Waterproof FLAT ROOFS and
TERRACES with 0% slope


Waterproof flat ROOFS and ROOF TERRACES with 0% slope (where ponding occurs or stagnating water may accumulate)

ARCATHANE ROOF WATERPROOFING is a liquid-applied, water based, modified polyurethane membrane used for long-lasting waterproofing of flat roofs and terraces with substandard slope.





Render the membrane foot traffic resistant with ARCATHANE TRAFFICarcathane
Reinforce cracks and joints with ARCAMESH

Complementary and / or Alternative Solutions


1 size: 15 kg


  • monocomponent, easy to apply

  • waterproofs all concrete,cement fibre cement, asbestos cement, masonry an plaster surfaces

  • Arcathane can be applied locally to repair or treat part of the roof
  • Interior/Exterior - waterproof all flat surfaces (standard minimum slope not required)

  • water vapour permeable

  • Resistant to freeze-thaw cycles

  • maintains it mechanical properties in temperature conditions from -15°C to + 70°C

  • renders a seamless 100% waterproof cover

  • durable and resistant to water stagnating

  • Excellent adhesion with no additional fixation or mechanical fasteners

  • the waterproof coating is as quick and easy to apply as paint with standard painting equipment

3 colours:
arcathane colours

Click here to see colour chart


* Note:. The displayed colour will depend on your monitor and browser and certain colours cannot be shown adequately. To visualize the actual colour, ask us for our colour card.

Used to provide a long-lasting waterproof membrane on roofs and terraces with 0% slope, ARCATHANE is a liquid, elastic modified polyurethane membrane based on innovative technology - long-chain polyurethane macromolecules are incorporated in a water medium forming stable dispersions. ARCATHANE offers the high level properties of solvent based products in an ecological, consumer and evironmentally friendly, water-based, low VOC, no ADR transport product.

When waterproofing a roof or roof terrace having a minimum slope of 3%, ARCAROOF can be used.



  • waterproof flat roofs and roof terraces having 0% slope
  • balconies 0% slope
  • terraces 0% slope
  • decks and wet areas (under tile)
  • protection of polyrethane foam insulation
  • waterproof and protect concrete constructions, drywall, cement boards, wood, metal, etc


Instructions for use




Application Conditions
Do not apply in temperatures <5°C or >80°C, if wind, rain, freezing.


Surface Preparation
Optimum performance is achieved by using the right combination of products, surface preparation and application procedures. Careful attention to the preparation of the surface is essential:
  • Surfaces to be coated must be dry, clean, sound and free of all contaminants, loose particles, dirt and dust.
    The humidity of the substrate must not exceed 8%.

  • Scrape and brush off all moss. The surface must be disinfected with a fungicidal product such as ARCAMOSS. Wait 24 to 48 hours before applying ARCATHANE to a treated surface.

  • New concrete surfaces must have been left to dry at least 28 days before applying the ARCATHANE.

  • Old surfaces must be levelled out before application (cracks and irregularities filled in with a polyurethane mastic).

  • Careful sealing of existing cracks and joints before the application is extremely important for long lasting waterproofing results. Fill all prepared cracks and joints with a polyurethane sealant. Let dry min 48 hours.


Application Tools
Apply with a paint brush or roller.

Application on flat smooth surface requiring no reinforcement mesh:
1st coat: Dilute the product with 5 to 10% water and apply. This % will depend on the porosity of your surface. Let dry 24 to 36 hours.
2nd coat: Apply a coat of undiluted product (as you would a paint). Let dry.


Application over repaired joints, cracks or weak spots requiring the use of the reinforcement mesh:
Repaired joints, cracks or weak spots such as protruding pipes, internal angles, chimney flashings etc. must be reinforced with ARCAMESH.
1st coat: Apply the 1st coat ARCATHANE, immediately embed the ARCAMESH (pressing the mesh firmly into the wet coat smoothing out any air bubbles with a dry roller or trowel) and apply a
2nd coat: to firmly embed the mesh and saturate the surface «wet on wet». Let dry 24 to 36 hours.
3rd coat: Apply a coat of undiluted product (as you would a paint). Let dry..


Can be stored in dry and cool rooms for up to 9 months.
Protect the material against moisture and direct sunlight. Storage temperature: 5-30oC. Products should remain in their original, unopened
containers, bearing the manufacturers name, product designation, batch number and application precaution labels.



without Arcamesh: 1,8 kg par m²
Primer coat : 300 g per m²
1st coat : 750 g per m²
2nd coat : 750 g per m² (applied once the 1st coat is dry : 24 hours)

with Arcamesh: 2,6 kg par m²
Primer coat : 300 g per m²
1st coat : 1 kg per m²
Immediately embed Arcamesh in the freshly applied coat and press in to chase out any air.
2nd coat : 1 kg per m², immediately to firmly embed the Arcamesh in the Arcathane
3rd coat : 300 g per m², (applied once the 1st coat is dry : 24 hours)

Dry to touch
(at 20°C): 6 hours
Recoatable: 24 hours minimum.
Curing time: 7 days

with water immediately after use

About Us

Arcane Industries has been developing,creating , and selling waterproof, water repellent, water resistant, decoration products for over 20 years.

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UK DDP Delivery 
Departure from French Manufacturer within 24 hours (excepted for custom colours) Delivery time within 7-21 working days

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Need Help?

We are available to answer your questions on:
020 3151 3120 or by mail: contact@arcane-industries.co.uk

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