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Tremproof APP Sheet membrane:  

 

TREMproof Base Sheets

APP Modified Bituminous Membrane Base Sheets
Key Benefits Summary

  • Formulated specifically for Australian conditions 
  • Temperature resistant to 140*C 
  • Fully compatible with TREMproof torch on membrane 
  • New or remedial projects    

PRODUCT INFORMATION

Tremco provides a choice of 3 different types of Base Sheets depending of roof constructions, fastening system, new or remedial works.

TREMproof BS3
TREMproof BS3 is an APP modified bituminous torch applied membrane base sheet. USAGE/PURPOSE As a base sheet solidly bonded multi layer membrane applications.

TREMproof VBS
TREMproof VBS is an APP ventilated base sheet allowing vapour dissipation with large diameter holes at regular centres.

USAGE/PURPOSE As a ventilated base sheet in TREMproof 4000M applications.

TREMproof FLEECE
TREMproof Fleece is a partically fixed, APP modified bitumen ventilated base sheet.  

USAGE/PURPOSE As a base sheet for remedial work on existing roofs  

PACK SIZE 

  • TREMproof BS3 220103 
  • TREMproof VBS 220104 
  • TREMproof Fleece 220152    

LIMITATIONS

Tremco Base Sheets should not be used as waterproofing membranes on their own.  

 

BS3

VBS

FLEECE

COMPOSITION

Insert random APP modified

reinforced bitumen

fibreglass mat

THICKNESS

2.6 - 3.0mm

1.8 - 2.1mm

1.9mm approx

SURFACE

Silica Sand

Silica Sand

Bitumen

BASE

Torch Off Polypropylene

Torch Off Polypropylene

Fleece

SELVAGE EDGE

75mm

N/A

N/A

PACKAGING

1m wide x 10m rolls

1m wide 20m rolls

1m wide 20m rolls

PRODUCT CODE

220104

220103

220152

USAGE GUIDELINES

SURFACE PREPARATION - TREMproof FLEECE Surface should be free of loose and sharp objects that may penetrate the membrane.  

METHOD OF APPLICATION- TREMproof FLEECE 

TREMproof Fleece can be mechanically fixed or glued to concrete, steel, timber or remedial surfaces TREMproof Fleece can also be loose laid prior to applying waterproofing membrane when using ballasted roof systems 

TREMCO vent caps should be used at approximately 1 vent per 100m2 to allow moisture vapour to escape  

SURFACE PREPARATION - TREMproof BS3 & VBS,  All concrete and masonry surfaces shall be cured for a minimum of 28 days 

  • All voids must be filled and all protrusions removed prior to application 
  • Concrete curing aids should be clear resin based compounds that are UV degrading and do not contain oils, waxes or pigments 
  • Substrate should be broomed clean, free from loose aggregate, from release agent and other contaminants 
  • Concrete should have a smooth wood float finish 
  • Brick or masonry substrates should be rendered to a fine smooth finish
  • PRIMING - TREMproof BS3 & VBS All substrate must be primed with Tremco Bitumen Primer at a rate of 6 to 8m2/litre    

METHOD OF APPLICATION - TREMproof BS3 

Torch apply one layer of TREMproof BS3 with 75mm side laps and 100mm end laps fully heat welded to the primed substrate 

Use extreme care to ensure that all laps are fully heated.  

METHOD OF APPLICATION - TREMproof VBS 

Loose lay or spot torch one layer of TREMproof VBS with 75mm side laps and 100mm end laps to the primed substrate 

When torching top layer make sure bitumen runs through the holes in the VBS and adheres to substrate  

STORAGE Store in a dry place in an upright position in original packaging  

SHELF LIFE 12 months in dry storage  

HEALTH & SAFETY PRECAUTIONS The Material Safety Data Sheet (MSDS) must be read and understood prior to use. TECHNICAL SERVICE    

 

Waterproofing FAQ

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Repair and Maintenance