Selftene Base Polyester.

Mineral Selftene Polyester.

Self-adhesive waterproofing elastomeric membrane in polyer-bitumen with lower face coated with a self-adhesive.

Problem

How to lay large thickness professional armoured membranes without using a flame or other heat sources or harmful adhesives 

The aim is to insulate with large thickness armoured membranes without using a flame, or melted bitumen or adhesives. The problem concerns: special industrial areas with a risk of fire or explosion, where use of naked flames is forbidden; laying on easily combustible surfaces, but where it is necessary to create a single-layer or standard double-layer ‘stratigraphy’, using large thickness armoured membranes (professional single- or double-layer waterproofing).

Solution
The Index Selftene series consists of very thick elastomeric (SBS) polymer- bitumen membranes reinforced with a non-woven composite polyester fabric stabilised with fibre glass, offering high mechanical resistance and dimensional stability. The bottom face of the membranes is coated with a special self-adhesive elastomeric mass which adheres by simple pressure at ambient temperature. It consists of a special selected mix of Venezuelan bitumen, tackifying resins and radial and linear elastomeric thermoplastic polymers which guarantee long-lasting adhesive properties. The graph shows how, unlike standard bitumen mixes, Index Selftene’s adhesive mass maintains its adhesive properties during the storage test and the subsequent graph shows how its formulation with special ‘anti-freeze’ additives allows it to maintain its high adhesive power even at low temperatures during the cold adhesive test. The bottom adhesive face of both membranes is protected by a silicone coated film, which should be removed during laying. The top face of Index Selftene base polyester is also protected by a silicone coated film. When the film is removed, this makes it possible to make joints by self-adhesion without any waste, no matter how the roll is cut. The upper face is provided with a longitudinal overlap strip protected by a small band of silicone film, in order to make application easier, that will have to be removed only when making joints. Either self-adhesive or torched membranes can be applied on the upper face of Index Selftene Base Polyester.

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The top face of Index Mineral Selftene Polyester is self-protected with slate granules, with the exception of a side strip for overlaps, which is protected by a bi-silicone coated film. Whereas the overlaps of the Index Selftene Base Polyester type are always sealed by self-adhesion, in the case of Index Mineral Selftene Polyester, the overlaps at the ends or on the slate, should be sealed by a coat of HEADCOLL adhesive paste,applied between the edges to be joined. Another way of making end joints is to glue, by self-adhesion,the two edges of the mineral type on a 20 cm-strip of base polyester. In this case, the sheets are not overlapped but are brought together end to end. If possible you can torch the overlap.

Advantages
  • Safer and quickly. 
  • No special equipment needed
CE: Intended use of CE marking specified according to the AISPEC-MBP Guidelines.

CE: Intended use of CE marking specified according to the AISPEC-MBP guidelines. EN 13707 – reinforced bitumen sheets for roof waterproofing 

  • Under layer or intermediate layer in multi-layer systems without permanent heavy surface protection – Index Selftene Base Polyester 3,0 kg/m² 
  • Upper layer in multi-layer systems without permanent heavy surface protection – Index Mineral Selftene Polyester 4,0 kg/m² 
  • Single-layer without permanent heavy surface protection – Index Mineral Selftene Polyester 4,0 kg/m² 
  • Under heavy protection in multi-layer systems – Index Selftene Base Polyester 3,0 kg/m²
Fields of Use

Index Selftene membranes are used to make very thick waterproof coats with reinforced membranes, in places where it is forbidden to use naked flames. The membranes are also used on laying surfaces sensitive to heat or easily combustible, such as panels in polystyrene foam, wooden roofs, etc. They are recommended in cases where the use of flames could cause dangerous situations for operators, e.g. in places without any ventilation, or narrow places such as excavations of foundation walls, etc. The mineral self-protected type is designed to be exposed, whereas base polyester should be used in applications not exposed to light or as a base layer under another membrane. 

