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Ampatex LDA 0.02 plus

Vapour check for renovation

Product photo: Ampatex LDA 0.02 plus, vapour check for renovation
Application photo: Ampatex LDA 0.02 plus, vapour check for renovation

Vapour check for renovation

  • Integrated tape on both side
  • Saves time during installation
  • Cutting and orientation aid
  • Does not tear or snag on nails

Highly permeable airtight three-layer membrane for roof renovation over the support structure. This membrane is highly permeable (sd value 0,025 m) yet airtight (a value: 0,004).

Areas of application

External airtight layer for roof renovations from the outside without removal of existing insulation.


20-year Ampack premium warranty

Conditions for the twenty-year premium warranty include registering the building object and the Ampack products used. In addition, our products must be used as part of a system. For further details, please see our General Warranty Conditions.

CE 13984:2013

ISO 9001

Article numberDescriptionRoll dimensions

7640115535603

Ampatex LDA 0.02 plus
integrated tapes on both sides
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

Resistance to water penetration

W1 EN 1928

Water vapour permeability, sD value

0,02 m EN 1931

Width of overlap

10 cm

Temperature resistance

-40 to +80 °C

Maximum tensile strength longitudinal / transverse

350 / 300 N / 5 cm

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

Elongation longitudinal / transverse

75 / 50 %

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

Resistance to tearing (nail) longitudinal / transverse

260 / 290 N

EN 12 310-1 without support liner EN 13 859-1, Appendix B, with support liner

Cold bending behaviour (flexibility)

-40 °C EN 1109

Resistance to air penetration (a value)

< 0,004 m3/m2 x h x 50 Pa

EN 13859-2, point 4.3.4 / EN 12114
Air tightness airtight
Hazardous substances none
Visible defects none EN 1850-2
Values after artificial ageing

Maximum tensile strength longitudinal / transverse

280 / 240 N/5 cm

EN 13859-1, appendix C, EN 1297, EN 1296

Elongation longitudinal / transverse

280 / 240 N/5 cm

EN 13859-1, appendix C, EN 1297, EN 1296

Resistance to water penetration

W1 EN 13859-1, appendix C, EN 1297, EN 1296
Technical data sheets
pdf Technical data sheet: Ampatex LDA 0.02 plus Technical data sheet: Ampatex LDA 0.02 plus, vapour check for renovation
Declarations of performance
pdf Declaration of performance: Ampatex LDA 0.02 plus Declaration of performance: Ampatex LDA 0.02 plus 1.5 x 50 m, vapour check for renovation
Product inserts
pdf Product insert: Ampatex LDA 0.02 plus Product insert: Ampatex LDA 0.02 plus 1.5 x 50 m, vapour check for renovation
Tendering texts
pdf Tendering text: Ampatex LDA 0.02 plus Tendering text: Ampatex LDA 0.02 plus, vapour check for renovation
Product photos
jpg Product photo: Ampatex LDA 0.02 plus Product photo: Ampatex LDA 0.02 plus, vapour check for renovation

Ampatex LDA 0.02 plus is used as the airtight layer in the restoration of the roof while retaining the insulation between the rafters, when the inside space covering is not airtight. First, the rafters must be fully insulated. Under no circumstances should there be any open cavity between the insulation and top edge of the rafter. Ampatex LDA 0.02 plus is then laid parallel to the eaves and with the printed side facing the moulder on to the existing support structure, formwork or cavity insulation with 10 cm overlap and then nailed (Breitkopf brand nails) or stapled to cover the overlapping area. Bond the overlaps with integrated tape so that they are airtight. Rub the bonding surface thoroughly. Also overlap butt joints by 10 cm and bond with Ampacoll Superfix or Ampacoll XT 60 mm. Joints to inflow sheets and flanging on fireplaces, skylights and other fixtures etc. must be permanently bonded with Ampacoll Superfix and fixed mechanically where
necessary. Penetrations such as ventilation towers, outlet vents, etc. should be sealed with Ampacoll BK 535 butyl rubber tape. Porous, dusty and non-woven substrates must be pre-treated with Ampacoll Primax or Airmax when using Ampacoll BK butyl tapes. Special attention should be paid to the joints of the air-sealing sheet at the eaves and gable end.
The sheet must be attached to the underlying components so that it is airtight. The over-insulation should be installed
immediately after laying the Ampatex LDA 0.02 plus in order to avoid condensation. The following rule of thumb can be applied for the thickness of the over-insulation: it should be about 1∕3 of total insulation thickness. Please note the country-specific heat engineering standards and specifica-tions of the insulation manufacturers.

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