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Tanking Slurry Technical Data Sheet
1. DESCRIPTION
Antel Tanking Slurry is a ready mixed, plastic modified and hydraulically setting powder. When applied to concrete, cement mortar renders or masonry, a portion of the hydrophobic substances penetrate into the capillary system of the substrate. These substances fill the capillaries and stop the passage of water and become an integral part of the structure, thus forming a monolithic bond.
2. USES
Tanking Slurry can be used in a wide range of areas, for commercial and domestic properties as well as in building, construction and civil engineering projects. Tanking Slurry may be applied to the positive and negative side of a structure against pressure water, ground moisture and dampness. It can be used to waterproof both old and new structures, internally and externally. The Tanking Slurry bridges hairline cracks, resists the freeze/thaw cycle, is non toxic, non corrosive, prevents efflorescence and is resistant to chemicals.
3. PACKAGING
25kgs per bag.
4. COVERAGE
2kgs of mixed material per 1 square metre.
5. STORAGE
As with all cementitious products store in cool, dry, frost free conditions in original containers. Protect from freezing. Keep out of reach of children.
6. HEALTH & SAFETY
Tanking Slurry is non combustible. When mixing or handling the dried product wear suitable respiratory protection, gloves and eye/face masks. Do not inhale dust. Mix in a well ventilated area. Important - Please refer to Health & Safety Data Sheet for complete information.
- DRYING AND CURING
If conditions are damp with poor ventilation, full cure could take several months. If the Tanking Slurry is to be left as the finish coat it should not be decorated until complete cure and drying has occurred. Decoration should be confined to a non plastic emulsion paint.
8. SURFACE PREPARATION
The walls should be checked for nails or any other metal fixings which must be removed.
Make good any holes, cracks or poor mortar joints using Antel Waterstop or mortar with Antel Rendermix additive.
Chasing out for electrical or plumbing lines should be completed prior to treatment.
If the property is to be fully tanked, consideration should be given to the removal of windows, doors, surrounds, radiator brackets and any other fixings which may prevent a continuous seal. Any pipe intrusions should be chased out to 25mm around and 25mm deep and made good.
Where water pressure is encountered it can be relieved by inserting weep tubes in the wall. This will allow the Tanking Slurry applications to be carried out and can be subsequently sealed using a quick setting plug.
Where severe water seepage is experienced or where the angle is found to be suspect, chase out to a minimum of 25 mm from the wall and 25mm into the floor, cutting into the wall where possible.
9. MIXING/APPLICATION
Add 9-11 litres of clean water to one 25kgs bag. Always add water to the powder. Thoroughly mix for at least three minutes. The mix will remain workable for 1-2 hours depending on conditions on site.
Prior to the application of the first coat, the walls should be mist sprayed. Any surface water should be allowed to dry off. Apply fillets to floor/wall angles, vertical corners and around wall/ceiling joints of vaults if relevant. These fillets should be formed using Antel Waterstop.
1st Coat - Apply by brush one coat of Tanking Slurry to the surfaces to be treated. Allow a minimum of four hours before the next coat. Where severe damp is encountered it will be advisable to leave overnight to highlight any weak spots. These can be sealed using Antel Waterstop prior to the application of the second coat.
2nd Coat - Apply the second coat the same as the first. Allow to dry for a minimum of twenty-four hours. It will be beneficial to finish the first coat with vertical strokes and the second coat horizontally.
10. GENERAL NOTES
FLOORS
When a waterproofing contract is carried out consideration should be given to treating solid floors, particularly if there is no existing floor membrane or if its effectiveness is suspect.
By waterproofing the walls you may push the water elsewhere and it could reappear through a defective floor. If the floor is to be treated, any existing screed should be removed to allow the Tanking Slurry to be carried across the floor to form a continuous waterproof seal. This can be re-screeded or if there is sufficient headroom, Antel Self Levelling Floor Compound can be used. In all cases the Tanking Slurry must be protected from wear.
CONDENSATION
Basement areas are prone to condensation and internal waterproofing of such areas could further highlight this problem. The application of Antel Rendermix in the cement mix or renovating plaster will reduce the problem but consideration should be given to correct ventilation and heating that may be necessary. Alternatively condensation can be controlled by the use of dehumidifiers.
Fixings
Any Fixings required that will entail entry through the Tanking must be carried out as follows:
A. Drill a hole into and through the Tanking. The hole must be a minimum of twice the diameter and 13mm deeper than the proposed fixing plug.
B. Fill the hole with Antel Waterstop ensuring that no air pockets exist and that the hole is completely filled. Press the plug in and allow to cure.
C. Alternatively after filling the hole, allow to cure, and drill in the centre of the cured Waterstop, the correct size and depth for the fixing plug, and push in the plug.
D. Any timber skirtings to be fitted can be fixed using a suitable adhesive.
