Internal Airtight Vapour Control Paint and Radon barrier - Spray & Roller- 11.4KG BIG BOY

Product Collection: Passive Purple Intelligent Membrane
Applied By: Spray or Roll
Colour: Purple
Certification: BS Fire Class C | EN 13501-1:2018, cl. 11
Sample Available Here

Rule of Thumb, you will need 1 tin of brush applied Passive Purple for every 5 tins of spray.

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Key Points:

• Vapour control layer
• Adds an Intelligent Membrane vapour control to Retrofit and Newly installed Spray Foam
• Passivhaus certified
• Airtight liquid applied easy to use paint
• BS Fire Class C
• EN 13501-1:2018, cl. 11
• Smoke tight
• Intelligent Membrane
• ICC tested and certified
• BBA certified
• Great for new builds and Retrofit
• Radon & Methane barrier

Also available in white and a range of different colours, view our product specs for the full selection.

Usage: External or Internal
Applied By: Roller or Spray
Colour: Purple, Black,Cream or White
Size: 10kg
Certification: BS Fire Class B | ASTM Fire Class A
Sample Available Here

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Our Fire Class B Liquid Applied Weather Barrier is an advanced protective solution designed to meet the highest standards of fire safety and energy efficiency. This versatile weather barrier is Passivhaus certified, ensuring airtightness and thermal performance, while also providing robust protection against external weather conditions.

Key Features and Benefits:

• Fire Class B Rated: Specifically designed with fire safety in mind, this weather barrier offers a Class B fire rating, providing enhanced resistance to flame spread and adding an extra layer of safety to your building projects.
• KIWA Approved: Approved as an intelligent moisture management membrane.
• Passivhaus Certified: This product is meticulously engineered to meet the stringent requirements of Passivhaus standards, ensuring optimal airtightness and energy efficiency. It's ideal for creating sustainable, eco-friendly, and low-energy buildings.
• Liquid Applied for Seamless Coverage: Unlike traditional sheet barriers, our liquid applied membrane forms a seamless, continuous layer that conforms to any surface. This eliminates weak spots like seams and overlaps where air or moisture could penetrate.
• Weatherproof Protection: Designed to withstand harsh environmental conditions, it acts as a powerful barrier against wind, rain, and other external elements, ensuring the building envelope remains airtight and protected.
• Versatile Application: Suitable for a variety of substrates, including timber, steel, and concrete, this weather barrier can be applied to both new builds and retrofit projects, making it a flexible choice for a wide range of construction needs.

Why Choose This Weather Barrier?

• Energy Efficiency: Helps reduce energy consumption by minimizing air leakage, contributing to a more sustainable and cost-effective building.
• Fire Safety: Provides peace of mind with a certified fire safety rating, meeting the latest building regulations.
• Long-Lasting Durability: Offers long-term protection against weather and fire, ensuring your building remains safe and energy-efficient for years to come.

With its combination of fire safety, KIWA Approved, Passivhaus certification, and superior weatherproofing capabilities, our Fire Class B Liquid Applied Weather Barrier is the smart choice for those looking to build safe, sustainable, and high-performance structures.

Passive Purple External is a waterproof moisture management coating that helps with dampness and vapour. It is at Passivhaus level and is proven to achieve above the required levels of airtightness to meet building regulations. As an added bonus it is fire class B making it the ideal solution for any building project. It offers methane and anti carbonation protection.

It is the new and intelligent method of moisture management and is preferred to traditional paper membranes because of its fast drying and easy installation using spray and roller. It flexes when the building has movement and has no space inbetween the wall making the coverage fully protected. The fire protection increases safety, whereas traditional paper membranes burn like hell in the event of a fire. It is robust and does not tear.

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Tin Coverage
Masonry: 8m2
Timber: 13m2
Plasterboard: 15m2 per tub

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Not just in purple. Browse our product spec for more colours. 

Product Collection: Poseidon
Applied By: Airless Spray machine. roller or paintbrush
Colour: Blue
Size: 12kg
Sample Available Here

Our waterproof paint for bathrooms and wetrooms is a high-performance solution specifically designed to protect areas exposed to constant moisture, such as behind tiles and other wet zones. This innovative membrane forms a durable, watertight barrier that prevents water ingress, ensuring long-lasting protection for the structural integrity of your wet areas.

