Kalsi Plastics (UK)
The Group's manufacturing powerhouse. From raw polymer compounding to finished building products — all under one roof in Birmingham.
Vertically Integrated Manufacturing
Kalsi Plastics is one of the UK's largest manufacturers of cellular PVC-U building products. Based in Sparkhill, Birmingham, we control every stage of production — from compounding raw polymers to extruding finished profiles and delivering via our own fleet.
This vertical integration means we don't rely on third-party suppliers for our raw materials. We manufacture our own compound in-house, giving us complete control over quality, cost, and supply chain resilience.
In-House Compounding
100% of raw materials manufactured on-site since 2012
Advanced Extrusion
9 energy-efficient extrusion lines with 24/7 production capacity
Own Fleet Logistics
Private delivery fleet covering the UK and Ireland
Complete Building Product Range
From roofline to drainage, we manufacture everything the UK construction industry needs in cellular PVC-U.
Rainwater Systems
Half-round, ogee, square, deep flow, hi-cap, and industrial guttering profiles in white, black, brown, grey, and cast iron effect.
Underground Drainage
BSI Kitemark certified 110mm and 160mm sewer systems with full fitting range.
Roofline
Fascia boards, soffit boards, bargeboards, and accessories in white and woodgrain foils.
External Cladding
Shiplap, featheredge, double embossed, and slatted profiles in 20+ colours.
Soil & Waste
Push-fit and solvent weld above-ground drainage systems for residential and commercial.
MDPE Water Pipe
WRAS-approved blue and black MDPE pipe and compression fittings for mains water supply.
Certified Excellence
Our products meet the highest British and European standards.
BSI Kitemark
Underground drainage certified to BS EN 1401
BBA Certified
British Board of Agrément approved
ISO 9001
Quality management system
WRAS Approved
Water Regulations Advisory Scheme
Ready to Discuss Your Requirements?
Whether you're a merchant, specifier, or contractor, our sales team is ready to help.