BLOCKSIL

A revolutionary British-made liquid flat roof system that took years to perfect - was launched in the UK in January 2012 - and is already in use by leading rail contractors.

Blocksil is a single-part liquid silicone compound and optional non-woven needled polyester fleece reinforcement, which combine to form a seamless membrane which adheres to all irregular contours and surfaces, bridging cracks and holes up to 50mm diameter, while maintaining 5,000% flexibility.

It won’t shrink, it’s solvent-free and you could drink the rainwater from it were you so inclined!

Blocksil is so technically advanced that accelerated ageing tests have shown that it could have a lifespan of up to 100 years.

The specially formulated silicone is brushed on, or applied by roller or airless sprayer. It is straightforward and safe to apply – only basic hand and eye protection are necessary - and dries to a “rain-free” stage in 3-4 hours (fully dry in 16 hours).

Blocksil’s Chris Knowles, who has 35 years experience as a chemist in the industry, says: “This really is the ultimate coating. Unlike many other membrane coatings, Blocksil is not affected by temperatures in the range from -60C up to +200C and remains completely flexible and supple whatever the conditions.”

Blocksil is unaffected by UV, has excellent resistance to dilute acids and alkalis and is designed to be perfect for dense industrial areas where the air can be heavily contaminated. It is ten times more vapour permeable than most other high tech membranes and 100 times more than bitumen based products - yet fully water repellent.

Your can download full details below, but here’s a quick overview of Blocksil:

• Forms a tightly adherent, seamless, permanently elastic, waterproof skin which follows the most complicated and irregular surface contours.
  
  
• Working temperature range is -60 degrees C to + 200 degrees C.
  
  
• Remains constantly pliable and supple at both high and low temperatures.
  
  
• Generally unaffected by UV and excellent resistance to dilute acids and alkalis.
  
  
• Very high vapour permeability and fully water repellent.
  
  
• Non-hydroscopic and will not support fungal growth.
  
  
• Extremely high fatigue resistance.
  
  
• When tested in accordance with B.S.476:Part3:1958 - achieved the designation of EXT.F.AB.
  
  
• BS6920 Test on Effect of Water Quality - satisfactory results for all 5 separate leaching tests.
  
  
• Halogen, VOC free and environmentally friendly.
  
  
• Very strong and its strength is independent of the substrate.
  
  
• Very high stress absorbing characteristics, and excellent recovery.
  
  
• Full RAL colour range.
  
  
• Fast, safe and easy to apply.
  
  
• It is a British-made Product.
  
  

Blocksil has a wide range of industrial applications:

• Local Authorities
  
  
• Central government
  
  
• Hospitals
  
  
• Industrial buildings and plants
  
  
• Airports
  
  
• Railways and other mass transit
  
  
• Estate & Facilities Management
  
  
• Ports, docks and other freight handling
  
  
• Industrial roofing
  
  

For further information contact Chris Knowles

Blocksil Fact Sheet - January 2012

Blocksil Safety Data Sheet

Blocksil Specification & Technical Information - January 2012