weber.prim 806

Colours:

transparent

Storage:

The product can be stored at least 12 months in its original unopened packaging, if kept dry, frost free, 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 addition of silica sand and as bonding layer for such resin mortars. Furthermore as 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 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 a tensile strength (pull-off strength) of ≥ 1.5 N/mm2 in 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 re-worked or covered with tiles after a waiting time of 4 hours at +20 °C.