Chesterplus 3B

Traditionally Manufactured Intermediate Waterproofing Layer

Chesterplus 3B is a traditional pour and roll membrane which is normally installed as an immediate layer over suitable venting bases and finished with suitable Chesterfelt capping sheets. It features a glass fibre core which is saturated and coated in high quality bitumen.

When incorporated in a suitably designed and installed multi-layer system, maintained in accordance with BS 8217:2005 – Reinforced bitumen membranes for roofing, Chesterplus 3B will provide reliable performance.

Key Features & Benefits:

• Suitable as both an underlay and intermediate layer on a built-up flat roof

• Can be used as underlay under shed felts and shingles

Accreditations and Certifications

Product Information

Product Code	Roll Length	Roll Width	Pallet Quantity
P314	20m	1m	30 rolls

Suitability

To complete a full system, Chesterplus 3B is fitted above the venting layer and is overlayed with a suitable Chesterfelt capsheet membrane. When used as part of a multi-layer built up roofing system, it provides reliable waterproofing protection and is suitable for use on a wide range of buildings.

Installation Guidelines

This product should be installed in accordance with manufacturer recommendations and all relevant national standards and codes of practice, including BS 8217:2005 – the code of practice for reinforced bitumen membranes for roofing.

Maintenance and Repair

Routine inspection, cleaning and maintenance of the roof membranes should be based on the recommendation in BS 8217:2005. Should it be damaged either during construction or at later date, then the repairs should be made using the same materials so that the performance of the built-up membranes is retained.

Standards

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.

Certification

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

Quality Assurance

Chesterplus 3B is manufactured in accordance with BS EN ISO 9001:2015 – Quality Management Systems (QMS).