|
Page 1 of 3
SELECTING AND SPECIFYING THE PRODUCT
1 Product Description and Suitable Applications
With Sealtec's expertise in waterproof membrane systems and our technical partnership with international membrane manufacturers and suppliers Henkel Polybit Industries Ltd and Pazkar Ltd, the Bituplus Torch Applied Membrane System was developed for:
- Waterproofing structures in contact with earth (horizontal & vertical)
- Waterproofing roofs and other horizontal areas (e.g. balconies, terraces, podiums etc)
- Renovating old roofs and other existing horizontal areas (e.g. balconies, terraces, podiums etc).
Bituplus is suitable for application to concrete, plywood, fibre cement and bituminous surfaces –see Substrate Requirements and Compatibility for full details. |
Sealtec Waterproofing Systems are a complete membrane solution, supported by a range of specialty products to provide assurance and security against the penetration of water in any form.
The Bituplus Torch Applied Membrane System consists of polyester reinforced, polymer modified bitumen membranes, giving the complete system excellent tensile strength, elongation, and tear resistance for superior durability.
Sealtec has incorporated bitumen membrane under flashings, movement joints and extra internal external corner gusseting in critical areas to be applied as part of the system.
Sealtec specify all ancillary products to be used as part of the Bituplus Torch Applied Membrane System for ease of design and application.
|
External use - Structures in contact with earth
i.e. Below Grade Tanking |
External Weatherproofing use:
i.e. Roofs, Podiums, Decks/Balconies |
| This system consists of one layer of Bituplus P3160 torch applied polymer modified bitumen membrane applied directly to a primed concrete or concrete block substrate. |
This system consists of two layers of torch applied polymer modified bitumen membrane:
First layer Bituplus P3160 applied directly to a primed concrete, plywood or compressed sheet substrate, followed by a second layer of either Bituplus P3160, Bituplus P4180 or Polyplast applied directly over the Bituplus P3160 base sheet taking care to stagger sheet joints by at least half a sheet. |
 |
 |
This system creates a plain finish membrane system totalling 3.0mm in thickness.
On completion this system must be protected with Sealtec Star Drain. |
This system creates a plain bitumen or fine mineral chip finish double layer membrane system totalling 6 - 7mm in thickness. |
2 Product List
The Bituplus torch applied membrane system includes these ancillary products;
| Membranes: |
Accessories |
- Bituplus P3160 plain finish 3mm, polyester reinforced, polymer modified bitumen membrane, designed for torch application.
- Bituplus P4180 plain finish 4mm, polyester reinforced, polymer modified bitumen membrane, designed for torch application.
- Polyplast mineral chip finish 3 or 4mm, polyester reinforced, polymer modified bitumen membrane, designed for torch application.
- Elastotight plain finish 2mm, glass fibre reinforced, polymer modified bitumen, self adhesive membrane.
|
- SealPRO Backing Rodpolyethylene foam backing rod in various sizes ranging from 5mm – 50mm.
- Sealtec Roof Vent proprietary aluminium mushroom type vent.
- SealFLOW polypropylene, aluminium or stainless steel droppers, sumps, scuppers and outlets.
- Sealtec Star Drain polyethylene dimpled protective and drainage membrane, complete with a geotextile fabric filter layer.
- Metabronze clamp tight outlets and grates.
- Quickflash aluminium and Colorsteel® Maxx™ flashings.
|
| Sealants: |
Primers: |
- Bitumastic Sealant single component non slump polymer modified bitumen sealant.
- SealPRO 151 single component, paintable non slump polyurethane sealant.
|
- Polyprime WB premium quality; quick drying bituminous emulsion based acrylic primer for timber substrates.
- Polyprime SB premium quality; quick drying solvent based bitumen primer for concrete, fibre cement sheet and masonry substrates.
|
3 Limitations
Limitations for this product are as listed below:
- Not to be used as a trafficable surface.
- Not to be applied over glass or glazed surfaces.
- Tiles are not to be fixed directly to the membrane.
|
- Not to be used in areas subject to negative hydrostatic pressure.
- Not to be used in areas where solvent or petroleum based products may be spilled.
|
Following are weather limitations that will greatly affect the application of this product:
- Do not apply to areas when rain is imminent.
|
- Do not apply when surface temperature is below 5 degrees Celsius or above 35 degrees Celsius.
|
4 Substrate Requirements
Substrates suitable for application of the Bituplus system are:
- Concrete, concrete block, render and masonry.
- External grade plywood.
- Bituminous membranes and bitumen surfaces.
|
- Fibre cement sheeting, plasterboard and structural sheeting.
- Aerated concrete panels and blocks.
- Finish coatings over plain finish membranes should be specifically designed for the purpose, and be solvent free.
|
Please refer to priming details for each of the substrate types before proceeding.
For further information on suitable surfaces and substrates contact Sealtec on 0800 179 000 for correct advice on surface preparation and suitability.
5 Incompatibility with other Building Materials
- Not to be used in areas where solvent or petroleum based products may be spilled.
|
- Not to be applied to glass, perspex, and plastic or glazed surfaces.
|
Product Appraisal by BEAL
|
The Bituplus product has received BEAL Appraisal Number M721
|
|
Warranty
NZBC Compliance
When installed according to the manufacturer’s instructions, the Bituplus Torch Applied Membrane system will meet the Durability performance requirements of NZBC B2.3.1(b) being 15 years and the External Moisture performance requirement of E2.3.2.
When the Bituplus Torch Applied Membrane system is used as a Tanking Membrane and installed according to the manufacturer’s instructions, the system will meet the Durability performance requirement of NZBC B2.3.1(a) being the life of the building being not less than 50 years. |
Methods used for verifying compliance with the relevant performances of the New Zealand Building Code, include Testing and Assessment by a laboratory, Ease of Installation assessment, Assessment of data provided by the manufacturer, and the In-service history overseas and in New Zealand. Details are available from the distributor.
|
|
