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Rapid-curing waterproofing membrane

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A durable solution for pitched and flat roof repair

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Hard dries in just 60 minutes*

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Liquid application allows seamless waterproofing

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Tough fleece reinforcement increases membrane strength

Forms a fully bonded waterproofing coating

PMMA-Based Waterproofing Coating / Waterproof Paint

PMMA-Based Industrial Waterproofing Coating is a solvent-free, rapid-curing and highly flexible liquid applied membrane system. It delivers durable, long-term waterproofing and corrosion protection and is hard dry in just 60 minutes * (see Key Technical Data).

This 2-component, fast reactive system consists of high-grade PMMA-based (polymethyl methacrylate) waterproofing resins. The liquid application allows complete encapsulation of the surface it’s applied to and it cures to form a fully bonded waterproofing coating. It allows seamless waterproofing to large areas and easily incorporates complicated details and penetrations.

The liquid coating system is applied together with a tough fleece reinforcement to increase membrane strength and deliver highly durable emergency surface repair and long life cycle waterproofing. The technology’s high flexibility is retained, even at low temperatures, ensuring good crack bridging property. Its resistant to ponding water, UV resistant and can be applied to almost all substrates, including variable substrates (when used with appropriate primers including PMMA-Based Universal Primer).

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Key Benefits

Fast cure properties ensure the surface will be quickly watertight and Hard Dry after just 60 minutes* (see Key Technical Data for full curing times, temperatures and PMMA Catalyst dosages)
Suitable for use on flat and pitched roof systems, and as a waterproofing roof membrane
Liquid application allows easy, effective waterproofing of large and small surface areas with the most complicated details and penetrations securely incorporated
Seamless application fills in any cracks, gaps and voids as the system adheres to the substrate for a fully bonded waterproof coating
A highly elastic technology that retains its flexibility and good crack bridging property even at sub-zero temperatures
Can be applied to almost all substrates, including variable substrates (when combined with appropriate primers)
Permanently weather-resistant (UV-, hydrolysis- and alkali-resistant)
Fleece reinforcement delivers increased membrane strength, life expectancy and resistance to cracking
Excellent resistance to ponding water
Fast overcoating is possible – if coatings such as PMMA-Based Top Coat / Sealer Coat are also to be incorporated
Cures rapidly – even in low temperatures
Solvent-free. PMMA technology ensures lower health and safety risks
Safe, easy and quick to apply
Can be applied in temperatures as low as 0°C up to 30°C. And for substrate temperatures of -10°C, please refer to PMMA Additive LT Technical Data Sheet
Good Chemical resistance
Theoretical coverage of 1.3kg/m² per mm thickness
Packaged in 10kg container

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Application Areas Include

Flat and pitched roof areas
Metal clad profile roofing areas
Gutter waterproofing
Balcony waterproofing
Deck and Flooring waterproofing
Glass/Glazing waterproofing
Car Parking
Vents and pipes
Rainwater outlets
Parapet walls
Rooflights
HVAC and ducting
Walkways
Many existing substrates

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Product Description:	A solvent-free, 2-component, fast curing and highly flexible methacrylate waterproofing resin system
Product Information:	Volume Solids: 100% Typical Thickness: 1000 microns per coat (depending on system) Theoretical Coverage: 1.3kg/m² per mm thickness PMMA Catalyst: 2 – 6%. See “PMMA Catalyst Dosages”
Application Characteristics – Characteristics of PMMA-Based Waterproofing Coating as delivered:	Viscosity at +20°C: 2,000 – 3,000 mPa · s (DIN 53 015) Viscosity at +20°C (thix): Pasty Density D420: 1.13 g/cm³ (DIN 51 757) Flash point: +10°C (DIN 51 755) Pot life at +20°C: Approx. 15 min. (100 g, 2 % w/w PMMA Catalyst)
Processing Temperature (Substrate Temperature):	0°C to + 30°C

PMMA Catalyst Dosages:

Substrate Temperature:	PMMA Catalyst (% w/w.):	Pot Life (approx min.):	Hardening Time (approx min.):
0°C	6.0	20	80
+10°C	4.0	15	60
+20°C	2.0	15	60

For substrate temperatures of -10°C, please refer to PMMA Additive LT Technical Data Sheet.

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PMMA-Based Waterproofing Coating: Flyer

PMMA-Based Waterproofing Coating: Technical Data Sheet

PMMA-Based Waterproofing Coating: Safety Data Sheet

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What Is PMMA?

PMMA is a two-part methyl methacrylate-based acrylic resin, which cures very rapidly once the catalyst is added shortly before the application. Hence, both the installer and the end customer benefit from labour time which is reduced to a minimum.

Within just an hour from the application, the waterproof coating is hard dry and shortly after this time foot traffic is allowed.

PMMA liquid applied waterproofing is a flame-free system consisting of one coat of primer (if required), PMMA Waterproofing resin coating and reinforcement made of polyester fleece fabric.

Why Use PMMA-Based Waterproofing

This liquid applied, high solids, low odour waterproofing system is a safe waterproof coating that’s very easy to apply and cure rapidly. These systems form a waterproof barrier while ensuring minimal downtime and a quick return to service.

Liquid waterproofing can encapsulate an entire roof seamlessly – including any plant and protrusions, saving valuable time and ensuring high performance waterproofing.

There is no need to remove serviceable existing waterproof membranes before applying. You can also look forward to excellent resistance to ponded water- often the most likely culprit when it comes to dealing with leaks.

PMMA’s advantages are particularly appreciated by roofers and installers on jobs with difficult access, roofs with multiple penetrations, when flame-free application is required and short curing time is essential. PMMA liquid roofing solutions are also a perfect choice for areas requiring resistance to certain substances that may negatively affect traditional roofing products: vegetable oils, environmental contaminations, foot traffic, UV impact.

PMMA resin can produce a wide range of hardnesses and flexibility and offers fantastic levelling properties. Offering the ultimate protection against chemical, mechanical and slip resistance, PMMA-based systems are the ideal solutions for internal or external use.

PMMA Waterproof Coating Applications

PMMA waterproofing coating provides a uniform seamless membrane and can be applied in cooler seasons. The coating will adhere to many common construction materials and almost any properly prepared substrate – steel, concrete, old bitumen roofing, etc. It will provide a perfectly seamless, durable and resistant waterproofing membrane even on complex and difficult roofs.

PMMA acrylic resin is formulated to meet the demands of specific flame-free applications. Not only is it an ideal solution for roof surfaces of all shapes, it is also particularly useful for flashing and details, such as skylights, fans, balconies, railing supports, terraces or as a waterproof roof paint for roofs with many penetrations. Due to its resistance against root penetration characteristics, it can be successfully used for the sealing of green roofs. Our PMMA paint can also be called a liquid rubber waterproof sealant.

For all your PMMA-based waterproofing needs, get in touch with Cactus Industrial today.

SPEAK TO OUR SURFACE SOLUTIONS EXPERTS TODAY

Call +44(0) 1698 591635

Or complete the form below and we will respond to your enquiry.

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