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 » Sisalex 518

Sisalex 518

Moisture barrier and airtight layer

Product photo: Sisalex 518, moisture barrier and airtight layer
Application photo: Sisalex 518, moisture barrier and airtight layer
Application photo: Sisalex 518, moisture barrier and airtight layer

Four-layer barrier against damp and moisture.

  • High sd value, more than 1500 m = absolutely airtight
  • Moisture-resistant, well suited for e.g. swimming pools
  • PE backing makes the membrane alkali-resistant
  • Increased resistance to tears by nails
  • Can be laid directly on cement-based building materials

Four-layer barrier against damp and moisture consisting of an aluminium and PE layer and a reinforcement consisting of heat-treated continuous filaments with a PP filling layer (100% polypropylene). Suitable for exhaust insulation.


10 Jahre Ampack Garantie

CE 13984:2013

ISO 9001

Article numberDescriptionRoll dimensions

7640115536457

Sisalex 518

1,5 m × 50 m = 75 m2

Property Value Standard
Harmonised European Standard EN 13984:2013
Product description Type A EN 13984:2013

Mass per unit area

175 g/m2

EN 1849-2

Straightness

< 75 mm/10 m

EN 1848-2

Fire behaviour

E EN 13 501-1 / EN ISO 11925-2
Waterproofing approved at 2 kPa EN 1928, procedure A

Water vapour permeability, sD value

> 1'500 m EN 1931

Maximum tensile strength longitudinal / transverse

180 / 160 N

EN 12 311-2, without support liner EN 13 859-1, Appendix A, with support liner

Elongation longitudinal / transverse

20 / 15 %

EN 12 311-2, without support liner EN 13 859-1, Appendix A, with support liner

Resistance to tearing (nail) longitudinal / transverse

180 / 180 N

EN 12 310-1 without support liner EN 13 859-1, Appendix B, with support liner
Hazardous substances none
Visible defects none
Values after artificial ageing

Water vapour permeability, sD value

approved EN 1296, 70°C / EN 1931
Technical data sheets
pdf Technical data sheet: Sisalex 518 Technical data sheet: Sisalex 518, moisture barrier and airtight layer
Declarations of performance
pdf Declaration of performance: Sisalex 518 Declaration of performance: Sisalex 518 1,5 x 50 m, moisture barrier and airtight layer
pdf Declaration of performance: Sisalex 518 Declaration of performance: Sisalex 518 1,5 x 50 m, moisture barrier and airtight layer V2
Tendering texts
pdf Tendering text: Sisalex 518 Tendering text: Sisalex 518, moisture barrier and airtight layer
Product inserts
pdf Product insert: Sisalex 518 Product insert: Sisalex 518 1.5 x 50 m, moisture barrier and airtight layer
Product photos
jpg Product photo: Sisalex 518 Product photo: Sisalex 518, moisture barrier and airtight layer
Application photos
jpg Application photo: Sisalex 518 Application photo: Sisalex 518, moisture barrier and airtight layer
jpg Application photo: Sisalex 518 Application photo: Sisalex 518, moisture barrier and airtight layer

Apply the moisture barrier Sisalex 518 on the cold side of the thermal insulation with an overlap of 10 cm. Make sure that the printed side with aluminium faces you when applying the barrier. Fresh mortar, cement or other alkali-containing products have no effect on the product. Join the overlapping ends with Ampacoll BK 530 making sure that the strip is under the  overlap and use Ampacoll INT or Ampacoll XT as additional protection. Used as vapour barrier, apply Sisalex 518 on the  warm side. Make sure that the printed aluminium side faces you when applying the barrier. Use Ampacoll INT or Ampacoll XT to join the overlapping ends. In rooms that are subject to constant moisture we  recommend double bonding with  Ampacoll BK 530 and Ampacoll XT. Edges must be joined with Ampacoll BK 530 and secured with an edge strip. Porous, dusty or rough surfaces must be applied with Ampacoll Primax or Ampacoll Airmax. The liquid adhesive Ampacoll RA can also be used for edge connections. In cases of high humidity Ampacoll Superfix is recommended. Please note that one side of the material must be diffusive so that the adhesive can set. Only with this system will Sisalex 518 provide an absolute humidity barrier.

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