When selecting a waterproofing solution for flat roofs and other surfaces, it’s crucial to choose a system that combines durability, flexibility, and cost-effectiveness. The Lava 20 Waterproofing System has emerged as a preferred choice for builders and flat roofers alike, thanks to its outstanding performance and versatility. Whether you’re working on new constructions or refurbishing existing structures, Lava 20 offers a comprehensive waterproofing solution that adapts to a variety of surfaces, ensuring long-term protection against the elements.
Lava 20 is not just another waterproofing product; it is a liquid waterproofing system specifically engineered to provide superior durability and flexibility. One of the standout features of Lava 20 is its ability to expand and contract with the surfaces it is applied to, a critical property for surfaces that are subject to temperature fluctuations. This flexibility significantly reduces the risk of cracks and leaks, which are common issues with less adaptable waterproofing systems. By maintaining its integrity through various weather conditions, Lava 20 ensures that surfaces remain protected year after year.
The durability of Lava 20 is further enhanced by its resistance to impact and ultraviolet (UV) rays. Surfaces coated with Lava 20 can withstand the harsh effects of the sun, as well as the physical wear and tear that comes from heavy foot traffic, making it ideal for high-traffic areas like balconies and car parks. Moreover, Lava 20 is designed to handle ponding water, a common challenge for flat roofs, without compromising its waterproofing capabilities. This resilience is backed by a 25-year waterproofing guarantee, giving users peace of mind that their investment is protected for the long term.
One of the most appealing aspects of Lava 20 is its fast application process. Traditional waterproofing methods can be time-consuming and labour-intensive, often requiring multiple coats and extended curing times. Lava 20, on the other hand, can be applied quickly, with most jobs being completed in just one day. This efficiency not only saves time but also reduces labour costs, making Lava 20 a cost-effective solution. In fact, it can cut down the costs of traditional waterproofing applications by up to 80%, making it an economical choice for both large and small projects.
Lava 20’s versatility extends to its product range, which is designed to cater to a variety of project requirements. The main Lava 20 coating is available in several sizes, including 1kg, 6kg, 15kg, and 25kg cans, allowing users to purchase the exact amount needed for their specific project. This flexibility in sizing is particularly useful for contractors who need to manage costs and minimise waste.
For areas that require extra reinforcement, such as outlets and corners, Lava Detail 20 is an excellent option. This fibre-reinforced liquid is specifically designed for detailed work, providing additional strength and durability in areas that are more susceptible to movement and thermal shock. Lava Detail 20 comes in a 6kg can, making it convenient for use in smaller, more intricate areas where precision is key.
In addition to its primary waterproofing capabilities, Lava 20 also offers a range of top coats that allow for customisation of the final finish. These top coats include a clear, totally transparent option, as well as a variety of coloured finishes, such as anthracite dark grey. For projects that require a specific aesthetic, custom colours can also be created, providing an added level of design flexibility. This ability to tailor the finish to the specific needs of a project makes Lava 20 not only functional but also visually adaptable, allowing it to blend seamlessly with different architectural styles.
The application process for Lava 20 is straightforward yet versatile, accommodating a wide range of surfaces including timber, OSB, plywood, felt, asphalt, single-ply insulation, concrete, metal, asbestos, and cement board. Regardless of the substrate, the key to a successful application lies in proper surface preparation and the correct use of primers and reinforcing materials.
When applying Lava 20 over new timber decks, such as OSB or marine-grade plywood, the first step is to ensure the surface is clean, dry, and free of any contaminants. This step is crucial as any dust or debris left on the surface can interfere with the adhesion of the waterproofing material. Once the surface is prepared, any joints, holes, or gaps should be filled with Lava Polyurethane Mastic. This mastic not only seals these areas but also smooths out any irregularities in the surface, creating a clean, even base for the application of Lava 20.
Priming is the next essential step in the process. Applying a light coat of quick primer over the entire surface helps to ensure that the Lava 20 adheres properly and cures evenly. Recommended application is 150g per square meter (750g primer gives 5m2 and 4kg primer gives 26m2 coverage). The quick primer typically takes about 10 to 15 minutes to cure, allowing for a fast turnaround to the next step.
For surfaces with joints or transitions, reinforcing these areas with Lava Polyester Reinforcing Tape is recommended. This process involves applying Lava 20 in a wet-on-wet technique, where the liquid rubber is applied first, followed by embedding the reinforcing tape, and then covering it with another layer of Lava 20. This method creates a robust, flexible coating that strengthens these vulnerable areas, ensuring that the waterproofing system remains intact even in the face of surface movement or thermal expansion.
The main coating of Lava 20 can be applied using a brush, roller, or squeegee, with a recommended application rate of 2.5 to 3 kg per square metre. This coating can be applied in a single thick layer or in two thinner layers, depending on the specific requirements of the project. For those looking to speed up the curing process, a catalyst can be mixed with Lava 20, allowing for the application of a single coat up to 3mm in thickness. This approach is particularly useful when working on tight schedules or in cooler temperatures, where a fast cure time is beneficial.
