Expert consultation
Talk to a fastener expert
Speak with the right specialist from the start
Choosing the right fastener is rarely only about dimensions. It is also about substrate, corrosion resistance, drilling capacity, clamp length and how the solution is expected to perform over time. At Unite Fasteners, we help customers turn technical requirements into safe, practical and reliable fastening solutions.
Whether your question concerns roofing, cladding, structural steelwork, ventilation, sandwich panels, stainless fasteners or standing seam roofing, the goal is the same: to connect you with the right specialist early and help you move forward with greater confidence.
- Direct access to specialists across Unite, Marutex and Bjarnes System
- Guidance on corrosion classes, drilling capacity, clamp length and application fit
- Support for roofing, sheet metal, steel, sandwich panels and standing seam roofing
- Help with technical questions, product selection and smoother project flow
SPECIALIST KNOWLEDGE. PRACTICAL FASTENER GUIDANCE
Meet the Experts Behind Better Fastening Solutions

Unite and Marutex Guidance for Corrosion-Critical Applications
Tommy Norderhaug has worked in the fastener industry and at Unite since 2007. He helps customers and specifiers choose the right fastening solutions across Unite and Marutex, with broad experience of applications in steel, facade, roofing and other technically demanding environments.
- Unite core fastening range
- Application matching for practical site conditions
- Clamp range, fit and product choice
- Reliable guidance for everyday professional fixing needs

Bjarnes System Guidance for Standing Seam Roofing
Marcus Hultgren is the specialist for Bjarnes System and helps customers with fastening solutions for standing seam roofing. His scope includes clip selection for different substrates, questions around thermal movement, and practical guidance for technically sensitive roofing details.
- Bjarnes System clips and system guidance
- Support for standing seam roofing applications
- Help with fixed and sliding zones, movement and fastening principles
- Guidance for insulated roofs and Krabban solutions

Marutex Guidance for Stainless Fastening in Harsh Environments
Mikael Blank helps customers with Marutex and other stainless fastening questions where corrosion resistance, drilling performance and long-term reliability are important. He is a relevant contact when the project calls for stainless solutions in exposed and demanding environments.
- Marutex stainless fastening solutions
- Support in harsh and corrosion-exposed environments
- Guidance on drilling capacity, clamp length and application fit
- Help for projects from thin sheet metal to heavier steel fastening situations

Cross-Brand Support for Technical Selection and Project Flow
Tomas Bergström brings more than 15 years of industrial sales experience and five years at Unite. He supports customers across Unite, Marutex and Bjarnes System, combining technical application understanding with a strong cross-brand overview.
- Support across Unite, Marutex and Bjarnes System
- Guidance for steel construction, roofing, ventilation and sandwich panels
- Help with corrosion classes, stainless grades and application matching
- Support for availability, repeat needs and smoother project flow
Not sure which specialist fits your application?
If you are unsure who to contact, call our main line and we will help you reach the right specialist. Whether your question concerns Unite, Marutex, Bjarnes System or a more specific fastening challenge, we will help you get to the right expertise from the start.
Can you help me choose the right fastener for my application?
Yes. We help customers choose fastening solutions based on the application, the substrate and the performance required in practice — not only on size alone. For this type of question, we recommend speaking directly with Tommy Norderhaug on +46 522 65 33 90 or Tomas Bergström on +46 522 65 33 90.
Can you help with roofing, cladding, structural steelwork and ventilation projects?
Yes. Unite’s range and support clearly cover professional fastening needs in roofing, cladding, structural steelwork, ventilation and related installation situations. For projects like these, we recommend Tommy Norderhaug on +46 522 65 33 90 or Tomas Bergström on +46 522 65 33 90.
Can you advise on corrosion classes and environmental exposure?
Yes. Corrosion class is a key part of correct product selection. We can help you think through the expected environment, the required durability and whether the fastening solution should be matched to a more demanding corrosion category from the start. For this kind of question, we recommend Tommy Norderhaug on +46 522 65 33 90 or Mikael Blank on +46 522 65 33 91.
Can you help me decide whether I need a stainless fastening solution?
Yes. That is especially relevant when the project involves harsh environments, corrosion exposure or longer-term durability requirements. Marutex is specifically positioned for stainless fastening where corrosion resistance is critical, so this is exactly the kind of question worth discussing before ordering. We recommend Mikael Blank on +46 522 65 33 91 or Tommy Norderhaug on +46 522 65 33 90.
Can you help with drilling capacity and steel thickness questions?
Yes. Drilling capacity must be matched to the actual substrate thickness. Marutex documentation specifically supports fastening in relevant steel thicknesses up to 15 mm for certain applications, so this is not a detail to guess. For help matching screw and substrate, we recommend Mikael Blank on +46 522 65 33 91 or Tommy Norderhaug on +46 522 65 33 90.
Can you help me understand clamp length before I order?
Yes. Clamp length is an important part of correct product fit, and the Unite material explains that both the outer layer and the substrate must be counted. Marutex also highlights that the full clamping length can be used. If you want to review the right fit before ordering, we recommend Tommy Norderhaug on +46 522 65 33 90 or Mikael Blank on +46 522 65 33 91.
Can you help with standing seam roofing and Bjarnes System questions?
Yes. Bjarnes System is built around standing seam roofing and covers clip selection, fastening principles and technically sensitive roof details. For questions about Bjarnes System, standing seam clips or related roof build-ups, we recommend Marcus Hultgren on +46 522 65 33 90.
Can you help with wind load, fastening plans and clip spacing?
Yes. The Bjarnes System handbook explicitly states that wind load calculations and the fastening plan should be developed correctly, and that Bjarnes System will gladly help with this so that the customer can feel confident in the chosen solution. For that kind of support, we recommend Marcus Hultgren on +46 522 65 33 90.
Can you help with fixed zones, sliding clips and thermal movement in standing seam roofing?
Yes. These are core technical topics in the Bjarnes System handbook. If your project involves thermal movement, fixed and sliding zones or movement capacity in standing seam roofing, it makes sense to check the solution before installation. For this type of question, we recommend Marcus Hultgren on +46 522 65 33 90.
Can you help with insulated roofs and Krabban solutions?
Yes. Bjarnes System includes dedicated guidance for insulated roofs and the Krabban system, including telescopic sleeves, insulation compression and suitable standing seam applications. If that is what your project needs, we recommend Marcus Hultgren on +46 522 65 33 90.
Can you help with material selection when corrosion resistance and long-term performance both matter?
Yes. In many projects, the right choice depends on more than one factor at the same time. Material type, corrosion exposure, drilling performance and expected lifespan all need to work together. That is why it often makes sense to discuss the fastening solution before ordering. We recommend Mikael Blank on +46 522 65 33 91 or Tommy Norderhaug on +46 522 65 33 90.
Can you help with technically demanding project-specific fastening questions?
Yes. Unite’s material makes it clear that some customer needs are project-specific and that support is available when a standard answer is not enough. If the requirement is unusual, technically sensitive or difficult to match to an existing product, we recommend Tommy Norderhaug on +46 522 65 33 90 or Tomas Bergström on +46 522 65 33 90.
