RAPID® Top-2-Roof
Top 2 Roof is designed to connect timber to timber through a spacer like roof top insulation.
1 | Head geometry
- Minimized blast effect
- The head can penetrate deeply
- Improved power transmission thanks to higher driving depth
2 | Thread
- Quicker screwing
- Minimized blast effect
- Lower torque during fastening
- No pre-drilling required
3 | Friction part
4 | Tip
Available sizes
RAPID® Top-2-Roof are available in 8 x 240 to 8 x 450 mm.
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Additional information
| Head Geometry | Cylinder Head |
|---|---|
| Shank Geometry | Friction Part |
| Thread Geometry | Coarse Thread, Partially Threaded |
| Tip Geometry | Follower Tip |
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Cylinder head
Reduced blast effect Head is able to countersink deep into material Improved force transfer thanks to deeper drive
Friction Part
The friction part reduces screwing resistance by opening the hole slightly wider than the screw shank. It is usually combined with the half thread.
Friction Part Geometries
Coarse Thread
Coarse thread allows for up to one third faster install time due to a higher pitch of the thread.
Coarse Thread
Partially Threaded
Partially threaded screws, also known as half thread, pull timber members or steel plates and timber together. For the design head pull-through and withdrawal of thread must be checked. Lateral loads as well as axial loads are efficient transferred.
The axial load capacity of the thread in comparison to the countersunk head is approx. 3:1. Using a washer head screw leads to a similar performance of the thread pull out and the head pull through capacity.
Follower Tip
Patented follower thread is an additional smaller thread at the very tip of the screw for a quick bite also at inclined positions.
Follower Tip