Defective windows and doors after installation: airtightness, fittings, moisture, warranty and evidence under Austrian law.
BRANDAUER Rechtsanwälte
Salzburg law firm for real estate, construction and corporate law
Every matter is handled by a coordinated team of lawyers, legal staff and specialists. In construction cases we look at contract, evidence, deadlines and commercial consequences together.
Leaking windows, sticking doors or damp connection joints are not merely comfort issues. In a new build or renovation they can trigger warranty, damages and retention questions.
What matters is whether the defect is described specifically and documented with evidence. Draughts, moisture, fittings, glazing and installation joints should not only be complained about orally.
This article covers the specific component case of windows and doors and distinguishes it from general defects, mould and sound insulation.
Answer two short questions for initial orientation on documents, risk and next step.
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The right response depends on whether you are still planning, already building or already reacting to a dispute.
Review Defective windows and doors after installation before instructing works, paying or starting construction, based on contract, plans and authority status.
This preserves room for negotiation, evidence and legal position.
If the documents are complete, claim, evidence and response can be reviewed separately.
The next response can then be prepared in writing and in a traceable way.
If files, photos or plans are missing, the facts should be secured first.
Only then is a reliable legal assessment possible.
If deadlines, a construction stop, costs or court steps are threatened, a general assessment is no longer enough.
Claim, evidence and next step must be reviewed specifically.
A useful defect notice does not merely state that a window leaks. It describes where draught, water, condensation, warping or fitting problems appear and when the defect was first noticed.
Photos, short videos, measurements, maintenance documents and correspondence help preserve the condition before repair. The condition of connection joints, seals and fittings is particularly important.
In business-to-business cases, the duty to give notice under section 377 UGB may also matter. Consumers should also react quickly in writing, even if that special rule does not apply in the same way.
Warranty under Austrian civil law is linked to the defect being present at handover. For buildings the warranty period is generally three years from handover.
Damages additionally require fault and may cover consequential loss such as moisture damage to interior finishes or furniture. Limitation must be reviewed separately.
The distinction decides which evidence is needed and whether remedy, price reduction, retention or compensation for consequential loss is central.
Quick repair can make sense, but it should not destroy evidence. Before seals, fittings or entire elements are replaced, the original condition should be documented.
Anyone withholding payment should state the reason and amount in a traceable way. A blanket retention can become a dispute in itself.
For deadlines and initial orientation, use the construction defects deadline tool.
The overview shows which practical questions should be kept apart.
| Level | What it concerns | Typical risk |
|---|---|---|
| Airtightness Airtightness | Draught, driving rain, condensation and connection joint | Record photos, video, measurement and weather |
| Function Function | Sticking, closing, fittings and locking | Film operation and document dates |
| Consequential loss Consequential loss | Moisture, finishes or mould suspicion | Preserve condition before remediation |
The specific assessment depends on contract, documents and procedural status.
This sequence helps prepare the matter in a structured way.
Collect contract, plans, photos, authority decisions and correspondence before making the next statement.
Collect contract, plans, photos, authority decisions and correspondence before making the next statement.
Separate authority, contract, neighbours and evidence.
Separate authority, contract, neighbours and evidence. This shows which legal track supports the next step.
Record the next step in writing and avoid statements that could later be read as acknowledgement.
Record the next step in writing and avoid statements that could later be read as acknowledgement.
Practical tip: Do not review only the technical solution. The decisive point is which legal level supports the next step. For ongoing construction-law updates, you can subscribe to the Brandauer newsletter. If you would like to discuss your case, you can book an initial consultation (72 euros).
For buildings the warranty period is generally three years from handover. The decisive points are when handover occurred, whether the defect is documented and whether special rules apply in the specific relationship.
Retention may be possible, but it must be objectively justified and proportionate. A blanket retention without assessment can create its own risk.
If cause, scope or consequential loss are disputed, the condition should at least be documented very well before repair and, if necessary, secured by an expert.
What should be documented at acceptance and defects.
Distinction from acoustic defects.
Where a component defect causes moisture.
Topic hub on defects, deadlines and evidence.
Time-limit concept for construction defects, notice and early evidence.
In construction law, deadlines and evidence decide. Call us directly or send an email, callback within one business day.
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