Crommelin Exterior Grade Waterproofing is a high performance, synthetic rubber based membrane, designed to deliver exceptional waterproofing performance in areas subjected to permanent immersion, areas of non-exposed pedestrian traffic or in application under screeds and toppings. Crommelin Exterior Grade Waterproofing is exceptionally tough, durable and flexible and capable of accommodating structural movement.
Crommelin Exterior Grade Waterproofing is a high performance, synthetic rubber based membrane, designed to deliver exceptional waterproofing performance in areas subjected to permanent immersion, areas of non-exposed pedestrian traffic or in application under screeds and toppings. Crommelin Exterior Grade Waterproofing is exceptionally tough, durable and flexible and capable of accommodating structural movement.
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Crommelin 1L Exterior Grade Brushable Waterproofer
Crommelin Exterior Grade Waterproofing is a high performance, synthetic rubber based membrane, designed to deliver exceptional waterproofing performance in areas subjected to permanent immersion, areas of non-exposed pedestrian traffic or in application under screeds and toppings. Crommelin Exterior Grade Waterproofing is exceptionally tough, durable and flexible and capable of accommodating structural movement.
Crommelin Exterior Grade Waterproofing is a high performance, synthetic rubber based membrane, designed to deliver exceptional waterproofing performance in areas subjected to permanent immersion, areas of non-exposed pedestrian traffic or in application under screeds and toppings. Crommelin Exterior Grade Waterproofing is exceptionally tough, durable and flexible and capable of accommodating structural movement.
The all-time low was $27.85 on 14 July 2025 — today's price is 1% above the lowest ever. This is at or near its all-time low — a good time to buy.
Prices last updated 12 May 2026.
Last updated at 12/05/2026 16:05:05
Crommelin Exterior Grade Brushable Waterproofer 1L / Blue
Crommelin Exterior Grade Brushable Waterproofer 1L
Crommelin Exterior Grade Brushable Waterproofer 1L / Grey
Crommelin Exterior Grade Brushable Waterproofer 1L / Sandstone wash
Crommelin 1L Exterior Grade Brushable Waterproofer - 1L
Delivery $10
Crommelin 1L Exterior Grade Brushable Waterproofer - 1L
Free next-day delivery
Crommelin 1l Exterior Grade Brushable Waterproofer - 1l
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Crommelin 1l Exterior Grade Brushable Waterproofer - 1l
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Crommelin 1l Exterior Grade Brushable Waterproofer - 1l
Delivery $3.99
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
originally posted on bunnings.com.au
Works a treat. 2 coats and problems solved. Exterior concrete roof was leaking and this saved the day
originally posted on bunnings.com.au
Fantastic for leaking caravan roof skylight, tried a few others but this is far superior.
originally posted on bunnings.com.au
Very good solution for sealing a concrete roof. Applies easily with brush or roller.
Crommelin Exterior Grade Brushable Waterproofer 1L / Blue
Crommelin Exterior Grade Brushable Waterproofer 1L
Crommelin Exterior Grade Brushable Waterproofer 1L / Grey
Crommelin Exterior Grade Brushable Waterproofer 1L / Sandstone wash
Crommelin 1L Exterior Grade Brushable Waterproofer - 1L
Delivery $10
Works a treat. 2 coats and problems solved. Exterior concrete roof was leaking and this saved the day
Fantastic for leaking caravan roof skylight, tried a few others but this is far superior.
Very good solution for sealing a concrete roof. Applies easily with brush or roller.
This is good product for waterproofing around your house. It is elastic which guarantee not crack. Just follow the instruction and applied it.
This product was phenomenal and so much better than I could have anticipated. Goes on like paint, dries like silicone. Amazing coverage and waterproofing made easy for large hard to reach surfaces.
Great product for waterproofing, easy to apply with brush, low odour water based so it's really good to me as a chemical sensitive person. Once cured, it's light grey colour low sheen coats with hard rubber- a bit elastic feeling. I used it on newly laid and cured concrete surface and cast-iron surface, it did the job, the adhesion to the clean surface is beyond expectation, one year after application no bubbles were found. But the trick to making it long-lasting was to clean the surface thoroughly especially oily surface, and let it dry before application.
Water based which is fantastic, no odour, easy application and best of all clean up under the tap. Blanket can be used with the product.
Applied this product to new blue board then renderedRender cracked due to poor adhesion of this productContacted Crommelin and was advised should have used a primer,not mention on the packagingIn addition advised my application must have been sub standard!!! Very poor technical advise overallWould not recommend this product in any application
I have/had a leaking tiled balcony which gets full sun. The grouting between the tiles was gradually failing causing leaks. I decided to try this product after many I had used were not up to the job and began to fail after a few months in the sun.This product is performing well and sticks to the glazed tiles and has resisted the UV from the sun whilst remaining flexible and waterproof for over two summers now.It is a must that the surfaces are clean and completely dry. If not you will be doing it all again.I thought if the product any weak point it would be sticking to the glazed tiles. It certainly sticks to them and once cured you will need a scraper to get it off.
Very easy to use and up to now has been effective in preventing and further ingress of moisture
