Case Study: Pine Street

Pine Street

Project:                             Pine Street


Address:                           Pine Street, Bury Road, Bury, Lancashire, BL9 7BU


Main Contractor:               Tyson Construction


Architect:                           Paddock Johnson Partnership Architects


Size:                                  335m2


System :                            Sika Sarnafil S327-15EL Light Grey, Mech Fixed, Sarnavap 500E VCL, PIR (Foil Faced)

Insulation,Warm Roof


About the project at Pine Street:

The recent development at Pine Street in Bury involved the creation of fifteen new build, 1-bedroom flats within a three-storey building. The property construction also required the creation of a new access roadway and parking as well as drainage and other external works.

The system:

Here at Enviroply Roofing we played an important role in this development, installing a new mechanically fixed, single ply roofing system for the apartment block.

A new roof deck was installed for this project, and the first stage of our installation involved laying the vapour control layer, the Sarnavap 500E. This is a great choice for residential properties, with a high level of flexibility, durability, and high-water vapour resistance, for maximum roof longevity and security.

Installing the insulation layer was the second stage of our construction process. For this we carefully installed PIR (foil faced) insulation. This is a polyisocyanurate rigid foam insulation, with foil facing on each side to maximize thermal efficiency and prevent heat loss through the roof. They also offer a high level of strength for longevity and durability. We installed these insulation boards in a staggered bond pattern, and mechanically fixed these into position in compliance with the manufacturer’s instructions and recommendations.

Finally, to complete the new roof project, we installed the single ply membrane. For this waterproofing layer, the Sika Sarnafil S327-15EL was installed, in a light grey colour. This is made from high quality, polyester reinforced polyvinyl chloride (PVC) and is well known for its durability and longevity, making this is a great choice for the Pine Street development. This membrane is also designed to provide a high level of UV resistance and flame retardant, as well as being fully weatherproof. This membrane was mechanically fixed into place.

Problems and challenges:

The design of this roofing system was a little more complex than others, with membrane coated perimeter trims to be installed to each of the parapet tops, overlapping brickwork and render. In addition, this was an Apex roof, and not a flat roof, with the drainage system designed to allow rainwater to run into the perimeter gutters. As a result, 90mm scupper outlets were installed through the parapet to drain to an external hopper and drainpipe.
No problems or issues were encountered on site during the construction of the roof, as this was carried out during the summer months. Once the main area had been installed, we revisited the site to install the trims, once the brickwork and render had been completed.

The result at Pine Street:

We were pleased with the results, and Sika were happy with the quality of the work which met the standards set for a high guarantee.


Pine Street Pine Street