Always bespoke: cable and pipe penetrations engineered for fire and moisture performance—COWL sleeves and Roxtec transits delivered as installation-ready sealing packages.

We design, fabricate and install COWL wall penetrations and sealing systems to protect critical electrical areas from moisture ingress and support the project fire strategy. COWL penetrations are supplied in stainless steel or aluminium, in square or round profiles, with mineral wool infill and moisture-resistant sealing compounds as specified—providing a robust, buildable interface through walls and partitions.

Where modularity and future cable changes are expected, we supply and install Roxtec cable transits. Roxtec’s modular system allows practical adaptation to cable diameters while maintaining reliable sealing performance against dust and moisture, supporting clean installation and maintenance over the asset lifecycle.

Delivery is managed as a coordinated package: set-outs and opening details, fabrication, logistics and site installation, supported by documented QA/QC and handover information. The result is a consistent, inspection-ready penetration solution that reduces rework and supports programme timelines and deadlines on fast-track projects.