soudal_145785

SOUDAL Soudatight LQ air- and vapour-tight membrane black (4.5 kg) - 145785

Supplier number: SOUDAL 145785 | EAN 5411183161283
Recommended Retail Price €59.64
49.60 tax incl.
€40.99 excl. VAT (incl. all environmental contributions)
On stock - immediately available

  • Delivery by DHL

Seamless airtight sealing with Soudal Soudatight LQ

Practical benefits
  • Continuous vapor tight barrier: You create an elastic, seamless membrane after curing that effectively blocks air and vapor leaks.
  • Fiber reinforced crack bridging: Thanks to the integrated fibers, you easily bridge cracks and gaps across various building substrates.
  • Visual curing color check: You immediately verify proper drying because the black formulation changes color as it cures.

In a nutshell

The right choise for

With Soudal Soudatight LQ, you create a continuous airtight and vapour-tight seal across energy-efficient renovation and new-build projects. This liquid paste applies smoothly with a flat brush around window connections, penetrations, floor-to-wall joints, and roof structures. Thanks to its fibre-reinforced formulation, it bridges static cracks and gaps of up to 2 mm without the need for complex taping. Once fully cured, it forms an elastic membrane that can be directly painted or plastered over. The black formulation provides a visual drying check by changing colour from blue to black, ensuring you know exactly when the surface is ready for the next finishing step.



€49.60
In stock - tax incl.

Product information

Key features according to our expert

  • Weight: 4,5 kg
  • Relative density: 1
  • ADR packing group: Not applicable
  • Packaging: Bucket
  • UN number: Not applicable
  • ADR class: Not applicable
  • EUH-statements: EUH208; EUH210
  • Physical state: Liquid

Product description:

  • Soudatight LQ is a high-quality fibre-reinforced polymer paste that, once dry, forms an air- and vapour-tight elastic membrane. Use Soudatight LQ for air- and vapour-tight sealing of penetrations, window, floor-wall, wall-ceiling and roof connections. The product can be applied very easily with a flat brush. Cracks up to 2 mm can easily be bridged thanks to the fibre reinforcement. Soudatight LQ changes colour when dry (= visual check).

Properties:

  • Air- and vapour-tight
  • Fibre reinforced making it suitable for crack bridging up to 2 mm
  • Very good adhesion to many porous materials
  • Good adhesion on slightly damp substrates
  • Permanently elastic after curing and very durable
  • Can be painted over and plastered after drying
  • Meets GEV-EMICODE EC-1 PLUS: very low emission

Applications:

  • For air- and vapour-tight finishing of penetrations, seams, gaps, cracks and openings, wall/floor connections, wall/ceiling connections and window connections such as inside inner leaf (day side) and outside inner leaf (for application of facade insulation).

Instructions for use:

  • Allow Soudatight LQ to reach room temperature before use. Shake or stir well before use. Soudatight LQ is applied to the substrate directly from the packaging using a flat brush. The product should be smeared/coated onto the substrate. Apply the airtightness paste undiluted and evenly in several layers (at least 2) to the substrate to a layer thickness of minimum 1 mm and maximum 3 mm. For best coverage, apply the product at a different angle the second time. It is recommended to apply the 2nd coat only after skin formation occurs with the first coat. The application thickness should be measured (wet) using a thickness gauge. For window applications ensure that the airtightness paste forms a seamless membrane of at least 3 mm on the window frame, over the flexible foam up to ± 5 cm on the day side of the building shell. The use of masking tape (on the window frame) is recommended. However, this should be removed shortly after the application of Soudatight LQ, before curing. For wall connections, ensure that the airtightness paste forms a seamless membrane of ± 15 cm on both surfaces. Before curing, Soudatight LQ can be removed from materials and tools with water.
Supplemental hazard information
  • EUH208: Contains ... (see safety data sheet). May produce an allergic reaction.
  • EUH210: Safety data sheet available on request.

All Features

Weight
4,5 kg
Relative density
1
Adr packing group
Not applicable
Packaging
Bucket
Un number
Not applicable
Adr class
Not applicable
Euh-statements
EUH208; EUH210
Physical state
Liquid
Colour
black
Packaging form
Bucket
Product content
4.5 kg
  • Brand SOUDAL
  • EAN 5411183161283
  • Supplier number SOUDAL 145785

Frequently asked questions about this product

Answered by specialists
What is Soudal Soudatight LQ used for?
It is used to create airtight and vapour-tight seals across penetrations, window connections, floor-wall and roof joints.
How do you apply this sealing paste?
Apply it undiluted using a flat brush in at least two layers to achieve a total thickness of 1 to 3 mm.
Can this membrane be painted or plastered over?
Yes, once fully cured and dried, the elastic membrane can be plastered or painted over directly.
How do you know when the product is dry?
The black version provides a visual drying check by changing colour from blue to black as it cures.
Does this paste bridge cracks and gaps?
Thanks to its fibre-reinforced formulation, it bridges static cracks and joints of up to 2 mm.
Questions about this product?

Our product specialists are happy to help with any questions about this range. Call, email or chat with us!

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