Passive Purple Airtight Liquid Vapour Control Membrane Spray - 10kg

Not Available Passive Purple Airtight Liquid Vapour Control Membrane Spray - 10kg

Passive Purple Airtight Liquid Vapour Control Membrane Spray provides a UV-resistant, airtight and...

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Product Information

Full details

The Passive Purple Airtight Liquid Vapour Control Membrane Spray is an ideal solution for construction professionals and contractors looking to achieve superior airtightness and weatherproofing on external facades. It delivers a robust, UV-resistant, and vapor-permeable barrier that helps buildings meet strict energy efficiency standards. While it offers unmatched application speed, users should note that it requires specific airless spray equipment or high-quality rollers for optimal coverage and finish consistency.

All features

Model Part Number	IM/00PPE10
Brand	Intelligent Membranes

Extended Product Information

FAQs

Can Passive Purple be applied in cold weather?

It is recommended to apply the product in temperatures above 5 degrees Celsius to ensure proper curing and adhesion.

Does this product replace traditional breather membranes?

Yes, it acts as a vapor-open airtight barrier that can be used on the external side of the structure to provide both weatherproofing and airtightness.

How do I clean my equipment after use?

Since the product is water-based, all equipment can be cleaned thoroughly with warm soapy water immediately after use.

Is it safe to use indoors?

While designed for external facades, it is VOC-free and safe to use, though it is specifically optimized for external weatherproofing and vapor control.

What is the fire rating of this membrane?

It holds a Euroclass B, S1, D0 fire rating, meaning it has limited combustibility and produces minimal smoke.

How long does it take to dry?

Drying times vary based on humidity and temperature, but it typically becomes touch-dry within a few hours and cures fully within 24-48 hours.

Troubleshooting

Uneven finish or "holidays" in coverage

Adjust the spray pressure on your airless device or use a brush to back-fill areas missed by the spray fan.

Product not adhering to the substrate

Ensure the surface is completely free of oils, loose dust, or moisture. If the surface is highly porous, apply a thin primer layer first.

Nozzle clogging during spray application

Flush the spray line and tip with clean water periodically during the workday to prevent the membrane from curing inside the nozzle.

Pros and Cons

Pros

Significantly faster installation speed compared to traditional sheet membranes
Creates a seamless, airtight barrier without complex taping
Environmentally friendly with zero VOCs
Euroclass B, S1, D0 fire rating provides high safety standards
Versatile application methods including airless spray or rolling

Cons

Requires specific equipment for the most efficient application
Substrate must be properly prepared for maximum adhesion
Not suitable for use as a structural finish; requires external cladding or protection

Setup, Compatibility & Care

To ensure the best results, the substrate must be clean, dry, and free from dust or loose debris. For airless spray application, use a machine capable of handling medium-viscosity coatings and ensure all nozzles are clean to prevent clogging. If applying by hand, use a high-quality roller to maintain a uniform thickness. The product remains flexible after curing, accommodating minor structural movements without cracking. Storage should be in a cool, frost-free environment to maintain the shelf life of the 10kg container. Always test a small area first to ensure full adhesion to your specific substrate type.