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Liquid Rubber – Waterproof Sealant

Liquid Rubber Waterproof Sealant is quite literally a liquid rubber that can be applied like any normal paint to most common surfaces to waterproof and protect surfaces. Due to it’s amazing adhesion to almost any substrate, it is the most universal sealer and protector for all craftsman and kiwi DIY’ers.

Once applied to a substrate, Liquid Rubber acts as an adhesive and bonds extremely well to the substrate, curing to form a highly flexible and seamless rubber membrane that prevents water infiltration and stops rusting and corrosion. This seamlessness means there are no joins, which is where traditional waterproofing methods can fail.

$72.45 – $616.40

How it works.

As a permanently flexible and seamless coating, Liquid Rubber Waterproof Sealant produces a fully adhered chemical waterproof coating that resists cracking and ageing.

It is applied as a liquid and, when cured, forms a flexible elastic membrane able to withstand stresses and vibrations without cracking or peeling from the surface.

Liquid Rubber Waterproof Sealant is a water based alternative to conventional hot applied or solvent based waterproofing systems.

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Technical Data & Safety Info

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Benefits of Liquid Rubber Waterproof Sealant

  • DIY waterproofing and corrosion protection
  • Long lasting & fast drying
  • Permanently flexible and seamless coatings
  • Resists cracking and ageing
  • Small repairs or larger projects
  • Unaffected by a range of acids, alkali’s and waterborne salts
  • Protects against ultra violet rays, salt & thermal cycling
  • Easy to apply

Liquid Rubber adheres to:

  • Concrete
  • Stone
  • Wood
  • PVC
  • Zinc
  • Bitumen
  • Metal
  • Corrugated Iron

Liquid Rubber Applications

COHE-Waterproof-Roof15
COHE-Waterproof-Roof4
caravan-roof-04-square
COHE-Waterproof-Gutters4
COHE-Waterproof-Deck2
asbestos4
COHE-Waterproof-Tank-4

Coverage

4 Litres
(8 – 10 m2 coverage) – 1 coat

10 Litres
(10 – 20m2 coverage) – 1 coat

20 Litres
(25 – 40m2 coverage) – 1 coat

Use coverage calculator

How to apply Liquid Rubber

Waterproof Sealant is easy to apply using a brush, roller or spray pump and can be applied to most common surfaces. To protect Liquid Rubber Waterproof Sealant from New Zealand’s harsh UV rays and increase the performance and life of the product, it is recommended that one of our Topcoats (Deck or Smooth Coating) are applied over top.

Get one of our Liquid Rubber Application Kits for everything you need!

Buy application kit
roof coating application

Liquid Rubber is ideal for use on:

  • Roofing
  • Flat, Torchdown coatings
  • Asbestos encapsulation
  • Metal Roofing
  • Seams
  • Joints
  • Cracks
  • Connections
  • Penetrations
  • Construction parts
  • Walls
  • Gutters
  • Ponds
  • Decks
  • Balconies / Patios
  • RVs / Caravans
  • Steps
  • Walkways
  • Pool Areas
  • Garages
  • Factory Floors
  • Pipelines
  • Tanks
  • Structures & buildings

Liquid Rubber Waterproof Sealant FAQs

Refer to our DIY section and Product Information Sheets. If you are still unsure, please call us on 0508 Seal it (732 548) or email us on info@cohe.co.nz

Your surface must be clean and dry before applying Liquid Rubber products. It must be free from dust, dirt, oils, varnishes, surface flaking, poorly bonded or glossy paint, sealers, salts or any other substance, which will create a barrier and disrupt Liquid Rubber from adhering properly. Liquid Rubber can then be directly applied just like a paint using a brush, roller or spray gun.
Liquid Rubber can be applied with any normal paint brush or roller. You can also apply our Waterproof Sealant and Smooth Topcoat (but not our Textured Topoat) with a hydraulic piston sprayer. We hire out Spray Machines which can be found on our Shop section.
Liquid Rubber can be applied to virtually anything that is not oil based including concrete, wood, brick, masonary, most metals (iron, steel, galvanised steel, aluminium), butynol, shingles, tiles, difficult roof materials including EPDM, TPO, most PVC, SBS, APP, BURs, propylene, polystyrene, fiberglass and OSB. If you are unsure, please contact us to discuss your requirments.
Liquid Rubber products cannot be applied to silicon, certain smooth or shiny surfaces, e.g. plastic piping and varnishes or oil based paints.
A torch down membrane is a waterproofing membrane used on a flat or nearly flat roof. It is distinguished by seams or joins running parallel.
Liquid Rubber Waterproof sealant can be used to encapsulate the roof. You can’t water blast the roof however, we recommend spraying a moss/mould killer and leaving for one month before hosing off with light pressure from a garden hose. Then spray the liquid rubber over the roof before applying the smooth sealant for UV stability.
Please refer to our coverage guidelines on our product pages under DIY.
At 20°C Liquid Rubber takes 24 hours to fully dry. Please don’t try to peel it off the substrate for 3-4 weeks.
Remove any surface ponding and let it cure before applying another coat over the smooth coating. Apply Waterproof sealant to any affected areas that may have peeled.
Degradation will vary depending on wear and tear of the surface, exposure to UV rays and other corrosive substances. We recommend reapplying when the product visually starts to look as though it is eroding or after ten years.
Yes you can. So long as the surface is clean it will bond to itself.
Although not ideal, you can use methylated spirits and rags to remove
We have Product Information Sheets for our products which provide general information about each product and how to use it. This should be sufficient for the home DIYer. We also have Material Safety Data Sheets (MSDS) which provide more technical product information.
Our Liquid Rubber Waterproof Sealant only comes in black. Our Textured Topcoat and Smooth Topcoat come in a range of standard colours. We can supply colours that are not in our standard range but there is a 20L minimum purchase.
The smallest size we sell is a 1L pottle.
As Liquid Rubber is safe for the user, no protective clothing is required from a safety perspective. However, as Liquid Rubber is difficult to remove from clothing we recommend wearing old clothing or overalls and gloves. This is purely for convenience and aesthetic reasons. Baby oil is useful for removing Liquid Rubber from skin.
Left over product can be stored in a cool dark place with the lid on. Keeping the paint brush in the product insde the pail (assuming it fits without sticking out) may avoid a skin forming on the top of the product. Left over product generally lasts 3-6 months.
Liquid Rubber is water based so can be removed from skin and brushes with any form of liquid soap and water before the product cures (dries). If Liquid Rubber has dried on your skin Baby Oil will help to remove it. Liquid Rubber does not come off clothing easily once it has cured.
No. However, if you are in an unventilated area, we do recommend a mask.
Liquid Rubber is water based, non-toxic, solvent free and contains no VOC’s (volatile organic compounds) so is environmentally safe.

Please refer to our Returns Policy under Delivery & Returns section.

Liquid Rubber products have been developed over 15 years and are available in 26 countries around the world. We stand by our product and pride ourselves on the quality and performance of our product. However, in the unlikely event that you are not satisfied with the performance of your Liquid Rubber product, we will do our best to replace it or give you your money back.
We use Swipe HQ. Swipe complies with global Payment Card Industry Data Security Standards (PCI PTS 3.x). Data is SSL encrypted and securely transferred to their McAfee monitored secure servers.
We import our products from Canada and Australia.
Not ideally. The drier the substrate the better the adhesion will be.

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Size

1L, 4L, 10L, 20L