Rojan Fugentechnik

Renew silicone joints & PU joint renovation by a specialist company

Professional sealing indoors & outdoors

Do you want to renew silicone joints, renovate old PU joints, or need a durable elastic seal at your home, bathroom or windows? We are your specialized company for joint work, silicone sealing and elastic building seals.

Whether it’s mould in the bathroom, cracked balcony joints, leaking window connections or worn expansion joints – we deliver a clean, durable and professional solution.

  • 👉 precise craftsmanship
  • 👉 premium professional sealants
  • 👉 quick appointments
  • 👉 fair prices

Our services at a glance

Renew silicone joints

We completely remove old, porous or mouldy silicone and replace it with high-quality, long-lasting sanitary silicone.

Typical areas:

  • Bathroom, shower, WC, kitchen
  • Floor tiles, wall connections

Renew & renovate PU joints

Over time, PU joints become hard, crack or detach. We cut them out professionally, prepare bonding surfaces and create a new permanently elastic seal.

Ideal for:

  • Window connections, façades
  • Expansion joints, concrete elements

Mouldy bathroom joints

Black or discoloured silicone joints are not only unattractive but also unhygienic. We remove affected material completely and install new, anti-fungal and mould-resistant joints.

Balcony, terrace & plinth joints

Protection against water ingress, frost damage and cracking – important to maintain your property value.

Seal windows / connection joints

New elastic seals improve:

  • ✔ Thermal insulation
  • ✔ Weather protection
  • ✔ Sound insulation
  • ✔ Energy efficiency

Garage door joints

Reliable sealing against draughts, rainwater and dirt.

Seal window glass & frames

Renew old or leaking glass seals using suitable neutral-cure silicones.

Natural stone & engineered stone

Special silicones for granite, marble and sensitive surfaces – without edge staining.

Pool & swimming pool joints

For permanent moisture exposure and high loads – also suitable for chlorinated and salt water.

Fire protection joints F90

Approved systems for pipe and cable penetrations including backing cord.

Why we are the right partner

As a specialized joint sealing company, we focus exclusively on sealing. That means clean results, longer durability and professional workmanship.

  • ✔ specialized in silicone & PU
  • ✔ modern materials
  • ✔ clean workmanship
  • ✔ fast help for urgent cases
  • ✔ transparent pricing
  • ✔ high customer satisfaction

Service area

We are based in Niederkrüchten. We work for private clients, property management and businesses within up to 150 km. Longer distances are possible by arrangement.

Among others in:

  • Niederkrüchten
  • Brüggen
  • Schwalmtal
  • Nettetal
  • Viersen
  • Kempen
  • Grefrath
  • Willich
  • Tönisvorst
  • Mönchengladbach
  • Krefeld
  • Korschenbroich
  • Erkelenz
  • Wegberg
  • Heinsberg
  • Hückelhoven
  • Wassenberg
  • Geilenkirchen
  • Übach-Palenberg
  • Herzogenrath
  • Aachen
  • Jülich
  • Linnich
  • Aldenhoven
  • Baesweiler
  • Würselen
  • Eschweiler
  • Alsdorf
  • Ratingen
  • Meerbusch
  • Neuss
  • Düsseldorf
  • Duisburg
  • Oberhausen
  • Mülheim an der Ruhr
  • Essen
  • Bochum
  • Wuppertal
  • Solingen
  • Remscheid
  • Dormagen
  • Grevenbroich
  • Monheim am Rhein
  • Langenfeld
  • Hilden
  • Leverkusen
  • Köln
  • Bergheim
  • Pulheim
  • Erftstadt

Get your silicone joints renewed

Call us or send photos via WhatsApp or email. You will receive a quick professional assessment and a non-binding fixed-price quote.

➜ Simply use our contact page.

Frequently asked questions (FAQ)

How long does it take to renew silicone joints?

It depends on the scope. Small areas (e.g., a shower) can often be completed quickly. For larger projects, we agree on schedule and duration transparently in advance.

Do you completely remove mouldy joints?

Yes. We remove affected material completely and renew with anti-fungal, mould-resistant sealants.

Do you also renew PU joints on windows/façades?

Yes. Old PU joints are removed professionally, surfaces are prepared and then re-sealed with a permanently elastic system.

Do you work outside Niederkrüchten?

Yes. Typically within up to 150 km. Further is possible by arrangement.