Frequently Asked Questions

Here are the most frequently asked questions. If you can't find an answer to your question you are very welcome to contact us.

We always order standard lengths and then cut them - why should we choose RdBX?
- By using RdBX, you will always achieve easier assembly, even if you only utilize half of the benefits. If you have many different heights in a project, it might be a good idea to use telescopic studs - the telescopic solution is much faster than cutting studs. If the reason for cutting on-site is small height differences - 10-15 mm - we recommend that you choose a runner with a higher flange in combination with RdBX - this way you avoid cutting.
We often see height differences that arise due to e.g. fire insulation of steel girders - is it possible to cut RdBX?
- For small adjustments in the range of 1-6 cm, cutting is easily performed by clipping off the flanges - the back consists of the "flap" and is simply folded away. There is thus no need for profile cutting in case of small adjustments. Fix the stud in the runner using a fixing tool.
Where can I find the sound and fire-proofing values for RdBX?
- RdBX has the same properties as RdB. Consequently, you can use the corresponding sound and fire-proofing value tables. You can read about these here (page 38 and forward), where you can also see the recommended maximum wall heights for different wall types.
We mount gypsum without fixing the studs - why should we use RdBX?
- When mount gypsum without fixing the studs, there are two problems to overcome. The first is the risk of the studs falling, causing a domino effect. With RdBX, this is avoided. The other issue, which is perhaps even more important, is that with a fixed stud you avoid the studs bending during gypsum mounting - a bending stud can cause indentation of the gypsum boards - which would incur additional work for the painters. So fix with RdBX and you will avoid falling studs and get happy painters.
We use runners with small top and bottom flanges to reduce the risk of cutting injuries when installing studs - why should we use RdBX?
- With RdBX there is no need to use your hands to support the flange. The flap can be depressed using e.g. a spirit level or just a pin - the risk of cutting injuries is minimal. Use a runner with a higher flange for simpler assembly and less susceptibility to variations in room height.
Is it possible to have the studs delivered with the flap depressed?
- No, because then they will be fixed in the telescopic function and cannot be disassembled. Do not depress the flaps before you have distributed the studs!
Is there a risk of breaking off the flap?
- No, not for normal wall mounting where you depress the flap once or twice. You can break off the flaps by bending them back and forth repeatedly - eventually, the metal will fatigue and break.
Which dimensions are available?
- RdBX is available in dimension 70, 95 and 120.
How have you protected this product?
- The product is patent pending throughout the world. This is a very strong patent.
How does insulation work between the studs using the telescopic solution?
- For partition walls, the volume of insulation controls the sound-proofing values. In other words, complete filling is not required to obtain the same sound-proofing value. This is different from heat insulation of a wall where you would strive for complete filling in order to avoid movements in the air.
Can you extend telescopically in e.g. three sections?
- No, this is not recommended.
Is there a risk of the back plate bending when mounting gypsum on the telescopic solution?
- If you mount the gypsum in such a way that the gypsum is fixed in the studs above and below the joint, there is no risk of this occurring. If you are still unsure, you can add a screw to avoid this.