SikaTite® Undertile Rapid

12 months from date of manufacture if unopened.

Store in dry cool conditions, off ground out of direct sunlight. Do not allow to freeze.

69%

0.19%

SikaTite® Undertile Rapid shall be applied in a minimum of 2 coat to both wall and floor substrates.

Application coverage rate: 0.75 Litres per m² per coat.

Allow 2 hours drying between coats at 23°C and 50% relative humidity.

Hot or warm temperature will reduce drying times.

Cold and high humidity will extend drying times

Membrane is dry once it changes from Pink to Dark Red colour.

Drying times are determined at 23°C and 50% Relative humidity. Allow longer in cold or high humidity climates.

• Personal protective equipment
• Brush and or short nap roller

Concrete:

• All new concrete slabs must have a wood float finish and be allowed to cure for at least 6 weeks • Old concrete must be cleaned with a strong commercial grade detergent or degreaser. Residue must then be thoroughly washed off with clean water. Allow the surface to dry for at least 24 hours • If the concrete (new or old) has a steel trowel or power float finish, it must be mechanically abraded to expose the aggregate. Laitance must be removed prior to application.

Renders & Screeds

• New rendered or screeds surfaces must have a wood float finish and be allowed to cure for at least 7 days

Light Weight Block / Hebel, and cement coated polystyrene boards

• Prime the surface with 2 coats of Davco Ultraprime or Davco PrimeX

Metal drain connections and PVC puddle flanges

• Shall be lightly abraded and then cleaned
• Apply a coat of Sika® Prep n Prime and allow to dry

Construction Sheeting & Boards

• Standard wall / floor building boards must be primed with the porous primer and firmly fixed in accordance with manufacturer’s instructions and appropriate Australian Standards. Such boards include plasterboard, fibre cement sheeting, marine grade ply and wet area composition board. Check with manufacturer of other building boards for their suitability.
• Screw or nail heads must be sealed with a Sika® Neutral cure sealant.
• All sheeting joints, seams, penetrations and wall/floor junctions shall have a Sika® Neutral cure sealant applied.

• All surfaces to be waterproofed must be firm, clean, dry, structurally sound and smooth. All grease, oil, wax, curing compounds, dust, loose material, laitance and other contaminants must be removed. All projections and rough spots should be dressed off to achieve a flat surface. The substrate surface must be continuous and not pond water with adequate falls to waste as required.

Substrate Priming: 

Static crack and sheet joint treatment:

For static cracks 0.5–3 mm wide rout out and clean thoroughly before filling with Sika® Neutral Cure Silicone to form a bond breaker. For all sheet joints and seams clean thoroughly and fill with Sika® Neutral Cure Silicone to form a bond breaker, apply a liberal coat of SikaTite® Undertile Rapid extending 100 mm either side of the crack/joint and place bandage into the wet membrane, press down firmly to ensure good contact, apply another liberal coat of SikaTite® Undertile Rapid to the entire surface to embed the bandage.

For dynamic cracks, expansion joints and control joints contact Sika® technical service for advice.

Bond Breaker:

SikaTite® Undertile Rapid has high extensibility and is designed for use with a 12 mm bond breaker, a bead of Sika® Neutral cure silicone.
Cure Silicone must be tooled off to form a 12 mm wide bond breaker. A bond breaker must be installed at areas subject to movement,
wall/wall junction, wall/floor junction, sheet joints and seams, penetrations and where there is a change in the direction or substrate type.

Clean tools and equipment with clean water while the material is still wet. Cured coating can only be removed mechanically.