Spiral staircase, curved balustrading, & premium general glass processing capabilities

In-house Glass Processing

Spiral staircase and other specialty curved glass applications require the very best quality raw materials and impeccable processing techniques. To ensure this, we process (cut, wash, polish, edge etc.) our glass in-house from premium raw glass stock direct from two of the world’s leading suppliers of float glass.

Standard Capabilities

Generally speaking, curves of increasing tightness require increasingly thinner and smaller panes of glass as illustrated in the table below (a pdf can be downloaded here: Curved Glass Specifications & Tolerances). With so many variables for spiral staircases and other curved glass applications, it is worthwhile contacting us to discuss your specific needs.

Curved Glass Specifications & Tolerances

Even Radius Bending

Guide to our other glass processing capabilities (not an exhaustive list)


Dimensions (mm)

Radius (mm)

Thickness (mm)

CNC Edger 4600 x 3250 4,5,6,8,10,12,15,19
CNC Cutter 3800 x 2790  4,5,6,8,10,12,15,19
Straight Line Edger 4000 x 4000  4,5,6,8,10,12,15,19
Washer Scanner 4500 x 2600  4,5,6,8,10,12,15,19
Digitally Printed Ceramic Ink 3900 x 2440  4,5,6,8,10,12,15,19
Heat Soak 3900 x 2440  4,5,6,8,10,12,15,19
Laminates 3900 x 2440  4,5,6,8,10,12,15,19
Toughened (Tempered) 3900 x 2440  4,5,6,8,10,12,15,19
Tightest Curve (Max panel size) 3900 x 2440 1000 5
Tightest Curve (reduced panel size) 2400 x 1000 450 4
Tightest Curve 12mm glass 2400 x 1950 650


(4,5,6,8 & 10 also curves this tightly)

Oversize Capabilities

Glasshape has proven experience with flat toughened, laminated and printed glass up to 7600mm x 3300mm.

It is possible to manufacture flat tempered, laminated and printed glass up to 15000mm  x 3200mm (15 metres x 3.2 metres) – we can work with you to supply to your specification.

Discover the true capabilities of glass

Contact us today