Technical Characteristics

 

SELFTENE BASE POLYESTER 

MINERAL SELFTENE POLYESTER 

Weight (EN 1849-1) 

±10% 

3,0 kg/m2 

4,0 kg/m2 

Roll size (EN 1848-1) 

≥ 

1.10 m 

1.10 m 

Reinforcement 

“Non-woven” composite polyester stabilized with fibreglass 

“Non-woven” composite polyester stabilized with fibreglass 

Watertightness (EN 1928 – B method) 

≥ 

60 kPa 

60 kPa 

Peel resistance (EN 12316-1) 

–20 N 

– 

NPD 

Shear resistance (EN12317-1) 

–20% 

350/300 N/50 mm 

300/200 N/50 mm 

Maximum tensile force Long./Trasv. (EN 12311-1) 

–20% 

450/400 N/50 mm 

400/300 N/50 mm 

Resistance to impact (EN 12691 – A method) 

800 mm 

700 mm 

Resistance to static loading (EN 12730) 

10 kg 

10 kg 

Resistance to tearing (nail shank) (EN 12310-1) 

–20% 

130/130 N 

120/120 N 

Dimension stability (EN 1107-1) 

≤ 

– 

-0,25/0,10 

Flexibility to low temp. (EN 1109) • after ageing (EN 1926-1109) 

+15% 

-25°C – 

-20°C -25°C 

Flow resistance at elevated temperature (EN 1110) 

≥ 

100°C 

100°C 

Reaction to fire class (EN 13501-1) 

Euroclass F 

Euroclass F 

External fire performance (EN 13501-5) 

Froof 

Froof

Method of Use and Precautions
  • Index Selftene membranes adhere to the most common construction materials: metal surfaces, Plywood, OSB, polystyrene foam and extruded foam, polyurethane foam coated with bitumen-coated feltpaper, on Index Rollbase Holland, etc. On porous surfaces such as cement and brick/tile, on an old bituminous coat, on old wooden board, etc., the surface to be covered should be prepared with a coat of 250 or 500 g/m2 Index Indever primer E
  • Visible sheets applied vertically should be secured mechanically at the end. 
  • For slopes of over 15%, the sets of roof layers including self-adhesive membranes should be carefully designed and, if necessary, integrated with mechanical fastening. 
  • Store the rolls in a dry place indoors and take them to the laying location only when about to be applied. 
  • Open the package immediately before laying. 
  • Polymer-bitumen membranes are thermoplastic products and, therefore, they soften in the hottest hours of summer days, whereas they harden in cold weather and the product’s adhesive power is therefore reduced. 
  • Index Selftene’s excellent performance in cold application does however not provide application of self-adhesive membrane at low temperature without caution. According to the humidity in air and to the surface, at temperature lower than 10°C, you should pay particular attention during the application, foreseeing, if necessary, the use of heating devices or a “light flame”. 5°C temperature remains however the maximum limit for application.
Method of Use
  1. Cleaning the support 
  2. Removal of silicone coated film on the edge 
  3. Nails fitted under the overlap 
  4. Head overlap: cut 45° 
  5. Head overlap: Headcol glue being spread 
  6. General pressing 
  7. Tyle laying
Product Finish

Flamina 

Plastic protection film helping prevent coils from sticking to the roll. As it withdraws under the action of the flame right during its installation, it signals the best melting point in order to correctly glue the membrane to the brackets and rises. When not heated, it can be used as a sliding layer. 

Mineral protection 

On the visible face of the membrane, a protective coating made up of slate granules of various colours is hot bonded. This mineral shield protects the membrane from ageing caused by UV rays. 

Removable silicone coated film 

The lower face of the membrane is covered with a silicone coated film which preserves the face’s adhesive mix. 

Important Note

This data sheet is issued as a guide to the use of the product(s) concerned. Whilst a.b.e.® Construction Chemicals endeavours to ensure that any advice, recommendation, specification or information is accurate and correct, the company cannot – because a.b.e.® Construction Chemicals has no direct or continuous control over where and how a.b.e.® Construction Chemicals’ products are applied – accept any liability either directly or indirectly arising from the use of a.b.e.® Construction Chemicals’ products, whether or not in accordance with any advice, specification, recommendation or information given by the company.

Further Information

Where other products are to be used in conjunction with this material, the relevant technical data sheets should be consulted to determine total requirements. a.b.e.® Construction Chemicals has a wealth of technical and practical experience built up over years in the company’s pursuit of excellence in building and construction technology.