Commercial & Industrial Roofing

Why Choose Paramount?

Friars House, Manor House Drive, Coventry, CV1 2TE, is an 11-storey office block built in the late 1980s and comprehensively refurbished, offering a total floor space of 51,223 sq ft. The client reported that the roof of this property had received a number of roof patch repairs to stop water leaks. However, the increasing occurrence of further leaks prompted the client to pursue investigatory work and a full roof waterproofing works

Paramount were engaged on this project to carry out the following processes:

1. Inspect failing roof water tightness
2. Recommend appropriate remedial solution
3. Carry out remedial works

Inspection

An electronic leak detection survey was carried out by Paramount which revealed a large quantity of leaks across the whole roof structure which featured a significant number of services obstructions like air conditioning and a suspended access cradle machine trackway.

This inspection revealed that it was uneconomical to continue with ad hoc maintenance roof patch repairs.

Remedial Solution

Given the state of the roof and installation issues, Paramount assessed a number of different solutions and recommended the application of The Hydrostop EU AH-25 liquid waterproofing system which is a “wet-on-wet”, cold applied liquid waterproofing product that’s fully reinforced with a polyester fabric. AH-25 is free of solvents and isocyanates, fast-curing, easy to apply, delivers superior performance and has significant advantages over conventional liquid roofing systems.

Remedial Works

Risk Assessment & Method Statements
The roof of this property presented many installation challenges arising from the presence of
Telephone masts, HVAC ancillary services and suspended access window cleaning cradle perimeter track support fixings.

In order to apply the system effectively, every single mounting platform for each telephone mast and item of ancillary services equipment had to be released vertically their mountings and jacked up using air bags in order to apply the liquid membrane and substrate properly.

In addition, every single 1 metre upstand support for the suspended access track also had to be dissembled, the AH-25 system applied and ancillary services and track upstands remounting on top of the new roof covering.

In total, a very wide range of service device fixings and over 150 suspended access track upstands had to be lifted.

Risk assessment and method statements reflected this challenge in order to prepare effectively for a successful installation.

Roof Preparation and Temperature Measurement

The existing roof covering was subjected to a high pressure power wash and the temperature of the roof was monitored regularly to ensure subsequent application of the system after preparation between set temperature levels.

AH-25 System Training

Before any on site work could start Graham Cowburn and Patrick Booth had to attend and pass a training course conducted by AH-25 manufacturers, SIG Design and Technology. AH-25 can only be applied by approved contractors and installer training covering theory and practical skills is carried out including a test at the end if the course. Graham and Patrick both received successful course completion certificates.

AH-25 System Installation

Paramount then carried out application of the AH-25 polyester fabric and liquid waterproofing membrane system in strict compliance with the manufacturers guidelines across the 1000 square metre area over a period of 7 days. of the. Periodic inspections were also carried out by SIG personnel.