Unite sandwich panels to concrete
Sandwich Panel Screws for Concrete Structures
Sandwich panel fasteners for concrete structures
Our sandwich panels to concrete range is designed for projects where sandwich panels need a secure fixing into a concrete structure. The family is built around EK screws with a specially developed thread, hexagon head and bonded EPDM sealing washer.
When choosing within this range, the key checks are the panel thickness, the required drill diameter and the corrosion class needed for the environment. We also show the matching hammer drills used for installation in concrete, so the page supports both product choice and practical site preparation.
What is included in our sandwich panel to concrete range
6.3 mm EK screws for standard panel depths
Choose our 6.3 mm EK screws when you are fastening sandwich panels to concrete and the panel build-up sits in the thinner part of the range. This is the right starting point when you need a concrete fixing for shorter panel depths and a clear, straightforward installation setup.
See sizes and details for our 6.3 mm sandwich panel to concrete screws on page 32 in the catalogue.
7.5 mm EK screws for thicker panel build-ups
Choose our 7.5 mm EK screws when the sandwich panel build-up is thicker and the project calls for a longer fixing into the concrete structure. This part of the range is the better fit when you need coverage for larger panel thicknesses and longer screw lengths.
See sizes and details for our 7.5 mm sandwich panel to concrete screws on page 32 in the catalogue.
Hammer drills for concrete installation
Use the matching hammer drills when the installation needs the correct hole preparation in concrete before fixing the panel screw. Keeping the drill diameter aligned with the selected screw series helps the team choose faster and avoid delays when moving from specification to installation.
See the hammer drills for sandwich panel to concrete installation on page 32 in the catalogue.
Detailed sandwich panel to concrete data in our catalogue
In the catalogue below, you can compare the EK screw designations, the supported panel thickness ranges, the required drill diameters and the pack quantities for this product family.
The same page also shows the hammer drills for installation in concrete, which makes it easier to move from product choice to site-ready installation planning.
Need help choosing the right sandwich panel fixing for concrete?
We help contractors, panel installers and project buyers choose the right sandwich panel to concrete fixing based on panel thickness, drill diameter, corrosion class and practical installation needs. If you want to narrow the range quickly, our team can help you match the right EK screw and the right drill setup for the job.
How do I choose between the 6.3 mm and 7.5 mm EK series?
Start with the panel thickness and the required drill diameter. The 6.3 mm EK range covers the thinner part of the family, while the 7.5 mm EK range takes over when the panel build-up becomes thicker and a longer fixing is needed into the concrete structure.
What should I check before ordering sandwich panel screws for concrete?
Check the panel thickness, the concrete substrate, the required drill diameter and the corrosion class for the environment. Those are the main factors that decide which EK designation is the better fit for the project.
Do I also need hammer drills for this installation?
In many concrete installations, yes. Our catalogue page for this family includes the matching hammer drills, so you can line up the screw choice with the hole-preparation step instead of treating the drill as a separate afterthought.
Why does corrosion class matter on a sandwich panel to concrete project?
Corrosion class affects whether the fixing is suitable for the environment where the panel system will be used. On this range, it is important to check the project conditions early, especially when the build is exposed and long-term durability matters as much as the initial installation.
What installation mistake should we avoid with sealed sandwich panel screws?
A common mistake is moving too fast past the basics: choosing the wrong drill diameter, or over-tightening a screw with a bonded sealing washer. A better approach is to confirm the correct EK designation first, then match the drilling setup and tighten with control so the sealing function is not compromised.