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Halden & Rue
Foundry 9, a grid of deep-set windows in a restored concrete facade

Project 03Warehouse conversion into offices

Foundry 9

Client
Ancoats Works Ltd
Location
Manchester, United Kingdom
Year
2024
Area
3,800 m²
Duration
19 months
Structural engineer
Hallam Rowe Structures, Manchester
01 — The projectManchester, United Kingdom, 2024

We kept the 1924 concrete frame and gave it another hundred years.

Foundry 9 was built in 1924 as a pattern store for the iron foundries of Ancoats: a reinforced concrete frame with a grid of deep-set windows. It had stood empty for eighteen years when we were asked to turn it into offices.

We repaired the frame rather than replacing it, injecting 2,300 metres of cracks with resin and recasting every window reveal in matching concrete. Keeping the structure saved an estimated 1,900 tonnes of carbon.

Inside, a new steel stair rises through a cut light well, and four open floors carry raised access floors over the original slabs. The tenants moved in ten days ahead of programme.

Site 53°29′02″N 002°13′34″W

Close-up of brushed steel catching soft light
Fig. 02 — Steel stair stringers, brushed by hand
Fig. 03 — Ground floor plan1:200
Detail of Foundry 9
Fig. 04 — Detail of the finished building
02 — Materials and specifications06 items
Structure
Retained 1924 reinforced concrete frame
Repairs
2,300 m of resin crack injection
Windows
Recast reveals, slim steel frames
Floors
Raised access over original slabs
Stair
Brushed steel, made in Rotterdam
Rating
BREEAM Excellent
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