Raw Materials for PVC Roofing Sheet
Weather resistance and lasting color for PVC roofing exposed to the sun every day.
Common problems
- Roofing yellows or chalks soon after installation
- Brittle sheets that crack during installation or on impact
- Color varies between batches
- Plate-out and dull surfaces on the extrusion line
Typical formulation
PVC roofing faces the sun every day, so the formulation relies on K65 resin, a durable stabilizer, an ACR impact modifier for weather resistance and enough TiO2 for UV protection. A whitener helps keep the color even between batches.
Recommended products
Vinora
Suspension PVC homopolymer in four K-value grades, for extrusion, injection, calendering and blow molding.
Calzora
Lead- and barium-free calcium zinc stabilizers, in powder and liquid form for rigid and soft PVC.
Plumbex
Lead-based stabilizers for pipe, roofing, ceiling, gutters, conduit and cable, in low-dust form.
Stannova
Liquid tin stabilizers for pipe, roofing, ceiling, gutters and clear rigid film.
Endura
Three impact modifier types for rigid PVC: ACR for outdoor use, CPE for pipe and conduit, MBS for clear film.
TiO2
Titanium dioxide for opacity and whiteness, plus UV protection in outdoor applications.
Snowbrite DB
A whitener based on TiO2, optical brightener and ultramarine blue. It offsets the yellow tone of the resin and gives high opacity to white PVC products.
Related articles
How to choose the K-value of PVC resin for rigid and soft products
CPE or ACR: choosing an impact modifier for pipe, roofing and gutters
Tin or CaZn stabilizer for clear rigid PVC film
What causes orange peel on PVC pipes, and how to check for it
Lead or CaZn: what to consider before you switch
Uneven ceiling-panel whiteness: common causes and how to check
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