Basildon & Thurrock University Hospital
Bauder Total Roof System (BTRS) and LiquiTEC cold applied waterproofing system
Synopsis
Basildon and Thurrock University Hospital’s existing roof was failing in multiple areas, and 80 rooflights needed replacing. The client wanted the refurbishment to make as little impact as possible on the departments directly below which included drug refrigeration, x-ray and ultrasound clinics, patient wards and operating theatres.
Bauder Building Board
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Project:
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Basildon & Thurrock University Hospital
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Location:
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Essex
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Project Type:
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Refurbishment
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Roof Area:
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900m²
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Specifier:
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NHS
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Approved Contractor:
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Breyer Construction
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Products applied
LiquiDETAIL
Cold applied liquid fast curing waterproofing resin, for use on upstands and details.
Project challenges
The plant on the rooftop could not be turned off or raised and many of the AC units and boilers had to be left running due to the nature of the rooms below. Certain areas had to be repaired before others and detailing under and around the plant that could not be raised was almost an impossible task. When working around the plant, COSHH regulations had to be considered and adhered to.
The result
Coordinating with both the client and approved contractors was key in this project, and by using cold liquid applied waterproofing the contractors could ensure a watertight seal with quick application, allowing them to complete the remainder of the roof using reinforced bitumen membrane, and meet the tight project deadline of 12 weeks.
System installed
Bauder Total Roof System (BTRS)
Suitable for a variety of applications on both new build and refurbishment projects and can be used in warm, cold and inverted roof scenarios.
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1 Bauder K5K
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A top quality, heavy duty, torch-applied SBS elastomeric bitumen capping sheet. The product features a spunbond polyester reinforcement to allow the finished product to cope with structural movement without fracture, and a mineral finish to provide protection against UV degradation.
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2 BauderTEC KSA DUO 35
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A 3mm thick technically advanced self-adhesive elastomeric bitumen underlayer with DUO lap technology and glass lattice reinforcement.
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3 BauderPIR FA G16 Tapered (laid to falls)
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Tapered insulation is a lightweight, convenient, easy to install and cost-effective alternative method of providing falls to a roof instead of incorporating them into the structure.
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4 BauderTEC KSD FBS
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A technically advanced, self-adhesive SBS elastomeric bitumen air & vapour control layer, with a mica finished upper surface to allow easy bonding of insulation using the specified Bauder insulation adhesive.
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LiquiTEC Roof System
The Bauder LiquiTEC roof systems combine ease of application, fast cure and durability to provide a cold applied liquid waterproofing product second to none.
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1 LiquiDEK with reinforcement layer
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A cold applied liquid fast curing waterproofing resin, for use on the main roof area of the LiquiTEC Roof System. It is applied in 2 coats ‘wet-on-wet’, with a layer of Bauder 110g reinforcement fleece between them. The product is a PMMA based resin and requires the addition of catalyst to trigger curing. It is solvent, isocyanate and halogen free, minimizing its environmental impact.
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2 BauderTEC KSD DUO
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Carrier membrane & Vapour Barrier is a technically advanced self-adhesive elastomeric bitumen vapour barrier with patented “DUO” lap technology. The product features an aluminium foil facing for vapour impermeability.
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Advocacy
Breyer Roofing’s Contracts Manager for the project, Kerry Cutts:
“The main challenge was working around the hospital’s requirements. For example, we provided a weekly plan for the areas we were working in and the rooflights / plant affected. Where possible, we worked out of hours while doing rooflight replacements to minimise any issues. We also worked closely with Bauder to vary the specification when we had to work around live plant. The communication between Bauder and Breyer Roofing was exemplary throughout and I was pleased this completed project was nominated for a national award."