Dr Fixit Dr. Fixit Prebond

Dr Fixit Dr. Fixit Prebond price 1 ltr, 20 litre price, colours shades, 10 4 colors
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Dr Fixit Dr. Fixit Prebond

Method of Application Dr. Fixit Prebond membranes are supplied in rolls of 2.0 m or 2.4 m wide, with a selvedge of 75 mm on one side to provide self-adhered laps for continuity between rolls. The rolls of Prebond membrane and Prebond Tape are inter-wound with a disposable plastic release liner which must be removed before placing reinforcement and concrete. 1 . SURFACE PREPARATION All Surfaces – It is essential to create a sound and solid substrate to eliminate movement during the concrete pour. Substrates must be regular and smooth with no gaps or voids greater than 12 mm. Grout around all penetrations such as utility conduits, etc. for stability. Horizontal Blinding – Monolithic concrete blinding or mud slab is preferred. The blinding must be free of loose aggregate and sharp protrusions. An angular profiled blinding is recommended rather than a sloping or rounded substrate. The surface does not need to be dry, but standing water must be removed. Vertical confined surface – Use concrete, plywood, masonry or other approved facing to provide to level and even support to the membrane. Board systems such as timber lagging must be close butted to provide support and not more than 12 mm out of alignment. 2 MEMBRANE INSTALLATION Prebond can be applied ambient at temperatures of –4ºC or above. During cold or damp conditions, the selvedge and tape adhesive can be gently warmed using a hot air gun or similar to remove moisture or condensation and improve initial adhesion. 3 HORIZONTAL SUBSTRATES Place the membrane HDPE film side to the substrate with adhesive/coated side facing up towards the concrete pour. End laps should be staggered to avoid a buildup of layers. Leave plastic release liner in position until overlap procedure is completed. Accurately position succeeding sheets to overlap the previous sheet 75 mm along the marked selvedge. Ensure the underside of the succeeding sheet is clean, dry and free from contamination before attempting to overlap. Peel back the plastic release liner from between the overlaps as the two layers are bonded together. Ensure a continuous bond is achieved without creases and roll firmly with a heavy roller. 4 VERTICAL SUBSTRATES Mechanically fasten the membrane vertically using fixings (i.e. fasteners) appropriate to the substrate with the adhesive/coated side facing towards the concrete pour. The membrane may be installed in any convenient length. Secure the top of the membrane using a batten such as a termination bar or fixing 50 mm below the top edge. Fixings can be made through the selvedge so that the membrane lays flat and allows firmly rolled overlaps. Any additional fixings must be covered with a patch of Prebond Tape. Ensure the underside of the succeeding sheet is clean, dry and free from contamination before attempting to overlap. Roll firmly to ensure a watertight seal. Roll Ends and Cut Edges – Overlap all roll ends and cut edges by a minimum 75 mm and ensure the area is clean and free from contamination, wiping with a damp cloth if necessary. Allow to dry and apply Prebond Tape centered over the lap and roll firmly. 5 CORNERS Internal and external corners should be formed as shown in the diagrams returning the membrane a minimum of 100 mm and sealing with Prebond Tape. Ensure that the apex of the corner is covered and sealed with tape and roll firmly.

Features & Benefits

Corrosion resistant - Makes concrete more cohesive, hence protects steel better against corrosion.

Compatibility – Being a liquid, easily dispersible & compatible with concrete/mortar mixes.

Permeability – It reduces the permeability of water into concrete.

Strength – The setting time and compressive strength of the concrete remains within the specification limits.

Shrinkage – Reduces shrinkage crack development in plaster & concrete.

Workability – Improves workability of freshly mixed cement concrete.

Durability – Increases durability by improving waterproofing of concrete.

Product Process

Step 1

Surface Preparation Remove dust, laitance etc. by wire brush and broom. Clean the surface with water and make Surface Saturated Dry (SSD) condition. Check the surface moisture content and temperature before application of the coating.

Step 2

Dressing at Junctions Apply the first coat of Dr. Fixit material on the angle fillet. Place and soak 150 mm width of 45-micron open woven glass fiber mesh as reinforcement on the wet first coat to arrest cracking.

Step 3

Coating Application Apply

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Trained & Certified Applicators

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