Description
Airtight & Vapour Tight Membrane for Window Connections
Soudatight SP Gun is a premium-quality spray-applied polymer membrane designed to create airtight and vapour-tight seals around window connections and building envelope details. Applied using the specialist Soudatight Application Gun and compressed air system, it forms a seamless, elastic membrane that helps improve building airtightness and energy efficiency.
The membrane adheres to a wide range of porous construction materials and can be applied to slightly moist or slightly dusty substrates. Once cured, it remains permanently flexible and can be painted, plastered or covered with tapes as required.
Soudatight SP Gun changes colour from blue to black during curing, allowing easy visual confirmation of application coverage. Its sprayable format enables fast, uniform installation across large areas while maintaining precise detailing around window reveals and construction interfaces.
Key Features & Benefits
- Spray-applied polymer membrane
- Airtight membrane system
- Vapour-tight membrane
- Creates a seamless seal
- Permanently elastic after curing
- Excellent adhesion to porous substrates
- Suitable for slightly moist surfaces
- Suitable for slightly dusty surfaces
- Colour change from blue to black during curing
- Can be painted after curing
- Can be plastered after curing
- Can be covered with airtight tapes
- Suitable for professional airtightness projects
- Low VOC formulation
- Meets GEV EMICODE EC1 Plus
Suitable Applications
- Airtight window connection sealing
- Vapour-tight window detailing
- Window reveal sealing
- Building envelope airtightness
- Air barrier installations
- Internal window connection details
- External window connection details
- Facade insulation preparation
- Construction joint sealing
- Airtight refurbishment projects
- New-build airtightness systems
Suitable Substrates
- Masonry
- Brickwork
- Concrete
- Plaster
- Porous construction materials
- Slightly moist substrates
- Slightly dusty substrates
Technical Information
- Base: Polymer membrane
- Application Method: Spray applied
- Equipment Required: Soudatight Application Gun and compressor
- Airtight: Yes
- Vapour Tight: Yes
- Membrane Type: Seamless elastic membrane
- Colour Change: Blue to black during curing
- Paintable: Yes
- Plasterable: Yes
- Flexible After Curing: Yes
- Emissions Classification: GEV EMICODE EC1 Plus
Frequently Asked Questions
What is Soudatight SP Gun used for?
It is designed for airtight and vapour-tight sealing of window connections and building envelope details.
Does it require a special application gun?
Yes. Soudatight SP Gun must be applied using the dedicated Soudatight Application Gun and a compressed air supply.
Why does the membrane change colour?
The product changes from blue to black during curing, allowing installers to easily identify coverage and curing progress.
Can it be painted or plastered?
Yes. Once fully cured, the membrane can be painted, plastered or covered with suitable tapes.
Can it be applied to slightly damp surfaces?
Yes. It provides good adhesion to slightly moist and slightly dusty substrates.
Is it airtight and vapour tight?
Yes. The membrane is specifically designed to create airtight and vapour-tight seals around window connections and construction details.
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