Cable and pipe penetrations for walls and ceilings in Alfter — approved, tested, documented. Promat, Hilti, Würth · S30 to S90 · existing stock, new build, retrofit.
Penetration seals are building-authority-tested closures of wall and ceiling openings. They prevent fire and smoke spread for the same duration the wall itself is rated for — 30, 60 or 90 minutes. Without a seal, every cable, pipe or duct that crosses the wall becomes a weak point for flames and smoke.
The system depends on opening size, occupancy density and wall type.
Classic in Alfter stock: cables through F30/F90 wall, mineral wool with coating or board with collars.
Fire damper or duct seal — coordinated with the concept, integrated into the duct line.
Vertical penetration — usually box-style, accessible from above, expandable for future cables.
Intumescent collar for plastic pipes, mineral wool insulation for steel — system-dependent, per approval, documented in the penetration plan.
Cable and pipe in the same opening — Promat combination, Hilti CFS-CT, Würth fire-stop solution.
Take over multi-brand stock in Alfter, consolidate in the penetration plan, prepare for consultant sign-off. Audit-ready in Alfter.
Every system carries an approval number — we deliver the documentation in Alfter.
Governs electrical line routing in fire protection — applies in NRW.
EI rating for penetration seals — used parallel to DIN, EU-recognised.
Defines the S-rating for cable seals in Alfter buildings.
Ranges depend on opening size, density and system. Fixed quote after walkthrough.
Fixed offer after walkthrough in Alfter.
A penetration plan documents every seal in the building — location, system, date, installer. Mandatory for public buildings, special-use, larger properties in Alfter.
Walkthrough in Alfter → defect list → fixed offer.
