Always individually designed: cable and pipe penetrations with the required fire resistance and moisture protection – COWL sleeves and Roxtec systems delivered as ready-to-install sealing packages.

We design, prefabricate, and install COWL wall penetrations and sealing systems that protect critical electrical zones from moisture ingress and support the implementation of a facility's fire strategy. We supply COWL penetrations in stainless steel or aluminum, in rectangular or round profiles, with mineral wool filling and moisture-resistant sealants according to project requirements. This ensures a durable, tight, and ready-to-install penetration through walls and partitions.

Where modularity and future changes to cable routes are required, we supply and install Roxtec transits. The modular Roxtec system allows for virtually any seal to be tailored to cable diameters while maintaining reliable protection against dust and moisture. This supports clean installation and efficient maintenance throughout the facility's lifecycle.

We deliver the project as a coordinated package: from staking out and opening details, through prefabrication and logistics, to on-site assembly. The entire process is supported by documented QA/QC activities and comprehensive acceptance and handover information. The result is a coherent, inspection-ready solution for installation transitions that reduces rework and supports adherence to schedule and key deadlines on fast-track projects.