
Roundwood Park School
Bauderflex bituminous system with BauderSOLAR and Bauder rooflights
Synopsis
A number of the building’s roofs at Roundwood Park School needed refurbishing to prevent further water ingress entering the classrooms below. The client wanted the new waterproofing system to be of high quality and provide falls to the roof to help mitigate ponding water. A no capital outlay PV solution and new rooflights were also desired as part of the works to optimise the roofs functionality.
Buader Building Board
Project | Roundwood Park School |
---|---|
Type | Refurbishment |
Location | Harpenden |
Rood size | 5,200 m2 |
Specifier | Wilby & Burnett |
Approved contractor | Span Roofing Contractors Ltd |
PV funding facilitator | Evogreen Plc |
The specification
All the roof areas were waterproofed with Bauder’s reinforced bituminous system Bauderflex. The system build-up included Bauder’s highly efficient BauderPIR T G tapered insulation providing the required falls to the roof without incorporating them into the structure. 67 Bauder rooflights were also fitted providing essential daylight and ventilation to the building interior.
Bauder’s solar PV system was installed consisting of 470 PV modules whose individual performance can be monitored online; enabling the school to generate at least 130.28 megawatt hours of solar power each year. Bauder worked with sustainable energy funding specialists Evogreen to ensure Roundwood can enjoy all the associated financial benefits of their PV system without any up-front capital costs.
Products applied
Bauderflex system:
This bituminous membrane is resistant to high levels of structural and thermal movement.
Bauder solar PV system:
Our PV system was installed with 470 PV modules being fitted.
Bauder rooflights:
Bauder rooflights are fully compatible with all Bauder waterproofing systems and hold BBA certification.
Project challenges
The school remained open throughout the project creating logistical challenges. However, all roofing works were timed so as not to cause any disruption to ongoing work at the school.
System Build Up
Bauder Reinforced Bituminous Waterproofing System

Bauder Reinforced Bituminous Waterproofing System
with BauderSOLAR and BauderROOFLIGHTS
Our Bauderflex system offers an alternative to the specifier on a tighter budget as it uses thinner elastomeric bitumen membranes compared to BTRS and BTRS PLUS.
Function
Cap Sheet