Sikalastic®-833 R

• CE Marking and Declaration of Performance to European Technical Assessment ETA 19/0636, based on ETAG 005 Part 1 and Part 6 — Liquid applied roof waterproofing kits. Part 1: General. Part 6: Specific stipulations for Kits based on Polyurethane
• European Technical Assessment 19/ 0636 25/ 10/ 2019

Pure polyurea

12 months from date of production

Product must be stored in original, unopened and undamaged packaging in dry conditions at temperatures between +5 °C and +30 °C. Always refer to packaging.

Values at +20 °C

~100 % by weight

~100 % by volume

System

• Sikalastic®-833 R
• Sikalastic®-701
• Primers:

Other substrates must be tested for their compatibility. If in doubt, apply a test area first.
* Do not broadcast in excess.

Consumption

These figures are theoretical and do not include for any additional material required due to surface porosity, surface profile, variations in level
and wastage.
The consumption of the waterproofing layer can be increased according to the system expected service life requirements.

* Depending on the use, without top coat ~2,4 kg/m², with top coat ~2,0 kg/m²

**If exposed to UV, the use of the topcoat will extend the lifetime of the membrane.

Optional top coats: Sikalastic®-622 UV/-622 E UV. Refer to the individual Product Data Sheets.

Resistant to many chemicals. Contact Sika Technical Services for additional information.

Limited resistance to UV-induced degradation

~2,4 mm without top coat

~2,0 mm with top coat

Part A : Part B = 1 : 1 (by volume)

Part A : Part B = 1 : 1,03 (by weight)

Air Pressure of the spraying equipment must be ~170 bar.

Spray equipment fine temperature adjustments could be helpful to obtain equal output pressures of the 2 parts.
Higher temperatures provide lower viscosity & lower pressure.

+5 °C min. / +40 °C max.

≤85 % max

+5 °C min. / +50 °C max.

Beware of condensation.
The substrate and uncured applied membrane must be at least +3 °C above dew point.

≤4 % parts by weight.

The following test methods can be used: Sika®-Tramex meter, CM-measurement or Oven-dry-method. No rising moisture according to ASTM (Polyethylene-sheet).

Before applying Sikalastic®-833 R on Sikalastic®-833 R allow:

If the maximum waiting time / overcoating time is exceeded, Sika® Concrete Primer must be applied at consumption rate of 100 g/m² as an adhesion promoter between the layers. As an alternative, the membrane surface will need to provide a mechanical bond. This can be achieved by lightly abrading with mechanical abrasive equipment to remove all the surface sheen. Select the abrasive grit size and intensity of abrading depending on the condition of the membrane. Then completely remove all the dust by industrial vacuuming equipment. The final prepared surface must not have any sheen residue present.

Before applying Sikalastic®-701 on Sikalastic®-833 R allow:

If the maximum waiting time / overcoating time is exceeded, provide a mechanical bond as detailed above for Sikalastic®-833 R on Sikalastic®-833 R.

Times are approximate and will be affected by changing ambient conditions particularly temperature and relative humidity.

~10 minutes

Gel time mixture A+B (20 g)

• 8–9 s at 25 °C
• 4–6 s at 60 °C

Rain Resistant: ~10 minutes

Time is approximate and will be affected by changing ambient conditions particularly temperature and relative humidity.

Mixing and spraying

• Drum stirrer
• Air driven or electrical 2-Component heated spray equipment

Contact Sika Technical Services for local equipment suppliers.

Refer to the Sika Method Statement: Sikalastic®-833 R

Suitable substrates

Concrete, bituminous felts and coatings, metal, brick masonry, asbestos cement, ceramic tiles.

General

All contamination such as dust, loose and friable material that could affect final finish or reduce adhesion, must be completely removed from all surfaces before application of the product or subsequent products, preferably by industrial vacuuming equipment.

Refer to the Sika Method Statement: Sikalastic®-833 R

Strictly follow installation procedures as defined in method statements, application manuals and working instructions which must always be adjusted to the actual site conditions.

Refer to the Sika Method Statement: Sikalastic®-833 R.

Clean all tools and application equipment with Thinner C immediately after use. Hardened material can only be removed mechanically.