SPAX-Iso, fixing thread, cylindrical head, T-STAR plus, 4CUT, WIROX

  • Application: Roofs and facades
  • Suitable for installing soft materials used in over-rafter insulation
  • The fixing thread holds the counter-batten tight and transfers the compressive forces. This keeps the insulating material in shape.
  • Approved by building authorities

Special features

T-STAR plus

Positive and secure fit of the BIT and better driving, e. g. when working overhead.

Cylindrical head

Can be easily countersunk in wood.

Ground serrations

For quick and secure fastening.

Fixing thread

Holds the batten at the correct clearance and bears the load.

4CUT point

No pre-drilling (wood-dependent), its point effectively reduces the splitting effect. The square end pushes aside the fibre of the wood and reduces the screwing-in torque.


WIROX surface with high protection against corrosion, it is free from chromium-VI, and is hence considerably more environmentally friendly than conventional surfaces.



European approval

Made in Germany

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Product leaflet - SPAX Iso



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