Chestershed Poly Mineral

Polyester Reinforced Shed Felt Membrane

Chestershed Poly Mineral is a waterproof protection layer for use on portable type buildings with pitched roofs, such as sheds, stables, kennels and non-inhabited buildings. It features a polyester base which is saturated and coated in SBS modified bitumen and finished with light sand on the lower surface and mineral granules on the upper surface.

When installed in accordance with Chesterfelt’s instructions, Chestershed Poly Mineral may be expected to last in excess of 10 years.

Key Features & Benefits:

• Longer life than traditional shed felt

• Natural slate mineral finish

• UV protected

• 10 year life expectancy (when fitted to Chesterfelt instructions)


Chestershed Poly Green

Accreditations and Certifications

Product Information
Product CodeColourRoll LengthRoll WidthPallet Quantity
P146Green10m1m42 rolls
P152Green20m1m25 rolls
P160Charcoal10m1m42 rolls
P158Charcoal20m1m25 rolls

Mineral Surface Protection

The upper surface of the membrane is protected using mineral granules, which are sourced from natural quarrying. The colours of the minerals therefore can sometimes vary depending on seam depths and extraction positions within the quarry. However, after the effects of the weathering and ageing, any variations will become less visible.

Installation Guidelines

This product should be installed in accordance with manufacturer recommendations – please consult the Chestershed Application Guide for more details.


Manufactured in accordance with BS EN 13707:2004+A2:2009 – Flexible sheets for waterproofing. Reinforced bitumen sheets for roof waterproofing.

Handling and Storage

The material should be stored vertically on a firm flat surface, and transported stood on end to avoid damage.

Health and Safety

Health and Safety should be observed at all times in accordance with HSE and industry guidance. Specific Risk Assessments and Method Statements should be produced by contractors where necessary to ensure Working at Heights, Fire Safety and Manual Handling rules are compliant with current law and regulations. Health and safety data sheets are available for all materials on request from Chesterfelt.


UKCA certified & CE Marked to EN 13707:2004+A2:2009.
CE Certificate Number: 0086-CPR-595938.
UKCA Certificate Number: 0086 CPR 753192.

Quality Assurance

Chestershed products are manufactured in accordance with BS EN ISO 9001:2015 – Quality Management Systems (QMS).

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