CONSULTING ” DECKING BOARDS ” concealed screwing
There are various systems for the concealed screwing of wooden decking. But which one is best suited and what are the different advantages and disadvantages? Our comparison gives you an overview.
The systems for concealed fastening of wooden decking can be divided into two construction methods. Some systems rely on the decking boards being screwed in from below, while others work by fastening the boards from the side. Both solutions offer different advantages and disadvantages. All in all, however, we have had better experiences with the screw connection from below, which is why we recommend this solution to our customers.
Screw connection from below
✓ Decking can work
✓ Low risk of splintering
✓ Secure hold
✓ Good ventilation of the terrace
✓ Suitable for every plank profile
x Relatively complex assembly
Lateral attachment
x Decking should not work
x Increased risk of splintering due to milling
x High risk of default
x Poor drying of the side groove
x Side grooving of the planks necessary
✓ Relatively simple installation
| System: Verschraubung von unten |
| Material: Edelstahl |
| Bedarf je Kreuzung TD/UK: 2 Clips |
| Bedarf Schrauben je TD/UK: 5 Schrauben |
| Preis je qm*: 18 € |
| Aufbauhöhe: 6mm |
| Breite: 27mm |
| Länge: 54mm |
| Dielenbreite: jede Dielenbreite möglich |
| Demontage: min. 6mm Fuge |
| Holzschutz: sehr gut |
| Holzarten: jedes Terrassenholz |
| Besonderheit: auch in schwarz verfügbar |
Fazit: Das technisch beste System für die verdeckte Befestigung von Holzterrassen. Allerdings auch aufwendiger als manch andere Lösung.
| System: Screw connection from below |
| Material: galvanized steel |
| Requirement per crossing TD/UK: 1 strip |
| Screws required per TD/UK: 3 screws |
| Price per square meter*: 12 € |
| Installation height: 5mm |
| Width: 25mm |
| Length: 190mm |
| Plank width: 95 to 150mm |
| Disassembly: not possible |
| Wood protection: good |
| Wood types: any decking wood |
| Special feature: the classic |
Conclusion: Relatively inexpensive system, but requires more space on the substructure and is not available in stainless steel.
| System: side mounting |
| Material: Stainless steel |
| Requirement per TD/UK junction: 1 connector |
| Screws required per TD/UK: 2 screws |
| Price per square meter*: 20 € |
| Installation height: n.a. |
| Width: n.a. |
| Length: n.a. |
| Plank width: any width |
| Disassembly: not possible |
| Wood protection: good |
| Wood types: any decking wood |
| Special feature: plank tends to splinter |
Conclusion: Expensive as an extra lever tool costing approx. 300 € is required. Technically critical as mandrel is pressed in sideways without pre-drilling.
| System: Screw connection from below |
| Material: plastic |
| Requirement per TD/UK junction: 1 clipper |
| Screws required per TD/UK: 3 screws |
| Price per square meter*: 18 € |
| Installation height: 15mm |
| Width: n.a. |
| Length: n.a. |
| Plank width: 120mm to 150mm |
| Disassembly: not possible |
| Wood protection: very good |
| Wood species: no hardwood |
| Special feature: Joint spacing is specified |
Conclusion: Similar to the Früh plank holder with continuous strip. Unfortunately made of plastic and not suitable for hardwood. The system with the greatest installation height.
| System: Screw connection from below |
| Material: Stainless steel |
| Requirement per TD/UK crossing: 2 DielenFix |
| Screws required per TD/UK: 5 screws |
| Price per square meter*: 23 € |
| Installation height: 5mm |
| Width: 20mm |
| Length: 61mm |
| Plank width: any plank width |
| Disassembly: min. 8mm joint |
| Wood protection: very good |
| Wood types: any decking wood |
| Special feature: similar to the BioMaderas clip |
Conclusion: Almost identical to the BioMaderas Clip and technically a very good solution. Small drawback: the price and the larger gap for disassembly.
| System: side mounting |
| Material: Stainless steel |
| Requirement per TD/UK junction: 1 connector |
| Screws required per TD/UK: 1 screw |
| Price per square meter*: 13 € |
| Installation height: 0mm |
| Width: n.a. |
| Length: n.a. |
| Plank width: any plank width |
| Disassembly: min. 6mm joint |
| Wood protection: moderate |
| Wood types: any decking wood with groove |
| Special feature: in-house development of softwood |
Conclusion: Clever solution, as it is quick and inexpensive to install. Unfortunately at the expense of constructive wood protection, as poor ventilation and planks with grooves are necessary.
* Prices for 120mm plank width and 5mm joint, as of December 2020.
Table of contents
Overview of the process
Calculate demand
Calculate costs
Order wood samples
Wood decking shipping
Temporary storage
Building instructions for wooden decking
Shopping list
Preparing the substrate
Meadow or earth
Stone or concrete
Roof or balcony
Slope
Laying the foundation
Creating height compensation
Laying the substructure
Installing decking boards
Select saw blade
Screwing decking boards
Assembly instructions for decking screws
Assembly instructions Clips
Veneering wooden decking
Building stairs
Decking boards crooked
Typical errors
Maintain
Cleaning
Enjoy
Decking quality
Best decking wood
Wood species comparison
Manual sorting
Cracks and curvature
Durability of wooden decking
Wood vs. aluminum
Concealed screw connection comparison
Branded products
Finger-jointing
