Next Day Free Delivery to London and Most of the UK

Next Day Delivery

Next day and express delivery is available for most products if the order is placed before 2:00 PM.

Clever Shield trade prices with multi-buy discounts available on most products.

Bulk Discount

Trade prices with multi-buy discounts available on most products.

Coating Applicators & Support  Experienced UK coating applicators for liquid coatings and industrial repairs. Qualified technical support Tel: 01268 472358

Phone Orders Welcome

Lines Open: 9am - 5pm, Monday - Friday for orders and technical support T: 01268 472358


Weight: 11KG
Color: Black
Sale price£78.52 inc.VAT


Air- and vapour tight membrane 

Soudatight SP is the sprayable version of Soudatight LQ. This product allows for a very easy, fast and economical application on larger surface areas and connections in between those surfaces (floor to wall, wall to ceiling, etc). Soudatight SP forms an elastic, air- and vapour tight membrane after drying and is an ideal basis for paint or plaster. Combine with Soudatight LQ for optimal results. Soudatight SP can be applied with a professional airless spraying tools, such as an airless gun connected to either a plunger or a membrane pump.

Open technical data sheet

  • Air- and vapour tight
  • Stays elastic after curing and very sustainable
  • Forms a seamless membrane
  • Very good adhesion on many porous materials
  • Good adhesion on slightly moist substrates
  • Good adhesion on slightly dusty substrates
  • Can be painted, plastered or taped after drying
  • Meets GEV EMICODE EC-1 PLUS: very low emission
  • Passive House certified

For air- and vapour tight finishing of wall-floor connections, wall-ceiling connections, wall-wall connections, surfaces (no roof applications) and window connections (inside inner leaf (reveal area)).

Shake or stir well before use. Soudatight SP is applied directly onto the surface using airless or air-assisted spray equipment. The choice of spraying equipment, pressure, gun and spray tip depends on the application. Apply the airtightness liquid paste undiluted and evenly in several layers (at least 2) on the substrate to a layer thickness of minimum 1mm and maximum 3mm. For the best possible coverage, the product is applied the second time under a different angle. It is recommended to apply the 2nd layer only after skin formation occurs at the first layer.

The application thickness must be measured (wet) using a wet film comb. For window applications, ensure that the airtightness paste forms a seamless membrane of at least 3mm on the window frame, over the flexible foam to ± 5cm on the reveal area of the structural work. The use of masking tape (on the window frame) is recommended. This should, however, be removed shortly after the application of Soudatight SP, before curing. For wall connections, ensure that the airtightness paste forms a seamless membrane of ±15 cm on both surfaces.


Technical data sheet

Recommended for all A, A+ and A++ windows and doors or any applications where an airtight seal is required. Sealing gaps where improved thermal and acoustic properties are required. Any joint filling which has high and repetitive movement or where vibration resistance is required. Thermal and acoustic insulation around doors and window frames.

Payment & Security

Payment methods

Apple Pay Google Pay Maestro Mastercard PayPal Shop Pay Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.


Clever Shield Coatings Safe Checkout Guaranteed

You may also be interested in

Trade Customer? 

Get all the benefits of being a trade customer by signing up for an account

  • Monthly Trade Discount Codes
  • Dedicated technical support team
  • Certified hands-on training courses

Recently viewed