Substrate preparation

The substrate must be ready for installation, dry, clean and load bearing. If installation occurs on shrinking substrates frequent expansion joints should be included in the layout.
Prime absorbent substrates in interior areas with Okamul GG or Okatmos® UG 30. Allow a drying time of at least 24 hours over calcium sulfate screed or prime with Okamul PU-V schnell. If installed on calcium sulfate screed in layer thickness of more than 5 mm (3/16") apply epoxy primer Okapox GF or apply leveling layer of Servolight and let it set. On asphalt mastic screed layer thickness is limited to 5 mm (3/16").
Clean non-absorbent substrates like Terrazzo, ceramic tiles or existing sound and load bearing PVC-coverings with Grundreiniger, grind and clean with heavy duty vaccum cleaner. Then prime with Okatmos® UG 30 or Okamul PU-V schnell.
Metal surfaces like steel, galvanized steel or aluminum in interior applications have to be form stable (no vibration or flexural stress) and rust free. Remove oil and grease with aceton and prime with Okatmos® UG 30.
Wood substrates must be dry (moisture content less than 10%) and thoroughly fixed to the substrate (minimum spacing between screws 15" (40 cm)). Minimum thickness on floors 1" (25 mm), 3/4" (19 mm) on walls. Tongue and groove have to bee glued. Allow particle board primed with Okatmos® UG 30 to dry for at least 24 hours.
In exterior areas apply a contact layer of adhesive mortar and let it set.

Processing

Mix Servolight with clean water to a smooth texture. If necessary, adjust mortar consistency by adding small quantities of water. Allow mixture to slake for approx. 5 minutes and stir again. Use appropriate notched trowel (see table) to apply mortar onto substrate, slide the covering material into the adhesive bed within 30 minutes and press tightly. Depending on the absorbency of the substrate/covering corrections can be made within 25 minutes.

Cleaning

Clean tools and tile surface immediately with water.

Note

The information is based on our experience and is to be regarded as general instructions. We cannot guarantee successful results since we do not have any influence on the conditions at the construction site and the proper processing. In any case a sample application is recommended before the installation.

Tools and coverage(DIN 18 157 part 1)

maximum tile dimensions	square notched trowel size	coverage (powder)
up to 2" (< 50 mm)	1/8" x 1/8" x 1/8" (3 mm)	(230 sq. ft. per bag (approx. 0.7 kg/m²)
2 - 4" (51 - 108 mm)	4 mm (or equivalent)	180 sq. ft. per bag (approx. 0.9 kg/m²)
4 - 8" (109 - 200 mm)	1/4" x 1/4" x 1/4" (6 mm)	124 sq. ft. per bag (approx. 1.3 kg/m²)
over 8" (> 200 mm)	min. 8 mm (or equivalent)	90 sq. ft. per bag (approx. 1.8 kg/m²)

Coverage depends on substrate condition and other factors.

Packaging

Packaging		Product Code
54 x 15 kg (33 lbs) paper bags		13096
42 x 3 kg (6.5 lbs) paper bags		13104

Revised

Wbg. 05.02.09