Webersil P
Webersil P
Webersil P is a high-performance silicone resin paint designed for masonry substrates. It offers a unique combination of high water repellency, high vapor permeability, and low VOC content. The paint is resistant to blistering, peeling, algae, and fungi growth, and provides a hydrophobic water-beading effect to maintain a clean surface. It chemically bonds to masonry substrates due to its nanoscale molecular structure and is UV stable and resistant to acid rain, ensuring long-term durability.
Applications
Webersil P is suitable for new build masonry substrates, external wall insulation systems, and rejuvenating existing rendered substrates. It forms part of several approved insulation systems.
Technical Specifications
The paint is solvent-free, water-based, and available in a wide range of colors. It is packaged in 12.5 kg plastic buckets and has a shelf life of 12 months when stored correctly. The nominal coverage is 0.3 – 0.6 kg/m² for two coats.
Application Guidelines
For new substrates, ensure the render is fully cured, clean, dry, and free from dust. For existing substrates, remove loose render and treat surfaces with a biocidal wash. Apply a first coat of webersil P diluted with water, followed by a second undiluted coat. Avoid application in extreme temperatures or direct sunlight.
Health and Safety
The product is essentially non-hazardous, but protective clothing is recommended during application. Clean tools with water immediately after use.
Storage and Handling
Store wet pre-mixed materials frost-free and away from direct sunlight. Buckets should be stacked no more than two high to prevent air ingress.
Customer Support
Weber provides on-site advice, detailed specifications, and demonstrations upon request. For technical support or sales inquiries, contact Weber's Customer Services Department.
Catalog excerpts
CI/SfB | (41) | Vv6 | Uniclass L517 June 2020 A high performance silicone resin paint webersil P render solutions Uses • A high quality silicone resin paint for new build masonry substrates • A low-maintenance finish on to external wall insulation • Rejuvenates existing rendered substrates About this product webersil P is a solvent-free, water-based silcone resin emulsion paint (SREP) for masonry substrates. Technical data External Wall Insulation systems - webertherm XM Insulation Board Reinforcement Fixing 1st Coat 2nd Coat Finish Specified insulation weber standard Mechanical or weberend LAC Optional weber PR310 board12 meshcloth mechanical and orweberend weberend PTC primer (if weberend LAC rapid p webersil P Render-only systems Preparation Reinforcement Fixing 1st Coat 2nd Coat Finish option option ▲ Unique combination of high water repellency, high vapour permeability and low VOC ▲ Resistant to blistering and peeling ▲ Highly hydrophobic - water beading effect (see image insert) helps maintain a clean surface ▲ Chemically bonds to masonry substrates due to nanoscale molecular structure ▲ Resistant to algae and fungi growth ▲ Vapour permeability and UV resistance independently tested ▲ UV stable and resistant to acid rain ensures exceptional long-term durability and performance ▲ Forms part of a number of approved insulation systems weberend aid N/A N/A weberend OCR N/A weber PR310 Contact the Weber Specification team to request a specification. For use over 11m or for multi-occupancy buildings Weber will only specify MFD insulation.
Open the catalog to page 1
render solutions webersil PPreparation Existing rendered substrates Hammer test and remove all areas of loose, 'bossed' render. Treat surfaces with weber CL150, a biocidal wash. Refer to data sheet for full instructions. Wire brush, or wash down surface with a high pressure jet (40 - 80 bar) to remove all traces of growth. Make good surfaces using weberend aid and weberend TUC or weberend PUC. New rendered substrates Ensure new render is fully cured, clean, dry and free from dust. Note: To ensure colour consistency, paint required for complete and adjoining panels should be of the same batch...
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