The Vandex Flexbit Range: Polymer Modified Bitumen Compounds for Basement Waterproofing
  • Floor-wall junction protection in basements
  • Tested for joint openings up to 5 mm
  • Can be applied to external side of basements

For more information call 01403 210204

Vandex Flexbit Range

Polymer Modified Bitumen Compounds for Basement Waterproofing

The Vandex Flexbit range consists of a number of polymer modified bitumen waterproofing compounds that can be applied by trowel or spray.

Flexbit products are particularly suited for application to the external face of underground structures (e.g. basements) that require waterproofing.

A typical basement waterproofing application is shown in the diagram below:

Basement tanking (waterproofing) with Flexbit

In this example Flexbit 2K-P is used as it offers a faster drying time, allowing it to be used in conjunction with Vandex Construction Joint Tape.

Vandex Construction Joint Tape has been embedded between the two layers of Flexbit 2K-P to provide additional protection at the joint between the basement wall and the slab. Finally, Oldroyd Gtx 20 has been used as a combined drainage membrane and protection board – other products from the Oldroyd range of drainage membranes could also have been used for this purpose. It is important to note that the Flexbit layer must be allowed to cure before the Oldroyd Gtx 20 membrane is applied on top.

Flexbit 1K-P and Flexbit 2K-P

Flexbit 1K-P and Flexbit 2K-P are the most popular products Flexbit range – particularly for basement waterproofing applications. As well as a modified bitumen emulsion they contain polystyrene beads – making the products easier to apply and enhancing product flexibility.

Flexbit 1K-P has the advantage of being a single component product.

Flexbit 2K-P is similar to Flexbit 1K-P, but includes a powder component that is mixed into the emulsion before application. The addition of the powder component results in a faster drying time. In summary:

  • Flexbit 1K-P – single component product
  • Flexbit 2K-P – two component product + faster drying time

Flexbit 1K-P and 2K-P are usually applied in two coats by trowel with a typical layer thickness of 3 mm per coat. They can also be sprayed using specialist spraying equipment – please contact our technical department on 01403 210204 or submit an enquiry for details.

In common with the other products in the Flexbit range Flexbit 1K-P and 2K-P benefit from a particularly high bitumen to water ratio. Because Flexbit products contain highly refined bitumen, they benefit from low hazard classifications and have very little odour.

Other Flexbit Products

Other products in the Flexbit range include:

  • Flexbit 1K – Similar to Flexbit 1K-P but without polystyrene beads
  • Flexbit 2K – Similar to Flexbit 2K-P but without polystyrene beads
  • Flexbit V – Low viscosity primer
  • Flexbit S – Formulated specifically for spray application (without polystyrene beads)

These products are not usually held in stock in the UK, but can be ordered on request (please allow 2 - 4 week lead time). For details, please contact our technical department on 01403 210204 or submit an enquiry.

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For more information call 01403 210204