Isoflex Isoflex Liquid Rubber Black 2.1Ltr (36010)

£ 39.99INC VAT

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Isoflex Isoflex Liquid Rubber Black 2.1Ltr (36010)

Permanent, highly flexible, black, waterproof coating for roofs. Five times more flexible than bitumen. Adheres to virtually all roofing surfaces and does not crack, peel or perish.

  • Primer Required
  • Suitable for Roofing
  • High Odour
  • UV & Weather-Resistant

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View all: Isoflex Roof Repair

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Rated 5 out of 5 by from Good bit of kit Easy to apply, good coverage, used on a pitched roof to deal some flashing. Only concern was the 48hrs of dry weather required as I live in Wales, so Xmas eve and Xmas day on the roof.
Date published: 2020-12-25
Rated 5 out of 5 by from Best repair sealant used Used this recently on a shed roof, it does what it states. Excellent coverage easy to apply and has given the roof a much longer life free of leaks.
Date published: 2020-07-22
Rated 5 out of 5 by from Great Coverage Does what it says on the tin and has given life to my shed roof
Date published: 2020-05-25
Rated 4 out of 5 by from Reliable fix Have used ‘‘tis product to seal leaking on my van. Prob not the right product for the job but it works a dream. Only draw back is not available in a smaller tin as only needed a little bit.
Date published: 2019-06-11
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Is this compatible with epdm roofs?

If not, what other product would you suggest for epdm roofs? Thanks!
Asked by: Samlab

Is this product suitable for use on a slightly sloping slate roof

What colour will it dry? Can it be painted over if colour not liked? What is correct primer?
Asked by: Chuckygg
Hi thanks for getting in touch. The isoflex black liquid rubber will dry black. You can apply a solar reflective paint over the top. The isoflex special primer is to be used with the isoflex liquid rubber. I hope this helps
Answered by: Isoflex Product Support
Date published: 2021-05-29


Can this fill 3 to 4mm crack on a roof tile. Second, is this an adhesive product, can I use it to hold my lead roof flushing in place against a rendered wall?
Asked by: Hal3036
Thank you for your enquiry. You can build it up in layers to fill this size gaps, but unfortunately the Isoflex Liquid Rubber does not act as an adhesive and would not hold the lead flashing in place. This would need to be addressed using an appropriate adhesive.
Answered by: Isoflex Product Support
Date published: 2021-05-10

Can this product be used on a low pitched Asbestos corrugated roof

I think there are small leaks through the fixing pins where the rubber seals have perished. Would you recommend this product for such use and would I need to use a primer in the first instance?
Asked by: Skmunkee

can you use this as a flashing also?

(1) can this be used to build a flashing between a flat wooden roof and a vertical masonry wall? eg seal the roof with isoflex, and then paint the isoflex up about 6 inches of wall also? (2) if so, would I need any scrim or filler in the point of joint?
Asked by: sapper00
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Brand Isoflex
Coating & Finishes Drying Time Touch-Dry in 12-24 Hours
Coating Finishes Coverage 1sqm per litre
Colour Black
Label Info 1: Signal Word Danger
Label Info 2: Hazard Statements H226 - Flammable liquid and vapourH334 May cause allergy or asthma symptoms or breathing difficulties if inhaled.H317 May cause an allergic skin reaction.H351 Suspected of causing cancer.H335 May cause respiratory irritation.H336 May cause drowsiness or dizziness.H412 Harmful to aquatic life with long lasting effects.
Label Info 3: Precautionary Statements P102 Keep out of reach of children.P101 If medical advice is needed, have product container or label at hand.P280 Wear protective gloves/protective clothing/eye protection/face protection.P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.P304 IF INHALED:P340 Remove person to fresh air and keep comfortable for breathing.P405 Store locked up.P501 Dispose of contents/container to …
Label Info 4: Supplementary Label Info Contains isocyanates. May produce an allergic reaction.
Label Info 5: Hazardous Chemical Content Hydrocarbons, C9, aromatics Diphenylmethane Diisocyanate Polymer 4, 4'-Diphenylmethane Diisocyanate Toluene Diisocyanate
Manufacturer Guarantee 1 Year Guarantee
Pack Size 1
Parent Colour Black
Pieces in Pack/Case 1
Product Type Isoflex Liquid Rubber
Resistant Type UV & Weather-Resistant
Suitable Application Suitable for Roofing
Volume 2.1 Ltr

Hazardous - Delivery unavailable for any offshore location.


Safety Data Sheet (COSHH)