weber.prim 806

Colours:
transparent

Storage:
The product can be stored for at least 12 months in its original unopened packaging, if kept dry, frost free, and protected from moisture and direct sunlight, at a temperature above +10 °C.

Fields of application

weber.prim 806 is used for closing cracks in screed and concrete. For the production of quick-setting reaction resin mortars as binder with the addition of silica sand and as a bonding layer for such resin mortars. Furthermore, as a primer under the polyurethane balcony coatings, weber.tec 790 and weber.tec 791. For indoors and outdoors.

Main features

• multi-use epoxy resin
• excellent adhesion to concrete and screeds
• resistant to water, mineral oil, petrol, numerous alkalis and acids
• high compressive, flexural and tensile strengths

General notes

• All properties are based on a temperature of +23 °C without draughts and a relative humidity rate of 50%.
• Higher temperatures accelerate, lower temperatures delay the reaction process.
• Protect the freshly applied primer from dirt and moisture.
• A second coat is required for highly absorbent substrates or for exterior surfaces, e.g. as a primer for balcony coatings.
• If any silica sand is used on top of the primer, excess silica sand must be vacuumed after curing prior to any further application.
• Clean mixing equipment and tools with the thinner weber.sys 992 each time work is interrupted (fresh product). Hardened material must be removed mechanically.

Special notes

• The air and substrate temperature must be at least +8 °C.
• Reactive resins require a compressive strength of at least 30 N/mm2 and tensile strength (pull-off strength) of ≥ 1.5 N/mm2 in the case of concrete substrates.
• The residual moisture content of concrete must be < 4% by weight; the moisture check must be measured with a carbide hygrometer as a rule.
• The substrate temperature must be at least 3 °C above the prevailing dew point temperature.
• In case of residual moisture inside the substrate do not allow fresh, not yet cured coatings to be exposed to sunlight, as otherwise, bubbles may form due to water vapour pressure.
• If in contact with water at an early stage (before final curing) a grey haze may form. After curing, it can only be removed with diluted hydrochloric acid to a limited extent.
• When used as a binder for reaction resin mortar, the mortar can be reworked or covered with tiles after a waiting time of 4 hours at +20 °C.