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Winkler Win Bituroof 5kg

£20.53 (inc VAT) £17.11 (ex VAT)

Developed by Winkler’s Research & Development laboratory, Win Bituroof is a single component, ready-to-use levelling paste made from water dispersion bitumen.

It is used for levelling out and restoring slopes on bitumen supports (smooth or slate granule coated membranes) before applying a new layer of waterproofing product. It may also be used as cant strip at wall-floor corners.

Winkler Win Bituroof 5kg

Price: £20.53
Inc. VAT
Price: £17.11
Excl. VAT
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At a Glance

  • Ready to use levelling paste made from water dispersion bitumen.
  • Exceptional workability.
  • Easy to apply.
  • Can be used as a cant strip of wall/floor corners.
  • Colour: Brown (black once completely dry).
  • Size: 5kg.

Surface Preparation

  • Clean all substrate surfaces thoroughly in order to eliminate dirt, dust, and loose materials, any form of oil or grease and foreign or bonding-proof matters.
  • Apply only over dry substrates.
  • Modified bitumen membranes must have undergone at least 180 days of oxidation before proceeding with the application of the product.
  • Membranes that are damaged, perforated, feature small humps and depressions or are detached, as well as fish-mouth at overlapping seams shall be repaired and sealed using the rubber-bitumen sealing product Shell Tixophalte.


  • Stir the product thoroughly before use.
  • Win Bituroof is ready-to-use and can be applied with a trowel or a smooth metal spatula.
  • Each layer of product should be no more than 15mm thick (min 2mm).
  • Maximum overall depth: 4 cm.
  • Wait 24 hours between the application of each layer.
  • Protect Win Bituroof from water, rain, snow or high humidity at night for at least 48 hours after application.
  • The waterproofing topcoat can be applied on a dry and clean substrate, within the following 14 days. 
  • Win Bituroof can be used in conjunction with any Winkler waterproofing liquid membrane.
  • New modified bitumen membranes can be applied by light torching or cold-applied using Winglue, Winglue Fast or Winglue Universal*.
  • Recommended application temperatures are between +5°C and +35°C.

Important Information 

  • Do not use additives.
  • Do not use if packaging is damaged.
  • Do not add water and/or solvents


1.6kg - 1.7kg/m² per mm of depth.


This product has a shelf life of 12 months when stored in its sealed, undamaged packaging. It is not frost-proof and must be stored at temperatures between + 5°C and + 35°C.


* Winglue, Winglue Fast, and Winglue Universal are special order items, please contact us to order these products.

Courier Delivery

Max 2 items

Up to 3 working days.

Starting from £15.00.

Palletised Delivery

For 3 or more items

5-7 working days.

Starting from £46.00 per pallet.

You can view our detailed delivery charges and services here.