NEXLER – waterproofing leader



NEXLER Optimax PRO PV
Bituminous membrane for pitched roofs with a self-adhesive strip and nonwoven material on the top side
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NOx Cut PYE PV250 S53H
NOx Cut technology heat-weldable top layer bituminous felt
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Optimax PRO PV
Bituminous membrane for pitched roofs
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Protection Plates 1x1 m
Patch for photovoltaic frame fixing installation
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Reno Bit
Coating for renovation and maintenance of roof coverings
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Connect
One-component polyurethane-bitumen resin
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Flat Roof Renovation
Renovating flat roofs is essential for keeping them durable and functional. Our training will teach you how to effectively identify damage, select the best repair techniques, and use cutting-edge NEXLER products to ensure long-lasting durability and functionality. You will learn methods for both emergency repairs and long-term renovations, gaining the skills to address immediate problems and ensure a lasting roof warranty. The theoretical section will provide you with a unique opportunity to practice repairs under the guidance of experienced experts. This ensures you are fully prepared to handle real-world projects with confidence.

Foundation waterproofing
This training covers every key stage of foundation protection, from selecting the right system and applying thick-layer KMB waterproofing masses to implementing a full foundation drainage system. After a lecture on theory, participants will move on to hands-on exercises. This will give them the knowledge and skills they need to apply modern solutions on their own.

Selection of primers for weldable roofing felt
Discover the importance of choosing the right primer for roofing felt. We'll show you why proper application is crucial for a successful, long-lasting project. You'll get hands-on experience comparing different types of primers, all while building practical skills you can use right away. Our experienced NEXLER trainers will be there to guide you every step of the way.

Pitched roofs
This training combines essential theory with hands-on practice. You'll learn about key issues related to pitched roofs, such as proper ventilation, and participate in practical workshops to master the installation of bitumen shingles, all guided by experienced NEXLER trainers. This is a great opportunity to develop your skills and stand out in the roofing market!

Green Roof Systems
Join our training to master the design, construction, and maintenance of green roofs. Participants will learn about both extensive and intensive roof types, along with innovative NEXLER solutions that ensure their durability and functionality. The course combines an in-depth look at our best solutions with real-world examples, so you can immediately apply your new skills on the job.
Knowledge base
ArticleA roof with a vision – green solutions for investments
Green roofs in modern construction are not a passing trend, but a real market need driven by climate, urbanisation and regulatory challenges. They are a key element of sustainable development strategies, not only distinguishing investments on the market, but also having a real impact on their value and functionality. It is a space where ecology meets long-term safety and technical durability.
ArticleThe unsung hero of the roof – NEXLER NOx Cut
Growing social expectations and stricter environmental regulations are changing the face of the construction sector. Today, responsibility for the environment and the health of users is becoming an important part of the investment process. Modern construction is increasingly turning to solutions that not only reduce carbon footprint and energy consumption, but also improve quality of life.

12.02.2026
Repair of local damage to roofing felt – NEXLER Arbolex Aqua Stop

12.02.2026
Bonding shingles using NEXLER Arbolex Aqua Stop roofing sealant

12.02.2026
Bonding shingles using NEXLER Adhesive for roofing felt and shingles

12.02.2026
Water removal from the surface of NEXLER underlay felt (film-film type)
ArticleWhy is it worth priming the substrate before welding bituminous felt?
A roof that leaks after two seasons? Complaints, lost customer trust – something every roofer wants to avoid. That is why proper substrate preparation, including priming, is not a detail, but the foundation of durable and trouble-free roofing. Although it may seem like a mere ‘formality’, in practice, priming has a huge impact on the durability, safety and effectiveness of the entire waterproofing system. In this article, we explain briefly and concisely why priming is not an option but a necessity.

Extensive or intensive green roof? Find out which one to choose
Green patios on underground garage slabs are becoming increasingly popular.

Waterproofing foundations in a single-family home
Foundation waterproofing is a key stage in the construction of a single-family home, which determines the durability and functionality of the building.
ArticleNEXLER BITFLEX System for Foundation Waterproofing
Foundations are the cornerstone of any building, channelling its weight to the ground and ensuring structural integrity. For building longevity, robust protection against moisture and groundwater is absolutely essential.
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