Why Sika Liquid Plastics Roofing Systems?

Cold Applied Roofing Membranes

Sika Liquid Plastics liquid applied membranes are high performance polyurethane membranes which become rapidly resistant to rain damage, and can be used on both flat and pitched roofs.


Our liquid applied membranes are cold applied, eliminating the risk of fire in an occupied building during installation and cure to form a seamless waterproof membrane. The advantage of a seamless system when compared to traditional sheet membranes such as felt is that it eliminates the possibility of joint failure through poor workmanship. The system offers outstanding stability and longevity, and can be guaranteed for up to 25 years.

Waterproofing Flat Roofing

Sika Liquid Plastics manufactures a range of quality, seamless, cold applied, liquid systems and coatings for the waterproofing of flat roofs.


Sika Liquid Plastics have been manufacturing high performance protection and waterproofing systems for over 50 years. Our roof waterproofing membranes provide long lasting, elastomeric weatherproof protection as well as many advantage over alternative systems.

Our proven track record for developing innovative techniques and problem-solving systems has resulted in an extensive portfolio of products that you can trust, including Decothane our key, flagship product, and Decothane Ultra, our new low odour system designed for sensitive sites such as schools, hospitals and manufacturing plants.

Project Monitoring

From pre-start to project completion and beyond, our Applications Team is on hand to ensure your project runs smoothly.

We consider every member of our team to be a roofing expert and their aim is to offer complete support throughout the works including;

  • Attendance at pre-start meetings
  • Regular comprehensive documented inspection visits
  • A final inspection of the work to ensure that the highest level of workmanship has been reached before a guarantee is issued


Our Applications Team consists of a group of highly skilled roofing experts who all have experience of working 'on the tools'. This unique hands-on experience means they know the best way to overcome most problems faced by contractors on site.


Their roofing expertise allows us to offer an unrivalled service experience that includes technical advice, guidance, and support - whether on site or in the office.


For more details on our project monitoring service please contact our Applications Department: Telephone: 01772 255060

Building trust

As a global building product manufacturer, we’ve worked with a plethora of businesses across a wide diversity of applications to help give the ultimate protection against roof leakage.


As a British based manufacturer, quality and innovation are just two of the characteristics replicated throughout Sika Liquid Plastic – visible in our products, our people, our manufacturing processes and our research and development.


We supply a complete range roofing solutions including cold applied built up roof systems, inverted roofs, solar and green roof finishes. Each system provides a safe application and guaranteed waterproof protection.


Check out our dedicated Case Studies section to see further impermeable flat roofing examples we’ve solved.

Speak to an expert

To speak to an expert about Sika Liquid Plastics Flat Roof Waterproofing Systems, please fill in the short form below and a member of our team will be in touch as soon as possible.