Liquid roofing is a concept that has been around for more than a hundred years, developing greatly over time. In the early twentieth century, the manufacture of liquid roof coatings was based on liquefied rubber, by the late 1980s, single component moisture-cured polyurethane coatings were developed, becoming the main basis of today’s liquid roofing technologies.

One of the most common uses of liquid applied roofing is overlays to existing waterproofing systems that are at the end of their lifespan, leaking or have failed seams. Here are some of the other great benefits to liquid roofing overlays:


  •  Forms a permanently elastic, seamless, long-lasting membrane, delivering up to 25 years performance
  •  Provides brilliant waterproofing coverage over any awkward roof details such as piping or gutters
  •  Easy application by roller, brush or spray that can be done at temperatures as low as 0°C
  •  Quick curing, weatherproof in 30 minutes and can receive foot traffic in approx. 4 hours
  •  Excellent adhesion to most roof substrates, new or old
  •  Creates a robust and flexible waterproofing membrane, perfect for Green Roofing
  •  Extremely versatile, can be used for flat roofs of all shapes and sizes
  •  Can be applied to damp substrates or roofs that have experienced historic water ingress
  •  Elimination of hot works substantially reduces the contactor’s insurance costs and the risk of fire
  •  Cost-effective, estimated to be 70% less expensive than overall roof replacement when refurbishing

With these many benefits in mind, it is clear to see why liquid roofing and overlays are fast becoming one of the most popular and cost-effective roofing solutions, especially in the social housing market. Liquid roofing and overlays can be applied to commercial and residential roofs either flat, pitched or domed. Get in touch with the team at MJO Roofing today on 020 8953 2306  to see how we can help you plan your liquid roofing project.