• Resistant to seawater, chlorides and alkali
• Chemical Stability against common organic and inorganic acids, alkalis, salts and organic solvents
• Saving cost and time
• No protection layer required
• Fast installation
• Excellent waste management
• Anti sedimentation and anti-cracking
• Provides complete barrier to water, moisture and gas
• Cold applied, easy to install, does not require primer or fillet
• Solar reflective, being white in colour thereby reduce temperature gain
• Smooth surface membrane
• Seals adhesively to concrete
• Highly chemical resistant, effective in all types of soils and waters, protects structure from chlorides, sulphates and aggressive ground condition
• Excellent bonding with concrete applied on membrane
• Low flatness requirement to substrate; reliable overlapping; mechanical fixing, easy application
• Sound anti-puncture performance and adaptable to settlement and distortion

Installation – General Guidelines

• Tools/materials required: Heavy duty lap roller, stanley/utility knives, tape measure, cotton cleaning cloths, plywood, or similar cutting board, thin metal straight edge, chalk line, broom, 2 metre long pipe, or heavy broom handle, round nose trowel, or spatula required protection and/or drainage boards and other ancillary products.
• SUNPRUFE membranes are supplied in rolls 1.2 m wide incorporating dual adhesive layers with colored zip strips at the top and bottom of the seam area on the edge of the roll. This enables even stronger bonded laps between adjacent rolls. Both zip strips cover an aggressive adhesive. Once the zip strip on the top of the membrane and the zip strip on the bottom of the membrane are removed, a strong adhesive to adhesive bond is achieved in the overlap area.

Installation – Horizontal Surface

• Place the membrane with the zip strip facing towards the concrete pour. Kick out or roll out the membrane with HDPE film side to the substrate. End laps should be staggered to avoid a build-up of layers. Leave zip strips on the membrane until overlap procedure is completed.
• Accurately position succeeding sheets to overlap the previous sheet 3 in. (75 mm) along the marked edge. Peel back and remove both the zip strips in the overlap area to achieve an adhesive to adhesive bond at the overlap. Ensure a continuous bond is achieved without creases and roll firmly with a heavy roller.
• On completion of the installation, ensure complete removal of the plastic zip strips from all overlaps.

Installation – Vertical Surface

• Apply the membrane with the green zip strip facing towards the concrete pour. Mechanically fasten the membrane vertically using flat-headed fixings appropriate to the substrate.
• The membrane may be installed in any convenient length. Secure the top of the membrane using a batten or fixing 50 mm below the top edge. Use fixings at typically 600 mm centres to secure the membrane flat against the substrate.
• Fixings can be made through the selvedge, this allows firmly rolled overlaps, which are covered by the subsequent strip of SUNPRUFE.
• Peel back and remove both the green and blue zip strips in the overlap area to achieve an adhesive to adhesive bond at the overlap. Ensure a continuous bond is achieved without creases and roll firmly. On completion of the installation, completely remove the plastic zip strips from all overlaps.

Corners

• Internal and external corners should be membrane a minimum of 100 mm and sealing. Ensure that the apex of the corner is covered and sealed and roll firmly.

• Excellent low-temperature performance, especially suitable for cold area applications
• Good weather resistance, tensile property, high elongation, wear resistance and excellent workability
• Excellent adhesion to any vertical or horizontal surface
• Polymer rich compound. Easy and strong seal on overlaps
• High mechanical strength and fatigue resistance properties
• No curing time, instantly waterproofs the substrate
• Uniform thickness-eliminating likelihood of uneven application possible with liquid applied membrane

• The surface should 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. The substrate must be moist but without stagnant water. Sprinkle water over the substrate if too dry.
• The application temperature should be between 5 o C to 55 o C.
• Apply a primer coat of SUNBITUPRIME at the rate of 10 sqm per Kg and allow it to cure for 6-8 hours.
• On the primed surface, begin laying the membrane at the lowest point of the roof gradually moving towards the higher areas. Unroll the membrane halfway, align the side laps and fix SUNPRUFE SBS membranes by applying uniform pressure with a roller/wet cloth to ensure to remove entrapped air, if any.
• Overlap joint shall be provided of 80 -150 mm in longitudinal direction and 80-150 mm in transverse direction.
• For trafficable roof SUNPRUFE SBS waterproofing system shall be protected with PCC dosed with SUNPLEX of 50 mm thick/tiles loosely laid or fixed, over a separation layer of spot bonded geotextile of 120/150 gsm.

• Signal Layer indicates damages due to handling and installation
• Superior mechanical characteristics
• Excellent tensile and elongation properties
• Superior dimensional stability after heat treatment
• Good flexibility at low temperatures
• Excellent puncture resistance
• Fast application, loosely laid on horizontal surfaces
• Resistant to root penetration
• Easy to handle, install and repair
• Excellent impermeability to water ingress
• Efficient hot air welded seam
• Very high level of water tightness
• Long life expectancy
• Double weld of joints allows to pressure test of joints
• Resistant to bursting at high water pressure

• Remove all loose gravel, dirt, oil, grease, and other foreign particles by jet or dry air and clean the surface mechanically or by grinding to make it smooth before application.
• Surfaces should be free from cavities and projecting nibs. All surfaces shall be free from running water, surface laitance, and contamination.
• In case of rocky surface in case of tunnels or rocky substrate, shotcrete of 50 mm may be installed prior to installation of protective felt. If further irregularities are observed in the shotcrete surface, it may be treated with additional fine graded shotcrete (fine rounded aggregate, grain size 0 - 4 mm), applied in layer of 30 mm.
• Coving of 75 mm radius shall be provided at all junctions between vertical and horizontal faces.
• Lay geotextile/protective felt loosely as a base layer in case of horizontal surface of using suitable fixings specified by manufacturer over vertical or shotcrete surface with an overlap of 50-100 mm joined by point welding or similar suitable method.
• Lay SUNPRUFE PVC loosely laid on horizontal surface over geotextile/protective felt and with the help of roundels on the geotextiles/protective felt over vertical or tunnel surfaces. No perforation of the membrane shall be allowed. Ensure that the membrane is laid with signal layer towards the inside and with adequate slack to prevent over-stressing during concreting.
• Provide overlap joints of 75 mm in both longitudinal and transverse direction of the SUNPRUFE PVC and sealed properly with hot air welding only by a double weld.
• Terminate SUNPRUFE PVC at the top of parapet wall with termination strip and fix it by screw at 300 mm c/c.
• All termination strip shall be sealed with water lock sealant and topped up by suitable sealant.
• All seams should be testing using suitable method of seam testing.
• Every care should be taken to protect the membrane during and after installation. Any damages may be repaired and tested before casting final concrete lining.