Pitchmastic PmB Limited

Blueshield PmB Roof Waterproofing System

Manufacturer: Pitchmastic PmB Limited 

Materials: Polyurethane 

The Blueshield PmB Roof Waterproofing System comprises:

  • Blueshield PMCS/01 Primer — a single-component, solvent-based primer containing di-phenylmethane di-isocyanate
  • Blueshield PmB Waterproofing — a two-part, solvent-free, blue-pigmented polyurethane elastomer, comprising Part A, PmB PU 0308 (catalyst/blue pigment) and Part B, Desmodur PU 0309

BBA logo

Number: 14/5170
Issue date: 09/07/2018

Approved for use on

Flat Roofs Green Roofs Inverted Roofs Pitched Roofs Protected Roofs Roof Gardens Zero Falls Buried Roofs 

for use as a waterproofing layer on new and existing pitched, flat and zero fall roofs in:

  • inverted roof specifications using aggregate ballast on flat roofs with limited access
  • protected roof specifications using pavers or other suitable protection on flat roofs with limited or pedestrian access
  • green roof specifications (defined as extensive, lightweight systems composed typically of succulents, such as sedum, or other hardy plant species) on flat roofs with limited or pedestrian access, or pitched roofs with limited access
  • roof garden specifications (defined as intensive systems designed primarily for recreational use and requiring structural consideration to accommodate the additional weight) on flat roofs with limited or pedestrian access
  • biodiverse specifications (similar in composition to an extensive roof but designed specifically to create a habitat) on flat roofs with limited or pedestrian access, or pitched roofs with limited access


Concrete Metal 

The system is suitable for use on concrete and metal substrates.


25 Years 

Under normal service conditions, the system will have a service life in excess of 25 years. Where the system is used in a fully protected specification and subjected to normal service conditions, it will provide an effective barrier to the transmission of liquid water and water vapour for the design life of the roof in which it is incorporated.

Installation Requirements

The system is installed by the Certificate holder’s trained operatives.

Fire Safety

The system, when used in inverted roof specifications including an inorganic covering listed in the Annex of Commission Decision 2000/553/EC, can be considered to be unrestricted under the national Building Regulations.

In the opinion of the BBA, when used in irrigated green roof or roof gardens, the system will be unrestricted under the national Building Regulations:

Northern Ireland — Regulation 36(b) If allowed to dry, the plants used may allow flame spread across the roof. This should be taken into consideration when selecting suitable plants for the roof. Appropriate planting irrigation and/or protection should be applied to ensure the overall fire-rating of the roof is not compromised.

The designation of other specifications should be confirmed by: England and Wales — test or assessment in accordance with Approved Document B, Appendix A, clause 1 / Scotland — test to conform to Mandatory Standard 2.8, clause 2.8.1(1)(2) (1) Technical Handbook (Domestic). (2) Technical Handbook (Non-Domestic). Northern Ireland — test or assessment by a UKAS-accredited laboratory, or an independent consultant with appropriate experience.

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Pitchmastic PmB Limited

Kingston House
3 Walton Road
Pattinson North
NE38 8QA

T : 0114 270 0100

E : info@usluk.com

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