Cornerstone Group
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Retail Unit Single-Ply Roof

Surveying a 15,000 m² retail roof first, then overlaying instead of stripping, to get the most new roof for a fixed budget.

Grey single-ply roof with rows of barrel rooflights on a large retail unit

The problem

The owner of a 15,000 m² retail unit had leaks and failing rooflights, and wanted to refurbish as much of the roof as possible within a fixed budget. Other contractors had all recommended stripping it back to the metal deck.

The solution

We recommended a moisture mapping survey with core sampling first. It showed that around 90% of the roof was dry and fit to overlay, with most of the trapped moisture in the gutters. We stripped and re-insulated the wet areas, overlaid around half of the roof in a polymeric single-ply membrane and fitted triple-skin GRP rooflights.

The result

A far bigger area of new roof for the same budget, without the cost and disruption of a full strip-off.

Project facts
BuildingRetail unit
Area15,000 m²
SurveyMoisture mapping and core sampling
SystemPolymeric single-ply overlay
RooflightsTriple-skin GRP
Roofing gallery

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Photographs from other roofs our team has refurbished. Select any image to enlarge it.

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RoofingGrey single-ply membrane roof with rows of barrel rooflights
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Single-ply flat roof with a perimeter safety guardrail
RoofingSingle-ply flat roof with a perimeter safety guardrail

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