BNL7 and BNL25: What’s the Difference?

If you want to protect your facades sustainably against moisture, dirt and weather conditions, BNL Producten offers several top-quality solutions to choose from. Two great examples are BNL7 (a water-based impregnating agent) and BNL25 (a cream-based variant). Both provide invisible, long-lasting protection, but they differ significantly in composition, application method, and ideal use case. Which one suits your situation best? Let’s break it down for you.

BNL7: the power of water-based protection
BNL7 is an innovative, water-based facade protector with at least 7% active substance. This liquid product is easily applied using a low-pressure sprayer. Thanks to its rapid action, the facade becomes water-repellent within just a few hours.
Advantages of BNL7:

• Fast-acting: water-repellent within hours
• Penetrates deeply into brick, concrete, natural stone, plaster and joints
• Invisible once dry – retains the original look of the facade
• Ideal for large surfaces and untreated substrates

Note: BNL7 is not suitable for surfaces previously treated with water-repellent products. For reapplications, BNL25 is the better choice.

BNL25: versatile cream with insulating properties
BNL25 is a high-quality cream product that’s applied directly to the facade using a block brush or roller, making it easy to apply yourself. Its thick consistency allows for controlled application, especially on vertical surfaces. This makes BNL25 ideal for complex structures and facades that have already been treated in the past.
Advantages of BNL25:

• Rainproof within 30 minutes
• Suitable for previously treated facades
• Provides additional thermal insulation – contributes to energy savings
• Resistant to alkalis, UV radiation, and acid rain
• Easy to apply, even in difficult corners and textured surfaces

Craftsmanship starts with the right choice
Both products are developed with the same goal: to protect facades sustainably, with minimal visual impact and maximum resistance to moisture and pollution.

If you're working on a large, untreated surface and want fast application, BNL7 is your go-to solution. If you're treating an existing facade or need precision, BNL25 is the smart choice.

Need advice for your project?
We’re happy to help. Visit www.bnlproducten.nl or contact us for tailored advice.