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Cactus Industrial PMMA-Based Waterproofing Coating

Cactus Industrial PMMA-Based Waterproofing Coating is a solvent-free, rapid-curing and highly flexible liquid-applied membrane system. It delivers durable emergency surface repair and long life cycle waterproofing and corrosion protection. The waterproofing system is applied together with a tough fleece reinforcement to increase membrane strength. It is a solvent-free, 2-component, fast curing and highly flexible methacrylate waterproofing resin system.

Product Type: 2K (2 component) Coating, Solventless & High Solids Coating

Features: Corrosion Resistant, Durable, Excellent Substrate Adhesion, Fast Curing, Good Gap Filling Capabilities, High Reactivity, Highly Flexible, Low Temperature Resistant, UV Resistant, Water Resistant

Application Area: HVAC Ducts

Chemical Family: Methacrylates, Poly(methyl methacrylate) (PMMA)

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Identification & Functionality

Features & Benefits

Key Benefits
  • Fast cure properties ensure the surface will be quickly watertight and Hard Dry after 60 minutes at 20°C and PMMA Catalyst dosage of 2% w/w..
  • 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.
  • Highly flexible and crack-bridging even at extreme sub-zero temperatures.
  • Can be applied to almost all substrates, including variable substrates when combined with appropriate primers.
  • Excellent UV and weather resistance.
  • Solvent-free.
  • Excellent resistance to ponded water.
  • Can be applied in temperatures as low as 0°C up to 30°C.

Applications & Uses

Application Area
Application Areas
  • 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
Application Details
  • Waterproofing Layer: PMMA-based waterproofing liquid coating.
  • For Mixing the Product: Twin paddle mixer, steel container.
  • Method of application: Brush, roller.
  • Thinner: Do not thin.
  • Cleaner: PMMA cleaning agent 10 liter.
PMMA Catalyst Dosages

Substrate
Temperature

PMMA Catalyst

Pot Life

Hardening Time

%w/w.

approx. minutes

approx. minutes

0°C

6

20

80

+10°C

4

15

60

+20°C

2

15

60

Surface Preparation
  • Ensure all areas are clean, dry and free from dust, dirt, corrosion and general surface contamination.
  • All oils, grease, etc. should be removed with suitable degreasing solution.
  • Always prime the substrate see PMMA-Based Universal Primer.
Advice on Application
  • Due to exothermic reaction with mixing process, please ensure the product is mixed in a steel container.
  • First stir the PMMA-Based Waterproofing liquid Coating with a paddle mixer thoroughly.
  • Then add the PMMA Catalyst while stirring the waterproofing liquid coating at a slow speed.
  • Mix for 1 - 2 minutes.
  • You must not dose less than the given quantity of PMMA Catalyst, as this will jeopardize the curing process.
  • You must also avoid overdosing the PMMA Catalyst, as this can likewise lead to serious curing problems.
  • The material must be applied as soon as the PMMA Catalyst has finished dissolving in the resin components.
Equipment Cleaning
  • If work is interrupted or when it is completed, clean the tools thoroughly with cleaning agent within the pot life of the material.
  • This can be done with a brush.
  • Do not use the tools again until the cleaning agent has evaporated fully.
  • Simply immersing the tools in the cleaning agent will not prevent the material from hardening.
Practical Coverage

Practical coverage can vary considerably depending on method of application, surface roughness, weather conditions and complexity of the structure.

Theoretical Coverage

1.3 kg/m² per mm thickness.

Properties

Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Solids by Volume100.0%-
Typical Thickness (Depending on System)1000.0microns per coat-
PMMA Catalyst by Weight2 - 6%-
Viscosity (20°C)2000 - 3000mPa·sDIN 53 015
Viscosity (20°C, Thix)Pasty--
Density (D₄²⁰)1.13g/cm³DIN 51 757
Flash Point10.0°CDIN 51 755
Processing Temperature (Substrate)0 - 30°C-
Adhesive Pull Strength Hardened Statemin. 2N/mm²EN ISO 527
Tensile Stress (Break, Hardened State)3.3N/mm²-
Crack Bridging Hardened State1.55mmEN ISO 527
Elongation at Break Hardened State157.0%EN ISO 527

Safety & Health

Safety Advice
  • Avoid skin and eye contact i.e. wear gloves, goggles, etc.
  • Ensure good ventilation, mechanical if necessary.
  • Store and use away from heat and flame.
  • Do not eat or smoke in the vicinity of work.
  • Wash hands before eating.

Packaging & Availability

Packaging

10kg container.

Storage & Handling

Pot Life
  • At +20°C 100g, 2 % w/w PMMA Catalyst
  • Approx. 15 minutes.
  • Applies only to two component products and refers to the time the mixture remains usable.
Storage & Handling

Storage:

  • Store in a safe place out of the reach of children.

Shelf Life:

  • 6 months if stored in the unopened original container in a dry min. 5°C frost-free location.