HR OB Impregnating Agent

If the surface has previously (within the past 8 years) been treated with a solvent-based impregnating agent, you must use HR OB Impregnating Agent, which is a solvent-based impregnating product.

Suitable for impregnating both existing and new porous surfaces, such as fired brick, sand-lime brick, concrete, MBI concrete stone, plasterwork, and aerated concrete. HR OB Impregnating Agent is a widely sold solvent-based product with a durable effect lasting up to 10 years.

Instructions for Use:

• Remove loose parts like crumbled joints and brick flakes.
• Repair joints and cracks.
• Clean the surface to be treated with a high-pressure washer.
• Allow the surface to dry sufficiently (a minimum consumption of 0.5 L/m² applies).
• Adequately cover glass, window frames, roofing, plastics, etc.
• HR OB Impregnating Agent should be applied thoroughly with a low-pressure sprayer until the liquid runs off.
• When using a low-pressure sprayer, apply from top to bottom.
• Apply the product continuously without interruptions. Smaller areas can be treated with a brush, but the same quantity must be applied.
• The treated surface must be protected from heavy rain for at least 2 hours.
• Wind and strong sunlight can cause the solvent to evaporate too quickly, limiting penetration.
• The product can be applied to slightly damp surfaces.

Consumption Requirements:

• The minimum consumption should always be 0.5 L/m².
• If this is not achieved, a second treatment is required.
• Application temperature: +5°C to +25°C.
• Below +5°C, the solvent evaporates very slowly.
• The effect, depending on weather conditions, develops after 1.5 to 2 weeks.

Consumption (Average Indications):

• Brick: 1.0 L/m²
• Porous brick: 1.5 L/m²
• Sand-lime brick: 0.8 L/m²
• Aerated concrete: 1.0 L/m²
• Natural stone: 1.0 L/m²
• MBI concrete stone: 0.6 L/m²
• Concrete: 0.5 L/m²

Product Properties:

• Vapor permeable
• Alkali resistant
• Highly water-repellent
• Colorless
• Easy to apply