

The client wanted the new development to replace the green space lost to the building’s footprint and minimise its overall impact on the surrounding landscape. The Bauder Total Green Roof Systems (BTGRS) provides various environmental benefits including rainwater retention, noise absorption and the creation of new wildlife habitats.

This was achieved through the installation of 4,800m2 of Bauder’s high quality, low maintenance sedum blanket, which is highly visible even at ground level.

Products applied

Bauder Total Green Roof System (BTGRS):

Integrated bituminous roof system incorporating modified root resistant, bitumen membranes and high-performance insulation.

Bauder XF 301 sedum system:

A lightweight, all in one system featuring mature sedum on 20mm of extensive substrate and incorporating a multifunctional water retention and filter layer. 

The result

The pre-cultivated sedum blanket was craned into position onto the roof and then laid in a very similar way to turf to produce a continuous sea of green vegetation on the large waved shape roof. Bauder approved contractor Span Roofing installed over 1,000m² of the lightweight sedum blanket each day, providing instant coverage and greening of the building. The blanket features 11 species of sedums with some mosses and grasses to ensure plant diversity.

All roofing works were completed on time and to budget ensuring there was no delay to the store’s official opening, delivering to the client and local community a striking green roof that acts as a visual reminder of the importance of sustainability.

System Build Ups

Bauder Total Green Roof System (BTGRS) with BauderGREEN XF 301 sedum system

Bauder Total Green Roof System

Bauder Total Green Roof System

(BTGRS)

Visit our Technical Centre for more information
Thickness (mm)5.2
Weight (kg/m2)6 (mass per unit area)
BauderGREEN XF 301
Thickness (mm)28 system only / 34-44 incl. vegetation
Weight (kg/m2)<44 (maximum saturated weight)

Advocacy

Jeffrey Thornton of Midas Group stated:

“Bauder delivered high quality, professional support throughout the project, and Span Roofing demonstrated exception levels of workmanship in the installation of the green roof. This eco-friendly building is undeniably a benchmark for sustainable construction and its roof has played an integral part in achieving this.”