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Mapei Spider P Self Adhesive Roofing

Spider P is a APP modified bitumen membrane, fully self-adhered, no-flame, waterproofing system for roofing and deck applications.

Spider P is a two layer SA bitumen system:

  • 2mm base sheet
  • 3.5kg cap sheet (with mineral chip finish)
Key Features
  • BRANZ Appraised
  • No-flame system, ideal for high risk applications
  • Wind Zones including Extra High NZS 3604
  • 20 year durability warranty
Membrane Roofing
Scope of Use

No flame, self Adhesive system for waterproofing low-pitch roofing, parapets gutters and balconies. Spider P roof and deck membranes have been appraised as roof and deck membranes on buildings with:

  • Plywood and suspended concrete slab
  • Minimum falls for a roof 1:30
  • Minimum falls for decks 1:40
  • Situated in NZS 3604 Wind Zones, up to and including Extra High

Spider P roofing and decking membrane is especially suited for high risk applications:

  • Existing roofing and re-roof applications
  • Heritage buildings
  • Hospitals and schools
  • Public and civil buildings


Limitations on Use

Design requirements;

  • Minimum falls for a roof 1:30
  • Minimum falls for decks 1:40

Spider P membrane system is UV stable, but requires protection if installed on a balcony with a timber raft or tile pedestal system.

Installation requirements:

  • Installation must be completed by Mapei NZ ltd applicators only
  • The installation of  any substrate must be completed by a competent trades person
  • Mapei NZ Ltd technical literature must be followed at all times
NZS 3604 Wind Zone Extra High suitable
Extra High Wind Zone
Statement of Building Code Compliance

This product will, if employed in accordance with the supplier's installation and maintenance requirements, assist with meeting the following provisions of the NZBC:

  • Clause B2 Durability: Performance B2.3.1(b)
  • Clause E2 External Moisture: Performance E2.3.1, E2.3.2
  • Clause F2 Hazardous Building Materials: Performance F2.3.1
In-Service History
  • Member of New Zealand Green Building Council
Other Performance Attributes
  • ISO 9001 (Quality Management)

Warranty and Maintenance

Maintenance requirements:

  • The membrane system must be checked regularly (at least annually) checked for damage rubbish and debris
  • Special care must be taken to ensure all inspections are recorded on the Care and Maintenance document, required by Mapei NZ ltd
  • All remedial repairs must be completed by a Mapei NZ ltd registered applicator 


  • 20 year durability warranty will be given to all registered projects, provided they are designed, used, installed, and maintained in accordance to Mapei NZ ltd technical literature, and are completed by a LBP roofer approved by Mapei NZ ltd
BRANZ Appraised
BRANZ Appraised
Technical Data Sheet

Rev 2-19

Product Technical Statement

Masterspec PTS 110446

BRANZ Appraisal 1101

1101 [2019]

Declaration of Performance


Care & Maintenance Document

Mapei have over 80 years of experience, with innovative quality adhesives, sealants and chemical products and systems for the building industry.

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