Once the main coating is applied, an optional top coat can be added to enhance the finish and provide additional protection. The top coat not only improves the aesthetic appeal of the surface but also adds another layer of durability. Whether opting for a clear finish to maintain the natural look of the material or choosing a coloured top coat to match a specific design scheme, the final result is a seamless, waterproof surface that is both functional and visually pleasing.
Felt and asphalt roofs present their own unique challenges, but Lava 20 is more than capable of handling these surfaces. The first step in this application process is to ensure that the surface is thoroughly cleaned and dried. This often involves using a power washer to remove any algae, dirt, or debris that may have accumulated on the roof. For areas that are relatively clean, a simple broom and blower can be used to prepare the surface.
After the surface is clean, it should be primed using the Lava 20 quick primer. The primer setting time is just 10 to 15 minutes, allowing for a rapid application process.
Once primed, the waterproofing process can begin. When applying Lava 20 over felt or asphalt, it’s important to use chop strand matting to reinforce the waterproofing layer. This matting is embedded into the Lava 20, creating a reinforced layer that enhances the system’s durability and flexibility. By following this method, a fully reinforced waterproofing system is created, offering superior protection against leaks and surface damage.
In areas where additional reinforcement is needed, such as corners, joints, or around skylights, Lava Detail 20 can be used to provide extra strength. This fibre-reinforced liquid is designed to be thixotropic, meaning it can be applied on vertical surfaces without dripping. This property makes it ideal for detailed work where precision and durability are essential.
Applying the Lava 20 Waterproofing System to metal surfaces requires some additional steps, particularly if the metal is rusty or in poor condition. The first step in this process is to treat any rust with a specialised rust treatment product like Owatrol Oil. This treatment penetrates the pores of the metal, driving out air and moisture that could otherwise cause the rust to spread. Once the rust is treated and the surface is clean and dry, it’s ready for priming.
Priming metal surfaces with Lava 20 quick is crucial to ensure proper adhesion of the waterproofing system. After priming, any weak joints or cracks should be reinforced using Lava 20 in combination with polyester fabric. This step is essential for creating a durable, long-lasting bond that will remain flexible and strong, even in the face of thermal expansion and contraction.
Once the joints and cracks are reinforced, the entire area can be coated with Lava 20. This coating not only waterproofs the surface but also provides a flexible, rubberised finish that can withstand ponding water and the temperature extremes typical of metal surfaces. The end result is a waterproof system that not only protects the metal but also extends its lifespan by preventing further rust and deterioration.
Concrete roofs and balconies present their own set of challenges, but the Lava 20 Waterproofing System is well-equipped to handle them. The first step in the application process is to fill and smooth any joints or cracks with polyurethane mastic. This ensures that the surface is even and free of any gaps that could compromise the waterproofing layer.
Priming the surface is the next crucial step. Before applying the primer, it’s important to make sure the concrete is clean and dry, as any moisture or dust could affect the adhesion of the waterproofing material. Lava 20 offers both a super quick primer and a quick primer, allowing for flexibility in the application process. The super quick primer is ideal for projects with tight timelines, as it cures in just 10 to 15 minutes, allowing the waterproofing to be applied almost immediately.
After priming, any cracks or joints should be reinforced with polyester fabric tape, followed by a liberal application of Lava 20. This reinforcement process is key to ensuring the long-term durability of the waterproofing system, as it helps to prevent cracks from reappearing and compromising the integrity of the coating.
The main waterproofing layer of Lava 20 can be applied in one or two coats, depending on the specific requirements of the project. When using the catalyst, the curing process is accelerated, allowing the surface to be walked on or top-coated the same day. This fast cure time makes Lava 20 an ideal choice for projects that need to be completed quickly, especially in colder temperatures where other systems might struggle to cure properly.
For areas that will experience high foot traffic, such as balconies or walkways, an anti-slip finish can be added to the Lava 20 system. This is achieved by applying a clear top coat over the waterproofing layer, followed by the application of quartz aggregate to create a textured, non-slip surface. Once the quartz is in place, a final layer of clear top coat is applied to seal the surface, resulting in a fully waterproof, impact-resistant, and slip-resistant finish.
The Lava 20 Waterproofing System offers a comprehensive solution that meets the demands of a wide range of waterproofing projects. Its combination of durability, flexibility, and ease of application makes it a standout choice for both residential and commercial properties. Whether you’re dealing with a flat roof, balcony, car park, or any other surface that requires reliable waterproofing, Lava 20 provides the protection you need with the added benefit of a long-lasting, aesthetically pleasing finish.
By choosing Lava 20, you’re investing in a system that not only saves time and money but also delivers superior performance in even the most challenging environments. With its 25-year waterproofing guarantee and the ability to customise the finish to suit any project, Lava 20 is the ultimate waterproofing solution for today’s demanding construction needs.