Key Features and Benefits:

• Ultimate Waterproofing: This paint creates an impenetrable layer, preventing water from seeping into walls, floors, or substructures in bathrooms, wetrooms, showers, and other high-moisture areas.
• Easy Application: Applied directly behind tiles and wet areas, this waterproof paint is quick to use, making it perfect for both new constructions and retrofit projects. It adheres to a wide range of surfaces, including plasterboard, concrete, and timber.
• Mold and Mildew Resistant: Designed to resist mold and mildew growth, it ensures a healthier, more hygienic environment by preventing moisture buildup that typically leads to these issues.
• Seamless Protection: Unlike traditional waterproofing methods that involve membranes and multiple layers, our paint offers a seamless, uniform application without any joints or seams where water can penetrate.
• Long-Lasting Durability: Built to last, this waterproof paint withstands the rigors of daily exposure to water and humidity, providing reliable protection for the life of the building.

Ideal for:

• Bathrooms
• Wetrooms
• Showers
• Kitchens
• Any area with regular water exposure

With our waterproof paint, you can ensure that your wet zones remain protected, keeping moisture where it belongs and maintaining the beauty and integrity of your tiled surfaces.

This product Adheres to 

• Concrete and concrete blocks
• Bricks
• Cement based plaster
• Plaster (With Supergrip primer)
• Water-resistant plasterboards (with primers)
• Existing tile floors and walls
• OSB
• Plywood
• Chipboard
• Gypsum Moisture Board (With a primer)
• Hardie Board (With a primer)
• Bluclad
• Other substrates suitable for wetrooms

Poseidon liquid applied waterproof membrane is a polymer based coating which, after application, dries to a flexible membrane. It has high crack bridging properties, for the waterproofing of concrete and cement based surfaces in showers, bathrooms, steam areas, wet rooms that need waterproofing prior to tiling.

Apply with an airless paint spray machine, roller or paintbrush. No corner reinforcements are needed.

Any boards with an added water or moisture resistance will need a primer.

Enquire for product availability.

Sample Available Here

Waterproof Blue is the ultimate replacement for traditional plastic membranes like DPCs and DPMs. Designed for superior waterproofing, it can be applied to any area where you'd typically use plastic membranes— such as on top of block and beam floors and the upstands of kicker blocks—creating a seamless, airtight, and watertight barrier for your project. This advanced, VOC-free, water-based solution can be effortlessly applied with a roller or paintbrush, ensuring quick and easy installation. Plus, it provides added protection against radon, enhancing the safety and durability of your build.

Product Collection: The Goat
Applied By: Brush or Roller
Sizes: 18kg
Colours: Black/White (Upon request)
Coverage: 2kg per 1sqm

This product adheres to

• Concrete blocks
• Bricks
• Plastics
• PP
• PE
• uPVC
• Roofing insulation boards (PUR, PIR, XPS, EPS)

The GOAT is a reactive polymer, with quick drying times, and is an innovative solvent-free waterproofing coating. It is applied by brush or roller to form a waterproof and flexible membrane, with excellent adhesion to various surfaces and good UV resistance. It can also be applied on damp surfaces.

The GOAT waterproof coating is suitable for both horizontal and vertical applications and can withstand both positive and negative
water pressure.

Ideal for waterproofing of structures in concrete or masonry such as basement walls, basement roofs, foundations, terraces, balconies and pipe penetrations.

This product can not be painted over. Colours are available upon request and subject to a minimum order.

Product Collection: Fred
Size: 10kg
Colour: Orange
Certification: Class A2-S1, D0, GEV-EMICODE EC1
Sample Available Here

Apply FRED with an airless spray machine or roller. In 1 or 2 layers at the consumption of 0.6 to 2 kg/m2

Fred fire retardant paint – Superior Protection for Spray Foam and Timber Structures

Fred by Intelligent Membranes is an advanced, high-performance fire retardant designed to safeguard spray foam insulation and timber structures from fire hazards. Formulated with cutting-edge fire-resistant technology, Fred provides unparalleled protection while maintaining the structural integrity of your building. Whether you're working on new builds or retrofits, Fred delivers exceptional safety and peace of mind.

Key Features and Benefits:

• Fire-Resistant Protection for Spray Foam: Fred is specifically designed to provide effective fire resistance when applied over spray foam insulation, a material often vulnerable to fire risks. It helps prevent the spread of fire, giving added security to energy-efficient construction projects.
• Ideal for Timber Structures: Fred is also an excellent solution for timber frame buildings, offering a protective barrier that significantly reduces the risk of fire damage. This ensures compliance with fire safety regulations while preserving the natural appeal of timber construction.
• Simple Application: Available as a liquid-applied product, Fred can be sprayed directly onto surfaces, ensuring seamless coverage and a uniform protective layer. Its ease of application makes it a practical choice for both contractors and DIY enthusiasts looking to boost fire protection.
• Non-Toxic and Eco-Friendly: In line with Intelligent Membranes' commitment to sustainability, Fred is formulated with low VOCs and environmentally-friendly components, making it safe for use in all types of buildings, including those aiming for Net Zero and Passivhaus standards.
• Tested and Certified: Fred meets the strictest fire safety standards, ensuring your project is compliant with the latest building regulations. With Fred, you get peace of mind knowing your building has superior fire protection.

