BITUSTICK XL

Description

Cross laminated self adhesive waterproofing membrane

 

Bitustick XL is a self adhesive waterproofing membrane based on a tropical grade of polymer modified bitumen. the bitumen compound is laminated onto an impervious, non-perforated, cross laminated HDPE film. Bitustick XL conforms to the requirements of BS 8102.

Properties

  • Specially formulated for tropical climate grade
  • Provides protection against water and vapor
  • Self adhesive. Requires just peeling off the silicone film and sticking to the surface
  • Excellent adhesion to vertical and horizontal surfaces
  • Excellent resistance to chlorides, sulphates, alkalis and acids
  • Good tear and puncture resistance
  • Excellent tensile strength

This TDS is applicable for the United Arab Emirates only. Please contact your local Polybit sales office for the available TDS in your region

Step by Step

Substrate preparation

The surface shall be cleaned thoroughly of all contaminants like dust, traces of curing compound, oil and grease. All surface imperfections, protrusions, structurally unsound and friable concrete must be removed and repaired.

Priming

Apply Polyprime SB* (Solvent based primer) @4-6 m²/L to a clean, smooth and dry surface by brush, roller or spray. Allow the primer to dry prior to the application of the membrane. The primer promotes the adhesion between the membrane and the concrete surface.

Alignment

Start the installation of all membrane plies from the low point or drains, so that the flow of water is over or parallel to the plies, but never against the laps. All overlaps at the membrane seams shall be installed so as to have "up" slope laps over "down" slope laps. Begin membrane application by unrolling the roll of Bitustick XL  membrane and aligning the side laps. Re-roll the roll halfway and stand on the unrolled portion to prevent shifting. 

Application

Peel off the release film from the self adhesive side and start unrolling the membrane and press it to the surface. Smoothen out the membrane from the center to the edges in order to drive out entrapped air with a wooden press. Furthermore, an iron roller shall be used for rolling on top of the applied membrane to ensure a proper and strong adhesion of the bitumen compound with base surface. Side overlaps shall be a minimum of 50mm on the selvedge and end overlaps 100mm.

Protection

The membrane shall be protected from damage due to ongoing site activities or from aggregates during backfilling by a tough, weather, warp and rot proof asphaltic protection board (Bituboard /Bitustick R300/ Bitustick R400)*. Alternatively, on horizontal areas the membrane can also be protected by laying a cement sand screed (50mm). Bituboard can be fixed with a double sided adhesive bitumen tape (Watertite TS 15)*.