How does HydroHALT compare with ‘stick-on’ strips in product performance?

To the best of our knowledge (as of January 2015) there is no Building Standard or Code of Practice promoting the use of high tack butyl adhesive strips to seal shower tray and bath ledge/wall movement joints. There are on the other hand Building Standards and Codes of Practice worldwide promoting the use of a sealant and backer cord to seal movement joints.

In the absence of comparable like for like Codes of Practice recommendations with which to make a comparison, we will focus on the performance of HydroHALT in respect of not just meeting what relevant Codes of Practice there are, but more importantly addressing and overcoming the most frequent causes of leaking seals.

  • Joint Movement
  • Sealing Material Adhesion
  • Sealing Material Deterioration

The HydroHALT Sealing System combines the HydroHALT up-stand strip with Sealux-N adhesive sealant.

In respect of the Sealux-N sealant adhesive, it conforms to EN 15651-1: F-EXT-INT-CC 25LM, EN 15651-2: G-CC 25LM, EN 15651-3: S XS2.

The two most frequent causes of leaking seals are joint movement and sealing material deterioration.

Joint Expansion creates tension and tension can cause a loss of adhesion between the sealing material and an adjoining surface or a splitting of the sealing material between the two adjoining surfaces, consequentially sealing material flexibility and adhesive strength are critical.

The HydroHALT sealing system accommodates joint expansion through both deflection in the strip at its point of contact with the sealant bridge and elongation of the sealant bridge itself.

Seeing is believing. The following information is provided by Sealux with an emphases on photographs and videos to show how the HydroHALT sealing system accommodates joint expansion and how flexible and tenacious Sealux-N is as an adhesive sealant.

Flexibility in a HydroHALT/Sealux-N joint 4.5mm wide x 3.5mm deep.

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Flexibility in a HydroHALT/Sealux-N joint 5mm wide x 7mm deep.

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Tensile adhesion between Sealux-N and the siliconized face of HydroHALT

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Adhesive strength of Sealux-N bonding HydroHALT to a plaster board wall.

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Material Deterioration may occur if there is a failure of the sealing material to withstand exposure to the chemicals, waste matter and thermal fluctuations of the modern shower environment. It is imperative that sealing materials are not just flexible and strong, but also resilient.

Sealux-N is a highly flexible resilient adhesive sealant that conforms to ISO 11300 F+G-25LM and DIN 18545-E. Sealux-N is adheres tenaciously with HydroHALT and after installation remains concealed and protected from direct exposure to the shower environment.

Sealux-N has undergone independent environmental testing in conditions that were deliberately aggressive i.e. materials were fully immersed, test mediums were undiluted, and temperatures were elevated for an exposure period of 500 hours equating to thousands of applications of soap, shampoo, bleach, disinfectant etc.