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- Long-lasting masonry protection against damp, available in clear and white.
- Suitable for use on brick, stone, concrete, and renders.
- Utilises advanced nano-technology for deep penetration and up to 25 years of protection.
- UV resistant, ensuring durability and sustained performance.
- Easy application with brush, roller, or airless spray.
- Developed for professional use, ensuring top-grade performance.
Wethertex WeatherBlocker
The ultimate solution for protecting your building from the damaging effects of penetrating damp. Using cutting-edge nano-technology, this waterproof coating penetrates deeply into brick and stone surfaces, providing up to 25 years of protection without altering the appearance of the substrate. Whether applied by brush, roller, or airless spray, WeatherBlocker offers superior UV resistance, ensuring that its protective qualities are maintained over time.
Application and Usage
WeatherBlocker is suitable for use on a variety of mineral substrates, including brick, stone, concrete, and renders. The product is ready to use and requires no mixing, simplifying the application process. For optimal results, ensure that surfaces are clean, dry, and free from contaminants. Application can be done using a brush, roller, or airless spray, depending on the area and preference. After application, it takes up to 7 days for the full protective effects to become visible.
- Ensure surfaces are clean and dry before application.
- Apply using a brush, roller, or airless spray for even coverage.
- Protect areas from heavy rain, direct sunlight, and wind during the first 24 hours.
- Do not apply if frost is forecast or if humidity exceeds 85%.
- Suitable for application in temperatures between 10°C and 25°C.
Why Choose Wethertex WeatherBlocker
WeatherBlocker stands out in the market due to its advanced nano-technology and ease of application. By deeply penetrating the substrate, it provides long-lasting protection that other products cannot match. Additionally, its UV resistance ensures that the protective qualities are maintained for years, making it a cost-effective solution for building maintenance.
Moreover, WeatherBlocker is developed for professional use, guaranteeing top-grade performance and reliability. This makes it an ideal choice for both residential and commercial projects, ensuring buildings remain dry and protected from damp-related issues.
Recommendations and Restrictions
While WeatherBlocker is highly effective, it is essential to follow the recommended usage guidelines to ensure optimal results. Do not apply in direct sunlight, high humidity, or temperatures outside the specified range. Protect newly treated surfaces from adverse weather conditions during the initial curing period.
Refer to the downloadable data sheet for detailed information and ensure adherence to safety and application instructions to achieve the best results. For additional protection against organic growth, consider using Wethertex C10 Fungicidal Wash before applying WeatherBlocker.
Health and Safety
WeatherBlocker contains a biocide to protect the cured product. It may produce an allergic reaction. For more safety information, including first aid measures and handling instructions, please refer to the Safety Data Sheet available on our website. This product is not classified as hazardous for transport and does not contain Diisocyanates.
Data sheet
- Manufacturer
- Wethertex
- Interior / Exterior Use
- Exterior Use
- Application Method
- Brush
Roller
Spray - Single, Two or Three Pack
- Single
- Pack Size
- 5L
- Touch Dry (at 20°C)
- 1 Hour
- Dry to Recoat (at 20°C)
- 2-4 Hours
- Fully Cured (at 20°C)
- 7-10 Days
- Coverage
- 5-10m² per litre
- Min. Application Temperature
- 10°C
- Colour(s)
- Clear
- Base Type
- Water-Based
- Suitable For Use On
- Concrete
- Suitable For Use On
- Brick
- Suitable For Use On
- Stone
- Suitable For Use On
- Render
- Application Method
- Brush
- Application Method
- Roller
- Application Method
- Spray
- Manufacturer
- Wethertex
- Usages
- UV Resistant
- Usages
- Waterproof Finish
- Product Usage Type
- Sealer
- Fastest Delivery
- Next Working Day
- Colour Family
- Clear
- Categorised As
- Masonry Impregnation & Waterproofers
Questions
Question about the product
![]() | Question:
Does this product work on rendedred and painted walls? |
Answer from Rawlins’ Technical Team:
This product is suitable for application to bare exterior masonry substrates, so any areas of bare render it could be applied, but not any existing painted areas. | |
IMPORTANT SHIPPING & DELIVERY INFORMATION
Wethertex WB1 WeatherBLOCKER is only available with the shipping and delivery timescales listed below - please do not contact our Customer Support Team with enquiries about alternative or earlier shipping and delivery times.
Saturdays and Sundays, as well as Bank Holidays, are not classed as working days.
Orders placed after the cut-off for this product will not be processed for earliest dispatch until 9am the next working day.
All delivery costs below are excluding VAT

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