Prestressed Wall Panels.

Prestressed wall panels are stocked in six thicknesses (95, 120, 145, 180, 230 and 280mm), five widths from 500mm to 1500mm (the panel's installed height) and two lengths, 15ft (4572mm) and 20ft (6096mm). Custom lengths to 6500mm and bespoke details are cast to order.

Reinforced concrete uses passive steel bars to handle tension. Prestressed concrete uses high-tensile strands tensioned before the concrete cures, putting the panel into permanent compression. The result: thinner, stronger, longer-spanning panels with far better crack resistance — particularly important for slurry and silage applications.

Standard mix is C40/50 sulphate-resisting with CEM III/A cement (around 50% GGBS) for slurry and cubicles, with silage clamp walls at C50/60 sulphate-resisting, cast with a DC-3 or DC-4 designation where the ground or exposure class calls for it. Lightly reinforced items such as padstones use C40/50 (50 N/mm² at 28 days, CEM I); prestressed panels and robot bases use C50/60 high-strength. A C40/50 low-carbon mix with CEM III/B (around 70% GGBS) is available for retaining walls. Bespoke mixes available on request.

Concrete is non-combustible — as a material it is classified Euroclass A1 without further testing. Fire-resistance performance (the REI classification) is not a property of concrete in general: it depends on the individual unit's thickness, axis distance to the reinforcement, support conditions and load level. Tell us the fire rating your building control or insurer requires and we will confirm the panel specification needed to meet it.

Yes — concrete takes paint, render, timber cladding or stone facing readily. We can supply panels with a smooth as-cast finish, a textured finish, or pre-drilled fixings for cladding battens. Specify at order.

Panels are supplied with cast-in lifting anchors (Halfen-style). Units are delivered by artic or rigid lorry — on site you'll need a telehandler, forklift or crane to unload and position panels, depending on weight.