Why Choose Fred fire retardant paint?

• Enhanced Fire Safety: Protects spray foam insulation and timber structures from fire risks, reducing the potential for fire spread and property damage.
• Versatility: Suitable for a variety of applications, from homes and commercial buildings to warehouses and industrial settings where fire risk is a concern.
• Seamless Integration: Easily integrates into any project, whether you're constructing a new building or upgrading an existing structure, ensuring thorough fire protection without disrupting your workflow.
• Certified and Reliable: Fred is rigorously tested and certified to meet the highest standards of fire safety, making it the trusted choice for builders, architects, and contractors.

FRED is certified Class A2,-S1, D0.

Fred has a 25 minute Warrington fire test rating - Testing was completed on a load-bearing timber frame wall with a load of 8kN per l/m - Tested to standard BS EN 1365-1 :2012 + corr 2013.

FRED is used inside.

In case of external application, it should be coated with a fire retarding flexible coating such as Passive Purple External or Local building regulations need to be followed which is not the responsibility of the manufacturer of this product, namely Intelligent Membranes.

If Fred is to be spray applied, it must be applied with an intumescent spray machine. Intelligent Membranes would recommend a TriTech T5 spray machine or a machine with similar specifications.

Also available in white and grey - please telephone Intelligent Membranes to discuss these other colours

Product Collection: Passivhaus Brickseal
Applied By: Brush, Roller or Spray
Size Available to Buy Online: 3.2kg (3.76 litres), 6kg (7.06 litres)
Size Available on Request: 20kg (23.53 litres)
Substraints Used On: Brick Fletton, Brick West Hoathley, Mortar, Sandstone Blaxter, Sandstone York, Sandstone Sheffield, Concrete Paving

Sample Available Here

Passivhaus Brickseal – Invisible Protection for Brick and Masonry with Superior Airtightness

Passivhaus Brickseal from Intelligent Membranes is an advanced liquid-applied sealing solution, specifically designed for brick and masonry surfaces. Passivhaus Brickseal delivers invisible protection, creating a weather barrier which prevents moisture from penetrating your walls. Engineered to meet Passivhaus standards, it is perfect for new builds and retrofit projects where both energy efficiency and protection from damp are critical.

Key Features and Benefits:

• Invisible and Seamless Finish: Once applied, Passivhaus Brickseal dries clear, ensuring that the aesthetic appearance of your brick or masonry is not altered. This makes it an ideal choice for protecting heritage or visually sensitive buildings.
• Stops Damp Penetration: Designed to stop damp from seeping through walls, Passivhaus Brickseal forms a water-repellent barrier on masonry surfaces, protecting against moisture infiltration and reducing the risk of damp-related damage over time.
• Brush or Roller Application: Easy to apply using a brush or roller, Passivhaus Brickseal provides full coverage and seamless protection, allowing for a quick and efficient application process on both new and existing structures.
• Long-Lasting Protection: Once applied, Passivhaus Brickseal forms a tough, durable barrier that protects brick and masonry from the elements, preventing moisture damage and weathering while maintaining airtightness for years to come.
• Preserves Building Appearance: The invisible finish ensures that the look and feel of your brickwork or masonry is not compromised, maintaining the building’s original aesthetic.

PassivHaus brick sealer masonry protection paste is a deeply penetrating water-repellent paste for the protection of masonry. The thick, white paste is ready to use and can be applied by brush, roller, or airless spray. It penetrates into the brickwork, masonry, mortar, and concrete, where it will cure to a colourless, natural finish, lasting for a minimum of 15 years. Passivhaus Brickseal paste can help improve the energy efficiency of dwellings by reducing heat loss.

Consumption 4m2 per kg.

Passivhaus Brickseal can not be applied to damp or wet surfaces.

Passivhaus Brickseal can not be applied to any pre-paint surfaces.

Organic material must be removed and treated with a biocide prior to the application of Passivhaus Brickseal.

Sample Available Here

This product is EPD Certified with FREE DELIVERY available. 

