SikaTop® Seal-107 LK

▪ Approved for contact with potable water

▪ SPAN - MS1583:Part 1:2003

▪ SIRIM - MS 1583:Part 1:2003, SS 375 : Part 1 : 2001, BS 6920-1:2014  

▪ Singapore Green Label: 032-118-2813 "Environmentally Preferred Coating"

Part A                                             Liquid polymer and additive                            

Part B                                             Portland cement, selected aggregate

                                                        and additives                                                      

12 months from the date of production

Stored properly in original, unopened and undamaged sealed packaging in dry conditions. Protect from direct sunlight, rain, water and moisture.

~0.7 N/mm²                                                                                              (EN 1542) Tested under laboratory controlled conditions. Results may vary at site conditions

< 0.1 kg/m².h 0.5                                                                                  (EN 1062-3)

< 5 m                                                                              (EN ISO 7783-1 & 7783-2)

> 50 m                                                                                                    (EN 1062-6)

1.9–2.0 kg/l

~30 minutes (at +30 °C). Pot life will be shortened at higher temperatures.

Waiting Time

The waiting time between coats is 4–8 hours (at +30 °C).

Overcoating

For overcoating with other cementitious materials, allow the second coat to harden for at least 3 days prior to overcoating. For use in water-retaining structures or for applying renders over it or for overcoating with non-cementitious materials, please contact Sika's Technical Service Department.

▪ Waterproofing bathrooms, terraces and balconies is 1.0 kg/m² per coat

▪ Waterproofing coating more than 1 m waterhead is 1.5 kg/m² per coat

▪ As a protective coating is 2.0 kg/m² per coat

Notes:

▪ SikaTop® Seal-107 LK must be applied in minimum of 2 coats, including upturns up to 300 mm height

▪ 3 coats may be required in areas of extremely high infiltration

▪ For upturn more 300 mm height, please contact Sika's Technical Service Department.

Under normal circumstances, when the full quantities of both components are mixed together, a slurry consistency will result. The consistency of the mix can be altered by reducing the amount of part A to be used. For trowel application, use only 90 % of part A (approximately 4.5 kg). Mix in a clean container by slowly adding part B to part A and stir with a low speed mixer for about 3 minutes. Use within 30 minutes. SikaTop® Seal-107 LK must be mechanically mixed using a forced action mixer or in a clean drum using a drill and paddle (max. 500 rpm). A normal drum mixer or free-fall mixer is NOT suitable.

Whilst the substrate is still damp from saturation, apply the first coat. Leave to harden for approximately 4–8 hours at temperatures above 20 °C before applying the second coat.

As a slurry

Apply the mixed SikaTop® Seal-107 LK by hand using a hard plastic bristled brush or broom. Applied in the same direction. Apply the second coat of SikaTop® Seal-107 LK in crosswise direction to the first application as soon as first coat has hardened.

As a mortar

SikaTop® Seal-107 LK is applied by trowel (e.g. for a smooth surface finish), the product must be mixed with a 10 % reduction of part A. Apply the second coat of SikaTop® Seal-107 LK as soon as the first coat has hardened.

For pore / blowhole filling, tightly trowel into the pores / blowholes of the surface. For floor applications, to avoid risk of damage to the first coat, it is recommended that the second coat be applied before 24 hours. If the second coat is applied 12 hours or later, the first coat shall be slightly prewetted, preferably by using a fine spray. After the second coat has been applied, a better finish can be achieved by rubbing down with a soft, dry sponge. For more details, please contact Sika Technical Service Department.

Generally not required but precautions should be taken for applications done directly under sunlight and windy conditions.

CLEANING OF TOOLS

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

FURTHER INFORMATION

For more information on application, please refer to Method Statement "Application of Cementitious Waterproofing mortar/slurry to Wet Rooms".

IMPORTANT CONSIDERATIONS

SikaTop® Seal-107 LK is not a decorative treatment and may display signs of “blooming” after rain or in damp weather. This does not affect the performance of the coating, in any way. Where a decorative finish is required, overpaint SikaTop® Seal-107 LK with any approved Sika solvent based protective and decorative coatings, e.g. Sikagard®-680 MY.

▪ Avoid application under direct sun and/or strong wind. Do not add water in any circumstances. Apply only to sound, prepared substrates - surfaces should be well dampened but free of surface water and leaks.

▪ For waterproofing or damp proofing application, always use at least 2 coats to give a total thickness of between 1.0–2.0 mm. In areas of severe water penetration, three coats might be required.

▪ Protect freshly applied material against direct sunlight, strong winds, rain and dust for at least 8 hours.

▪ SikaTop® Seal-107 LK does not provide a trafficable finish. Protect with screed mixed with SikaLatex® SP (Refer to SikaLatex® SP Product Data Sheet).

▪ For waterproofing / damp-proofing works, special attention is required to avoid puncturing the waterproof coating with fixings.

▪ When used in contact with potable water structures, ensure that all associated products and construction materials also comply with the local regulations for contact with potable water.