Polyroof 185 and Polyroof 185 non-slip roof waterproofing systems

Approved for use on

Balconies, Terraces & Walkways Green Roofs Inverted Roofs Pitched Roofs Protected Roofs Zero Falls Buried Roofs 

For use as a waterproofing system on flat, pitched and protected zero fall roofs with limited access and internal gutters in warm, cold, inverted and green roof specifications. Polyroof 185 Non-slip is satisfactory for use on verandas, terraces or walkways on flat roofs

Substrate

Timber 

Polyroof 185 and Polyroof 185 Non-slip Roof Waterproofing Systems should only be applied to plywood and OSB3 (orientated strand board) substrates that are approved by the Certificate holder. Where written approval is given by the manufacturer, other substrates may be permitted, where appropriate, provided they comply with NHBC Standards 2018, Chapter 7.

Durability

25 Years 

A GRP laminate constructed in accordance with the Installation Guide and formed in satisfactory weather conditions can be expected to maintain its integrity and show no measurable loss of physical properties for a period of 30 years. However, the systems will have a minimum life expectancy of at least 25 years provided there is no abnormal movement of the roof structure and the roof is subject to the normal regular inspections and maintenance.

When fully protected and subject to normal service conditions in an inverted roof specification with an open covering (eg aggregate pavers), the systems can provide an effective barrier to the transmission of liquid water and water vapour for the design life of the roof in which they are incorporated. However, in situations where maintenance or repair of any of the components in the roof structure are necessary (eg the protection layer or insulation), the durability of the membrane may be reduced. In these circumstances the Certificate holder should be consulted.

An estimate cannot be given for the life of green roof specifications owing to the nature of use; however, under normal circumstances, it should be significantly greater than for exposed waterproof coverings.

Installation Requirements

The systems must only be installed by contractors who have been trained and approved by the Certificate holder.

Fire Safety

A system comprising Polyroof 185 applied to a 18 mm thick plywood substrate, when tested to DD CEN/ TS 1187 : 2012 Test 4 and classified to BS EN 13501-5 : 2005, is designated as BROOF(t4).

The systems, when protected by an inorganic covering (eg gravel or paving slabs) listed in the Annex of Commission Decision 2000/553/EC, can be considered to be unrestricted under the national Building Regulations.

The designation of other specifications (eg on combustible substrates) should be confirmed by: England and Wales — test or assessment in accordance with Approved Document B, Appendix A, Clause A1, Scotland — test to conform to Technical Standard 2.8, clause 2.8.1, Northern Ireland — test or assessment by a UKAS-accredited laboratory or an independent consultant with appropriate experience.

In the opinion of the BBA, when used in irrigated green roofs the systems will also be unrestricted.

If allowed to dry, plants used in a roof garden may allow flame spread across the roof. This should be taken into consideration when selecting the plants. Appropriate planting irrigation and/or protection must be applied to ensure that the overall fire-rating of the roof is not compromised.