How do I notice leaking window connections?

Drafts, condensation, moisture damage around reveals or discolored edges. Higher heating costs can also be a sign.

Do you seal only outside joints or also inside connections?

Both, depending on need. The key is a system-correct inside/outside build-up (tighter inside than outside).

Which systems do you use?

Depending on the connection: sealants, hybrid/MS polymer, tapes and appropriate pretreatment (primer) — matched to substrate and movement.

How long does it last?

Depends on UV exposure, movement and substrate. Proper prep and correct joint dimensions significantly increase service life.

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Window sealing – Zug

Window connections sealed & draft-free — weather-tight outside, airtight inside (principle: tighter inside than outside).

Eurofugen – Window sealing in Zug. Proper window connections prevent drafts, moisture ingress and heat loss. A functional build-up matters: weather-tight outside, airtight inside (tighter inside than outside).

Depending on the situation we use suitable sealants, tapes and system solutions. For refurbishment we remove old material cleanly down to a sound substrate.

Scope of work

Remove old material (where needed) + clean substrate
Prepare bond areas, primer if required
System-appropriate sealing (inside/outside) depending on connection
Neat finish, edge control
Final check + short maintenance advice

Outside: weather sealing

Outside the joint must resist driving rain while remaining building-physics compatible. We select systems to match substrate, movement and details.

Inside: airtightness

Inside, airtightness matters: preventing drafts and avoiding moisture in the structure. Clean preparation and correct bond areas are decisive.

FAQ (window sealing)

How do I notice leaking window connections?

Drafts, condensation, moisture damage around reveals or discolored edges. Higher heating costs can also be a sign.
Do you seal only outside joints or also inside connections?

Both, depending on need. The key is a system-correct inside/outside build-up (tighter inside than outside).
Which systems do you use?

Depending on the connection: sealants, hybrid/MS polymer, tapes and appropriate pretreatment (primer) — matched to substrate and movement.
How long does it last?

Depends on UV exposure, movement and substrate. Proper prep and correct joint dimensions significantly increase service life.