Mettmann needs penetration seals that hold the fire-compartment boundary, pass the inspection, get signed off.
Penetration seals are approved closures of wall and ceiling openings. They hold the rated wall's integrity 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 direct path for flames and smoke.
The system depends on opening size, occupancy density and wall type.
Classic in Mettmann stock: cables through F30/F90 wall, mineral wool with coating or board with collars.
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.
Vertical penetration — usually box-style, accessible from above, expandable for future cables. Documented in the property log in Mettmann.
Fire damper or duct seal — coordinated with the concept, integrated into the duct line.
Take over multi-brand stock in Mettmann, consolidate in the penetration plan, prepare for consultant sign-off.
Governs electrical line routing in fire protection — applies in NRW.
Every system carries an approval number — we deliver the documentation in Mettmann.
Defines the S-rating for cable seals in Mettmann buildings.
EI rating for penetration seals — used parallel to DIN, EU-recognised.
Ranges depend on opening size, density and system. Fixed quote after walkthrough.
Fixed offer after walkthrough in Mettmann.
Yes — open seal, add cable, reseal. Standard service in Mettmann.
Call us — we take over the seal stock in Mettmann and continue it.
