Sika® RainTite I

Acrylic copolymer and special additives

18 months from date of production

The product must be stored properly in undamaged and unopened original sealed packaging, in dry conditions at temperatures between +5 °C and +35 °C. Protect from frost and direct sunlight.

~1.03 kg/L at +27 °C

~28 %

~0.5 N/mm² (as bonding slurry)

+10 °C min. / +40 °C max.

+10 °C min. / +40 °C max.

NOTE: Use the mix in ~20 to 30 minutes at +30 °C when used as coating, mortar or bonding agent

NOTE:

The above stated consumption depends on substrate condition, porosity, level, application skills and mixing ratios. The ratios and consumptions mentioned above are based on trials done with Ordinary Portland Cement (OPC). In case of Portland Pozzolana Cement (PPC) or similar blended cements, the mixing ratios and consumptions may have to be modified slightly at site. In such cases it is advised to design a guide mix at job site and conduct field trials to ascertain the correct consistency required for the desired application. Small quantity of water may be added in case mix is not workable at higher temperatures.

Mixing

• Electric drill paddle mixer (> 700 W, 300 to 500 rpm)

  
Application

• Hard bristled brush

1. Mix Sika® RainTite I with the correct amount of water to produce a gauging solution.
2. Pour part of the gauging solution into a suitable mixing container.
3. While stirring slowly, add the cement or cement-sand mix to the gauging solution and mix thoroughly until a smooth, uniform and lump-free mix is achieved.
4. Within the mixing time add additional gauging solution to adjust to the desired consistency. Mix either by hand or with a low speed drill for not more than 2 minutes.

Waterproofing coating

1. Thoroughly pre-wet the prepared substrate (2 hours recommended) before application. Keep the surface wet and do not allow to dry. Before application remove excess water, e.g. with a clean sponge. The surface must appear a dark matt appearance without shining and surface pores and cavities must not contain water.
2. Prepare the waterproofing coating as indicated in the consumption table. Apply the first coat of Sika® RainTite I coating with a hard bristled brush applied in the same direction and leave to harden for 2 to 6 hours.
3. (Optional) Wherever coating is to be reinforced with glass fabric, lay Sika® Fabric-50 into the freshly applied base coat and embed firmly into the wet coat with brush.
4. Apply the second coat of Sika® RainTite I coating in crosswise direction to the first application as soon as first coat has hardened. NOTE: If the second coat is applied 12 hours or later to first coat, the first coat shall be slightly pre-wetted by using a fine spray.
5. Protect with screed on top for longer life.

IMPORTANT

Slight fabric marks may be visible after application of the second coat, but it will have no adverse bearing on the performance of the waterproofing system. Apply third coat wherever necessary.

Protection

1. The top layer while wet, sprinkle clean quartz sand. 
2. Once top layer has sufficiently cured, apply protection plaster, mortar, screed or any other adhesive layer. A bonding agent may be necessary.
3. Alternatively, a separation layer like PE sheet or geotextile can be used before any screed or interlocking paver blocks.

Waterproof brush topping

1. Thoroughly pre-wet the prepared substrate (2 hours recommended) before application. Keep the surface wet and do not allow to dry. Before application remove excess water, e.g. with a clean sponge. The surface must appear a dark matt appearance without shining and surface pores and cavities must not contain water.
2. Prepare the waterproof brush topping as indicated in the consumption table. Apply the Sika® RainTite I brush topping with a hard bristled brush.
3. Protect with screed on top for longer life.

Polymer modified cement mortar

1. Thoroughly pre-wet the prepared substrate (2 hours recommended) before application. Keep the surface wet and do not allow to dry. Before application remove excess water, e.g. with a clean sponge. The surface must appear a dark matt appearance without shining and surface pores and cavities must not contain water.
2. Prepare the polymer modified cement mortar as indicated in the consumption table.
3. Apply the bonding slurry as indicated in the consumption table. Using a hard bristled brush work the mix vigorously onto the substrate, forming a thin layer filling all unevenness, pits and pores.
4. When the bond slurry is still fresh and sticky, apply the polymer modified cement mortar.

Bonding slurry

IMPORTANT

Never use pure Sika® RainTite I or Sika® RainTite I-water mix directly onto the substrate as bonding agent, always add cement and sand to the mix.

1. Thoroughly pre-wet the prepared substrate (2 hours recommended) before application. Keep the surface wet and do not allow to dry. Before application remove excess water, e.g. with a clean sponge. The surface must appear a dark matt appearance without shining and surface pores and cavities must not contain water.
2. Prepare the bonding coat as indicated in the consumption table. Using a hard bristled brush, work the mix vigorously onto the substrate, forming a thin layer filling all unevenness, pits and pores.
3. When the bond coat is still fresh and sticky, apply the mortar or concrete. Vibrate carefully to achieve satisfactory interpenetration of mortar and concrete.

CURING TREATMENT

• Avoid rapid evaporation of the water from mortars prepared with Sika® RainTite I. Cover the surface with a polyethylene film, use wet burlap, gunny bag or hessian cloth or water misting or apply Sika Antisol® curing compound.
• Cure for minimum 3–5 days. DO NOT pond with water before 5 days of curing.
• During adverse weather conditions (high temperatures, low relative humidity, wind, sun etc.) take particular care with curing treatment.

Additive to cement paint

IMPORTANT

When Sika® RainTite I is used as an additive to cement based paints it is recommended that the same should be done for preferably light shades only. However, pre-test for consistency of colour shade is recommended through site trials before application.

1. Apply 1-2 coats with a brush on a dry surface.

Clean all tools and application equipment with clean water immediately after use. Hardened or cured material can only be removed mechanically