8-Chemie OTTOSEAL® S 18 Swimming pool silicone

OTTOSEAL® S 18 - The swimming pool silicone.‎ Characteristics: Neutral-curing • 1-component silicone sealant • Extremely resistant to continuously wet conditions • Contains extra fungicide • High resistance to notches, tension and tearing • Resistant to chlorine in the concentration required for swimming pool desinfection • Non-corrosive • Excellent adhesion on many substrates, partly in combination with primer • Excellent weathering, ageing and UV- resistance.‎ Fields of application: • Sealing of swimming pools and -baths as well as elastic jointing on the pool edges.‎ Standards and tests: • Suitable for applications according to IVD instruction sheet no.‎ 17 (IVD = German industry association sealants).‎ Additional useful information For underwater joints certain prerequisites must be met to ensure optimum adhesion: The joint width should preferably be 10 – 15 mm and joint depth should be limited to approximately 8 – 10 mm by backfilling material.‎ Prior to sealing, the sides of the joints must be thoroughly cleaned of loose and dusty particles, residual mortar and contamination from oily or greasy substances.‎ The sides of the joints must also be dry because a film of moisture on the surface will act like a release agent.‎ The joint edges should be masked.‎ Mineral, absorbent joint sides should be treated with OTTO Primer 1218, applied undiluted to the sides, using a paintbrush.‎ After airing the primer and injecting OTTOSEAL® S 18, the sealant must be smoothed within approx.‎ 6 minutes before a skin starts to form, using a tool moistened with OTTO smoothing agent.‎ Ideally, the pool should not be (re)filled until two weeks after the joints have been sealed with OTTOSEAL® S 18.‎ After the sealant has cured completely and the pool is filled with water for the first time it should be chlorinated immediately with a 2 mg/l intermittent chlorination during the first 2 days.‎ During this time the pH value should be adjusted to between 7.‎0 and 7.‎2 to achieve the highest possible effect of the disinfectant.‎ For operation thereafter the concentration of free chlorine should be 0.‎3 – 0.‎6 mg/ litre (warm water whirlpool 0.‎7 – 1.‎0 mg/litre) and the pH value between 6.‎5 and 7.‎6 (ideally 7.‎0 – 7.‎2).‎ The water circulation should be adjusted so that the water constantly runs over the overflow edge of the pool.‎ Alternative methods, such as UV radiation or ozonisation do not have sufficient sustained-release-effect to prevent a fungus attack.‎