Flat roof waterproofing membranes are essential in ensuring the longevity and durability of buildings. Among the various materials used for this purpose, PMMA (Polymethyl Methacrylate) resin is continues to grow as a resin of choice for many specifiers. This blog explores the reasons behind the rise of PMMA resin in flat roof waterproofing membranes and its impact on the industry.
What is PMMA resin?
PMMA, or Polymethyl Methacrylate, is a type of acrylic resin known for its durability, flexibility, and excellent waterproofing properties. Its hydrolysis resistant meaning it will not break down in water and is widely used in various applications, from baths to windshields, including as a component in liquid roofing systems.
Benefits of PMMA resin in flat roof waterproofing membranes
1. Durability: PMMA resin is highly resistant to weathering, UV radiation, and chemical exposure. This makes it an ideal choice for flat roof waterproofing membranes, which are constantly exposed to harsh environmental conditions.
2. Flexibility: One of the key advantages of PMMA resin is its ability to remain flexible even in extreme temperatures. Used as part of a reinforced system, this flexibility ensures that the membrane can accommodate the natural movements of the building without cracking or breaking. For some specialist applications, such as concrete reservoir roofs, certified dynamic crack bridging offers peace of mind too.
3. Rapid curing: PMMA resin-based liquid roofing systems cure quickly, allowing for faster installation times. This is particularly beneficial in the UK, where unpredictable weather can often delay construction projects. Some PMMA resins are rainproof in 30 minutes and fully cured in as little as 60 minutes, even in cold temperatures.
4. Seamless application: Liquid roof systems using PMMA resin create a seamless, homogenous membrane. Fully bonded to the substrate, this eliminates the risk of water ingress at joints or seams, providing superior waterproofing protection.
5. Long-term performance: PMMA resin membranes offer excellent long-term performance. Look for BBA certification with durability statements that offer a service life in excess of 25 years. Alternatively ETAG 005, now known as EAD 030350-00-0402, certification to class W3 offers 25 year durability.
Why PMMA liquid roofing systems are gaining popularity
The construction industry is always looking for innovative materials that offer better performance and efficiency. PMMA resin has emerged as a leading choice for flat roof waterproofing membranes due to its numerous advantages.
1. Innovative technology: Advances in polymer technology have made PMMA resin easy to work with. Cold liquid applied, they require no hot works or specialist equipment to install. Self-terminating, liquid waterproofing membranes effortlessly accommodate awkward forms and details. With some PMMA based liquid roofing systems offering hydrolysis resistance properties, ponding water poses no threat to their durability. This has made it a preferred option for many flat roofing refurbishment projects.
2. Environmental considerations: As the demand for sustainable building materials grows, PMMA cold liquid applied waterproofing membranes are growing in popularity. PMMA forms outstanding bonds, adhering to many different substrates. This means with the right expertise and testing, it can be used to overlay in situ waterproofing membranes, negating strip up and reducing waste. Thermal improvements can also be incorporated too.
3. Versatility: PMMA resin can be used in various liquid roofing systems, making it a versatile option for different types of flat roof waterproofing. Whether it's an inverted roof or terrace, has different overburdens, or waterproofing membrane for a green or blue roof build up, PMMA Liquid roof systems provides reliable waterproofing.
4. Improved aesthetics: PMMA resin-based membranes can be tinted or coloured, allowing for customisation to match the building's design, or provide clear demarcation for walkways. This aesthetic flexibility adds to its appeal, and with quartz or anti-skid granules easily incorporated into the liquid roofing system, safer maintenance access can be easily achieved.
Conclusion
The rise of PMMA resin in flat roof waterproofing membranes marks a significant advancement in the construction industry. Its properties, coupled with its programme benefits and versatility, make it an ideal choice for modern flat roofing solutions. As more professionals and property owners recognise the advantages of PMMA resin, its adoption is likely to continue growing, setting new standards for flat roof waterproofing.
Investing in PMMA resin-based liquid roofing systems can ensure long-lasting protection and peace of mind for your building. Whether you are planning a new construction or refurbishing an existing roof, consider the benefits of PMMA resin for a reliable and sustainable waterproofing solution.