Why professional joints matter
Joints are small but do a big job: they keep moisture out, absorb movement and deliver a calm finish.
Project in Zürich (Central Switzerland): tone‑in‑tone match, consistent geometry and documentation with photos and batch numbers.
Common failure patterns
- Cracks/shrinkage: Joint splits or pulls back – wrong geometry or ageing.
- Adhesion loss: One‑side debonding due to missing primer.
- Mould: Persistent moisture or wrong product in wet areas.
- Colour: Noisy look due to poor tone‑in‑tone match.
Act early to avoid costly moisture damage.
Applications
Bathroom & shower
Sanitary silicone.
Windows & doors
Interior finish, exterior UV‑stable.
Outdoors
Movement joints in concrete/stone.
Step by step
- Assessment: width/depth, substrates, movement, moisture, colour.
- Masking: protect adjacent surfaces, prepare crisp edges.
- Removal: old sealant out, clean and degrease bond faces.
- Backer rod: sized to avoid three‑sided adhesion.
- Primer as required by the system.
- Application: even extrusion, geometry per detail.
- Tooling & finish: calm edge, tone‑in‑tone. Photo documentation & batch records.
Silicone, hybrid or PU?
- Sanitary silicone: high elasticity, mildew‑resistant; not paintable.
- Hybrid: wide adhesion, low odour; partly paintable; robust outdoors.
- PU: strong and durable for more mechanical stress.
Tone‑in‑tone & finish
Colours match the substrate; crisp edges deliver a premium look.
Quality & documentation
- Photo report
- Product/primer/batch
- Handover & care guidance
Case study Zürich
Old sealant removed, bond faces prepared, backer rod sized, Sanitary executed to system.
About the clip
Clip shows: removal, prep, priming, applying, tooling. Timings depend on the system.
Facts
Industry
Construction / Sanitary
Systems
Hybrid, silicone, PU
Execution & documentation
Execution: Masking, priming, even extrusion, clean tooling. Documentation incl. batch records.
Tips & tricks
- Squeegee after showering and ventilate.
- Use mild detergents; avoid scouring agents/solvents.
- Do not paint over or over‑seal movement joints.
- Keep exterior joints clean – no grit in the section.
- Visual check every 2–3 years; replace early if cracks appear.
Next step
Projects in Lucerne or Zürich? We provide fast, professional advice for new builds, refurbishments or single jobs.
Our team can be on site at short notice. Use the contact form or book a slot.
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