Intelligent Protect glass protection film is a 5-star preservation solution for your windows, frames and surfaces. It is a spray-applied, peelable film with high weather resistance.

Using Intelligent Protect with doors and windows slightly open allows you to open and close these doors during construction works without detaching the film. 

Intelligent Protect is unlike any other form of temporary protection. As a spray-applied, water-based, VOC-free polymer, Intelligent Protect offers a complete seal to any substrate that dries itself into an extremely tough polymer membrane. 

UV and weather-resistant, Intelligent Protect surface protection film is for internal and external use that can last up to 18 months, protecting your surfaces throughout the construction phase. 

Let Intelligent Protect eliminate the stress of protecting your valuables throughout the construction phase. Simply apply and peel away after use. 

PLEASE NOTE:

• A 7 Day patch test is required
• It is NOT suitable for wood
• Vaseline MUST be used on all Gaskets before application
• Returns accepted within 14 days of purchase
• Due to its liquid nature and temperature controlled storage requirements, anything past this date will not be accepted
• All returns within this 14 day window MUST be undamaged, unopened and returned to seller at your own cost

Asbestos Sprayed Coating – Decorative Encapsulation Paint

Our Asbestos Sprayed Coating is a high-performance elastic, crack-bridging protective paint designed to safely encapsulate asbestos-containing materials while delivering a clean, decorative finish. Formulated with modified polymers and specialist additives, it seals and stabilises asbestos surfaces such as:

• Asbestos roofing sheets

• Insulation materials

• Old paints and renders

• Other asbestos-based construction elements

Dual Purpose: Protection & Presentation

Unlike many asbestos coatings that require overcladding, our product can be left fully exposed once applied. This means it not only locks in harmful fibres but also transforms the surface with a smooth, attractive finish — perfect for projects where appearance matters.

Key Benefits

• Encapsulates asbestos to prevent fibre release

• Elastic and crack-bridging to handle surface movement

• UV-resistant and weatherproof for long-term exposure

• Suitable for internal and external use

• Can be spray-applied for fast, even coverage

Applications

Ideal for asbestos encapsulation on:

• Industrial and commercial roofing

• Insulated pipework and cladding

• External rendered walls containing asbestos

• Painted asbestos surfaces requiring an upgraded finish

With our asbestos sprayed coating, you can protect public health, comply with safety regulations, and improve the visual appeal of your building — all in one application.

Product Collection: Surface Pro
Size: 20kg
Application: Spray
Placement: Internal

This product is for internal use only.

Surface Pro is biodegradable and natural polymer-based liquid temporary surface protection film that is easily applied with an airless paint spray machine - preferably an AW-1 cleaner. It dries to form a flexible and peelable temporary protection film.

Surface Pro is suitable for different types of porous and non-porous substrates such as: bricks, bathroom shower trays, bathroom tubs, tiled floors, walls and worktops from damage during the construction process.

Product Collection: Supergrip
Applied By: Roller
Size: 10kg

SUPERGRIP is a waterborn primer designed to provide an extra adhesive key on waterbased polymer coatings prior to the application of plaster or plasterbased products.

Once Passive Purple or Passive Purple External / X has dried, simply roller apply Supergrip to give the dot and dab adhesive or plaster that key extra key to adhere to Passive Purple or Passive Purple External / X.

Simply paddle mix the product and then roller apply.

Application to walls and ceilings.

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Applied By: Spray or Roller
Size: 10kg

• Retrofit
• Lime Plaster
• Lime Render
• For use with Passive Purple Retrofit
• Heritage
• Council Retrofit
• Housing Association Schemes

Lime Prime is an interior primer used for Passive Purple systems. Comes in a 10KG container.

Acrylic waterborne ultrafine primer for porous lime and older dusty substrates.

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Why Choose Lime Prime?

Peace of mind

Used as a pre treatment after installation of Passive Purple. The use of this primer will consolidate and close off difficult porous substrates like concrete bricks, calcium silicate stone and lime renders.

Works together with Passive Purple

Due to the high vapour permeability of Lime Prime it can accommodate subtle movements (without cracking). It sits on top of substrates and works in perfect unison with Passive Purple’s high tensile elongation values and is a perfect solution for older buildings that move a lot.

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Primer I.M is an exterior render primer for use in Passive Purple External system. A Waterborne primer, applied on porous and less cohesive substrates, prior to the application of waterborne dispersion coatings. Typically used on older dusty substrates and porous substrates like concrete bricks, calcium silicate stone, renders. Comes in a 10KG liquid container.