Rigid PVC — The Ballance Group
Product / Rigid PVC

Rigid PVC
Compounds

Unplasticised PVC compounds manufactured in Europe and supplied to UK processors — engineered for outstanding weatherability, UV resistance, and long-term dimensional stability across construction and building product applications.

Material Data

uPVC
Polymer TypeAmorphous Thermoplastic
Vicat Softening75 — 85°C
Density1.35 — 1.45 g/cm³
ProcessingExtrusion · Injection
ManufactureEuropean
ComplianceREACH · RoHS · BBA
The construction industry's workhorse polymer — delivering decades of maintenance-free performance in the most demanding outdoor environments across the UK.

Rigid PVC — also known as uPVC or unplasticised PVC — is the dominant polymer in UK building and construction products. Its unique combination of weatherability, fire retardancy, chemical resistance, and cost-effectiveness has made it the material of choice for window profiles, pipe systems, cladding, roofline products, and rainwater goods for over 50 years.

Our rigid PVC compounds are manufactured by established European compounders and supplied directly to UK processors. Every formulation is engineered for consistent extrusion or injection moulding performance — with optimised stabiliser systems, impact modifiers, processing aids, and pigmentation to meet your exact application requirements.

From high-impact window profile compounds to UV-stabilised cladding formulations, we source the full range of rigid PVC grades — supported by batch-level QC certification, full REACH compliance documentation, and technical support from our UK-based team.

Key Properties

Performance Characteristics

Rigid PVC offers a unique combination of properties that make it the preferred material for long-life building and construction products.

Weatherability

Outstanding

Exceptional resistance to UV degradation, moisture, and temperature cycling. Correctly formulated rigid PVC products maintain their appearance and mechanical properties for 30+ years in UK outdoor conditions.

Fire Performance

Excellent

Inherently flame retardant with a limiting oxygen index of approximately 45%. Self-extinguishing when the flame source is removed, without the need for additional fire retardant additives.

Chemical Resistance

Excellent

Highly resistant to acids, alkalis, alcohols, and hydrocarbons. This makes rigid PVC ideal for pipe, drainage, and chemical containment applications where long-term media resistance is essential.

Dimensional Stability

Excellent

Low thermal expansion coefficient and minimal moisture absorption ensure tight dimensional tolerances are maintained over time — critical for window profiles and precision-extruded sections.

Impact Strength

Good — High

Impact performance is highly tuneable through modifier selection. High-impact grades exceed the requirements of BS EN 12608 for window profiles, even at low ambient temperatures.

Surface Finish

Excellent

Produces high-quality gloss and matt surface finishes directly from the die. Accepts foiling, lamination, and co-extrusion for woodgrain and coloured finishes on profiles and cladding.

Applications

Built for Construction

Rigid PVC dominates the UK building products market — here's where our European-manufactured compounds are performing on production lines across the country.

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Window & Door Profiles

Casement, tilt & turn, flush sash, and commercial framing systems. High-impact, UV-stabilised compounds with Class S classification to BS EN 12608 for the UK climate.

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Pipe & Drainage

Soil, waste, underground drainage, and pressure pipe systems. Compounds engineered for consistent wall thickness, weld line strength, and long-term pressure performance to BS EN standards.

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Cladding & Roofline

Fascias, soffits, external cladding, and decorative trims. UV-stabilised formulations with excellent colour retention and resistance to chalking over decades of outdoor exposure.

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Rainwater Systems

Guttering, downpipes, hoppers, and rainwater goods. Impact-modified compounds that withstand freeze-thaw cycling, ladder loading, and the mechanical demands of installation.

Cable Trunking

Surface trunking, mini trunking, and conduit systems for electrical installations. Self-extinguishing formulations meeting the fire performance requirements of BS EN 61386.

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Specialist Profiles

Skirting, architrave, corner trims, cavity closers, and bespoke sections. Custom-engineered compounds matched to your specific extrusion tooling and end-use performance requirements.

Our Grades

Rigid PVC Compound Range

European-manufactured rigid PVC compounds covering the full spectrum of building and construction applications — from high-impact window profiles to cost-effective general-purpose extrusion grades.

Window & Door

High-Impact Profile

uPVC · Impact Modified · White / Coloured

Premium window and door profile compound with high impact strength at low temperatures, excellent weatherability, and consistent extrusion behaviour. Formulated to meet BS EN 12608 Class S requirements.

K-Value
67–68
Impact
High (≥10 kJ/m²)
Vicat
≥78°C
Method
Extrusion
Pipe & Drainage

Pressure & Non-Pressure

uPVC · Standard Impact · Grey / White

Pipe-grade rigid PVC compounds for soil, waste, drainage, and pressure applications. Optimised for consistent wall thickness, excellent weld line integrity, and long-term hydrostatic performance.

K-Value
65–68
Impact
Standard–High
Vicat
≥76°C
Method
Extrusion
Cladding & Roofline

UV-Stabilised Exterior

uPVC · UV Stabilised · Full Colour Range

Exterior-grade rigid PVC with enhanced UV stabilisation for fascias, soffits, and cladding. Excellent colour retention, resistance to chalking, and surface quality over decades of outdoor exposure.

K-Value
66–68
UV
Enhanced Stabilisation
Finish
Gloss / Matt / Foil
Method
Extrusion
General Purpose

Standard Extrusion

uPVC · Standard · White / Custom

Cost-effective general-purpose rigid PVC for trunking, trims, internal profiles, and non-structural applications. Reliable processing performance and a competitive price point for volume applications.

K-Value
65–67
Impact
Standard
Vicat
≥75°C
Method
Extrusion / Injection
Processing

Compatible Methods

Profile Extrusion

Primary method for window, door, cladding, and roofline products. All compounds optimised for twin-screw extrusion with consistent die swell and calibration behaviour.

Pipe Extrusion

Single and twin-screw pipe extrusion for soil, waste, drainage, and pressure systems. Formulated for uniform wall thickness and reliable weld line performance.

Injection Moulding

Fittings, junction boxes, and moulded components. Injection-grade rigid PVC with optimised flow characteristics for complete cavity fill and short cycle times.

Co-Extrusion

Multi-layer profile and sheet co-extrusion. Compatible cap-stock and substrate grades for cost-optimised structures with premium surface finishes.

Why Rigid PVC

The Advantages of Choosing uPVC

01

Maintenance-Free

Rigid PVC building products require no painting, staining, or sealing — dramatically reducing lifetime maintenance costs compared to timber, aluminium, or composite alternatives.

02

30+ Year Lifespan

Correctly formulated uPVC products deliver decades of reliable performance in UK outdoor conditions. BBA-certified compounds provide documented evidence of long-term durability.

03

Inherent Fire Retardancy

PVC is inherently flame retardant with no additional fire retardant additives required — simplifying formulation, reducing cost, and meeting building regulations without compromise.

04

Cost-Effective

Competitive raw material cost, efficient processing, and zero maintenance make rigid PVC the most cost-effective material choice across the lifecycle of most building product applications.

05

Fully Recyclable

Rigid PVC is one of the most recycled polymers in the construction sector. End-of-life windows, pipes, and profiles can be reprocessed into new products — supporting circular economy commitments.

06

European Quality

Every compound we supply is manufactured by established European compounders with advanced process control — giving you access to world-class formulation expertise and consistent production quality.

Ready to Source Rigid PVC?

Whether you need a high-impact window profile compound or a cost-effective general-purpose extrusion grade, our team is ready to discuss your requirements and source the right European-manufactured compound for your line.