Marutex sandwich panel fixings
Stainless sandwich panel fixings for light and heavy steel
Stainless sandwich panel fixings for steel substructures
Our Marutex sandwich panel fixings are designed for projects where you need stainless self-drilling screws for sandwich panels in exposed or demanding environments. On this page we stay focused on the Marutex range for fixing sandwich panels to light section steel, heavy section steel, and for fastening related sheet metal fittings to the panel.
The main selection question is not only screw length. You also need to match the fixing to the steel substructure, the required clamp length, and whether you are fastening the panel itself or only visible fittings such as pilasters. That is where this page helps you narrow the range before moving into the deeper catalogue tables.
What is included in our Marutex sandwich panel fixing range
Sandwich panels to light section steel
Choose our sandwich panel screws for light section steel when the panel is being fixed into thinner steel members and you need a stainless fixing with a sealing washer against the outer sheet. This is the right subgroup when the job is still in the light section range and does not need the heavier drilling range used for thicker structural steel.
Sandwich panels to heavy section steel
Use our sandwich panel screws for heavy section steel when the panel is going into thicker steel members and the fixing must cover a substantially heavier substrate. This subgroup is the better choice when a light-section screw would sit outside its intended drilling range and you need the Marutex option built for steel beam type applications.
Fittings to sandwich panels
Choose our fitting screws for sandwich panels when you are fastening pilasters or other sheet metal fittings to the panel rather than making the main panel-to-substructure connection. This subgroup sits beside the main panel screws because the installation need is different, and a dedicated pan-head fitting screw is usually the cleaner choice for visible detail work.
See details for our fittings to sandwich panels on page 11 in the catalogue.
Detailed Marutex sandwich panel fixing data in our catalogue
The catalogue below is where you can compare the Marutex sandwich panel range properly. Start with page 10 for fixings to light section steel, then move to page 11 for fixings to heavy section steel and screws for fittings to sandwich panels.
If the project is specification-driven, the Marutex type approval is also relevant because the approved intended uses name the EB and EC sandwich panel designations directly. That makes the catalogue especially useful when you need to confirm drilling range, clamp length and the correct subgroup before ordering.
Need help matching the fixing to your sandwich panel build-up?
We help contractors, installers and project buyers choose the right sandwich panel fixing for the actual job - not just the nearest screw length on paper. If you need support with steel thickness, clamp length, corrosion choice or the difference between panel fixings and fitting screws, our team can help you narrow the range quickly.
How do I choose between sandwich panel screws for light section steel and heavy section steel?
Choose first by the steel substructure, not by the visible panel alone. The light-section subgroup is for thinner steel members, while the heavy-section subgroup is for substantially thicker steel where the drilling range must cover beam-type applications. If that match is wrong, the fixing decision is wrong even if the length looks reasonable.
Do I use the same screw for the sandwich panel and for pilasters or other fittings?
No - not always. The main sandwich panel fixing and the screw used for fittings to sandwich panels solve different installation tasks, which is why they sit as separate subgroups in the range. If you are fastening pilasters or visible sheet metal details, a dedicated fitting screw is usually the better and cleaner choice.
Why does clamp length matter so much on sandwich panel fixings?
Clamp length matters because the screw has to suit the real build-up between the outer surface and the steel substrate. On sandwich panels, that build-up changes quickly with panel thickness, detail layers and installation condition. A fixing that is right for the substrate but wrong for the clamp length can still become the wrong choice on site.
What is the most common mistake when specifying sandwich panel fixings?
The most common mistake is choosing mainly by screw length and overlooking the actual substrate category and drilling range. Another common issue is treating panel fixings and fitting screws as interchangeable. Good specification starts with the steel type, then clamp length, then the exact installation purpose.
When is Marutex stainless the better choice for sandwich panel projects?
Marutex is the stronger option when the project environment makes corrosion resistance and long-term reliability more important. That is especially relevant in exposed industrial or coastal conditions, or where stainless specification is simply the safer route over time. It is often better to decide that material question early instead of revisiting it after the fixing layout is already set.
Can Unite help us choose the right sandwich panel fixing for our application?
Yes. We can help you narrow the choice based on panel build-up, steel thickness, clamp length and whether the job concerns the main panel connection or related fittings. That usually saves time in both specification and installation because the range becomes much easier to compare once the real application is clear.