Bituplus ULTRA P
Bituplus ULTRA P
Plastomeric membrane with excellent heat & UV resistance and waterproofing properties
Properties
- Polymer rich compound. Easy and strong seal on overlaps.
- High flexibility. Easy application on corner profiles and detailings.
- High softening point. Does not leave shoe
- imprints or makes the bitumen sticky during high temperature applications.
- High resistance against hydrostatic pressure.
- Good dimensional stability under tension.
- User friendly printed films with stick timer aids easy and correct application.
- High mechanical strengths and fatigue resistance properties.
Description
Bituplus ULTRA P is a plastomeric high performance bitumen based torch applied waterproofing membrane. The Bituplus ULTRA P range of waterproofing membranes has been developed with special selected components and advanced technologies, in order to offer premium quality and superior features and performance, even under extreme conditions. The right blend of the high quality bitumen and polymers, coupled with various reinforcements, provides excellent resistance to high hydrostatic pressure and better flexibility, strength and heat resistance. In order to offer a superior sealing of the overlap joints, the polyester used as the carrier is positioned in a carefully chosen position, while the innovative enhanced thermofusible film applied on the membrane has clear demarcation lines for proper alignment of the membranes with the recommended overlap area.
- 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 Bituplus ULTRA P membrane and aligning the side laps. Side overlaps should be a minimum of 100 mm and the end overlaps 150mm.
Torching
Bituplus ULTRA P membrane is installed by using a cylinder fed propane gas torch. Use of hand-held roofing torch is recommended as it affords a good control. Begin torching the embossed polyethylene side of the rolled portion of the membrane. As the membrane is heated the embossing starts to melt away exposing a shiny bitumen surface. Roll forward the membrane and press firmly with the boot or roller against the substrate to bond well. The propane flame should be moved from side to side and up the lap edge while the membrane is slowly unrolled and adhered to the underlying surface. Caution: Do not over torch the membrane as this will expose the reinforcement and cause damage to it.
Sealing
Heat both the overlaps and use round tipped trowel to seal the overlap. Adequate heat is confirmed when a uniform flow of melted bitumen compound flows evenly in a bead that oozes from the applied membrane’s edges. Excess compound should be pressed into the seam using a heated trowel. Any un-bonded areas must be lifted and re-torched.
Up stand
Flashing details are accomplished using cut pieces of Bituplus ULTRA P membrane in combination with appropriate prefabricated flashing components. The same side lap and end lap rules apply to flashing details as to field membrane. An appropriate flashing membrane (mineral surface membrane) shall be lapped with the base membrane and taken up on the parapet wall and tucked into a groove cut into the concrete. The grooves will be sealed with a suitable mastic sealant (Bitumastic)*.
