SikaTop®-540 Seal

12 months from date of production if stored properly in unopened, original packaging.

Dry, cool, shaded place. Do not store in direct sunlight and avoid allowing the material to freeze which will render the material unusable. 

0.5 g/L

~ 1.0 N/mm²

Gray scale:

4-5 (1000 hours)

2-3 (2000 hours)

(Gray Scale 1 denotes severe discolouration; 5 denotes mild or no discolouration.)

< 0.1 mm

2.27 x 10^-13m/s

>5 °C

Part A : B = 5 : 13 (parts by weight)

~ 60 minutes at 20 ^oC

~ 30 minutes at 30 ^oC

The recommended coverage of SikaTop®-540 Seal is 1 kg/m² per coat to obtain an approximate wet film thickness of 0.8 mm (± 0.08mm).

Actual coverage depends upon the method of application, the texture and porosity of the surface.

Therefore material requirement is approximately 2 kg/m² for a total dry film thickness of 1 mm (± 0.1mm) in two coatings.

Note: use only complete pack.  

Correct substrate preparation is critical for optimum performance. Surfaces should be structurally sound direct tensile strength of more than 1.5 N/mm² via a pull off tester with a load rate of 100N/s), clean, and free from laitance, loose particles, oil and grease, old coatings, curing compounds or any other contaminants. Remove oil or grease and wax contaminants by scrubbing with industrial grade detergent or degreasing compounds before mechanical preparation. Cement laitance, loose particles, mold release agents, curing membranes and other contaminants must be removed from the surface by shot-blasting, grinding or scarifying followed by vacuum cleaning.

Mechanical mixing is necessary. A slow speed (300 rpm), heavy duty electric drill with a wing type paddle is recommended. Place approx. 75% of Part A of the pack in a clean pail. Keeping the mixer running, add the Part B slowly. Mix for at least 3 minutes to get a lump-free homogenous mix. While continuing to mix, add all of the remainder of Part A if applying on a horizontal surface, or a part of it if applying on vertical surfaces till the required consistency is obtained. Allow to stand for 2-3 minutes and remix before application. 

Whilst the substrate is still damp from saturation, apply the first coat. Leave to harden for approximately 4-8 hours at the temperatures above 20 ^oC before applying the second coat.
For slurry consistency, apply with a hard plastic bristled brush, broom or by trowel.
For floor applications, to avoid risk of damage to the previous coats, it is recommended to apply the next coat after 24 hours.
If the subsequent coat is applied 12 hours or later, the slightly prewetted, preferably using a fine spraying.
For more details, please refer to our Technical Service Department.

SikaTop®-540 Seal must be protected against rapid drying due to direct sun exposure, high temperatures or wind. Curing by wet burlap, polyethylene sheet or a curing compound such as Sika® Antisol® S is recommended. 

Clean tools using water and rags before the resin system hardens. Hardened material can only be removed mechanically.