Garland UK Technical Manager
Justyn Irons
Approved Contractor
DFR Roofing, Stay Dry Roofing
Garland System
StressPly Flex
Sector
Education
The Pool Academy, nestled in the west of Cornwall, has been a long-standing education provider, catering to over 600 11-16 year olds in the local area. Over the years, the facilities team at the Academy had made their best efforts to remedy the growing number of waterproofing issues across the site with quick-fix repairs. Unfortunately due to substantial leaks and relentless water ingress, many classrooms at the site had been forced to shut, causing continuous disruption to students and staff.
Following a strong track record of successful Condition Improvement Fund (CIF) bids, Garland UK was recommended and chosen as the trusted roofing partner to support Pool Academy’s bid process and were soon appointed to collate the essential supporting evidence for the upcoming CIF application.
With a total replacement of over 4,000m2, a phased schedule of works across a 2 year period was adopted to reduce the disruption to the academy as much as possible. Working with main contractor TEC Construction and Approved Contractors DFR Roofing, and Stay Dry Roofing, works commenced with the Garland Technical Manager regularly on-site to oversee the installation.
The Pool Academy roof had an existing layer of bitumen felt with mineral wool insulation, which had become the major cause of the water ingress due to the movement in the poorly designed roof system.
A labour-intensive process was soon underway, to remove the mineral wool which had been mechanically fixed to the structure, before installing a full Garland StressPly Flex Warm Roof system. The system is built up from a newly installed Vapour Control Layer. To this layer, a fully tapered insulation scheme was installed to achieve 0.18w/m2k, the current building regulation requirement, and also to move water off the roof and to the outlet points in a more efficient way. On top of the insulation, a full torch-on system including a vented base sheet and mineral embedded cap sheet was installed.
The roof also had some failing metal roof sections which were suffering from cut edge corrosion and ingress around the fixing points where the perished seals were allowing water directly into the system. This was overclad using a bar and bracket system and additional insulation, to again achieve 0.18 w/m2k, with Garland’s R-MER CLAD system with the new roof being matched to the school’s original colour scheme.
In order to maintain a warm roof system to the residential balconies, Dura-Walk was coated on top of a new bituminous system incorporating VCL (Vapour Control Layer), insulation, plywood and a carrier layer to receive the coating itself. Using a plywood deck ensured a strong surface for the coating, whilst the bituminous membrane enabled the upstand details to be fully encapsulated, providing the much needed extra waterproofing protection.
It was essential for extra measures to be taken to ensure that the green roof was protected as much as possible from the weather elements. The new-build apartments were beach facing and susceptible to strong offshore winds, so to protect the edges of the green roof system from any potential uplift, a natural solution in the form of large pebbles were hand-laid, to secure the vegetation as much as possible.