Before a binding decision, risk can usually be steered best.
Check contract, plan version, technical documents and the planned statement before signing, paying or continuing works.
This preserves evidence, negotiating position and options.
Construction defects
Defective screed and floor build up: cracks, moisture and preserving evidence
Defective screed: clarify cracks, moisture, cause and evidence before repairs.
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9 July 2026 · Mag. Bernhard Brandauer, Rechtsanwalt
Cracks in screed, hollow areas or moisture below the floor first look technical. Legally, they quickly become a dispute about cause, repair and costs.
The decisive point is not to open or cover the floor build up too early. The condition must remain provable.
This article shows how owners and apartment purchasers can review screed defects in an orderly way.
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What is sensible now?
Answer two short questions. You receive initial orientation on which documents and reactions now matter.
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What is the main issue right now?
This helps separate preparation and reaction.
All paths at a glance
Overview of all answers.
With complete documents the legal position can be reviewed specifically.
If a dispute already exists, chronology and evidence count. They show whether payment, reservation, cure or enforcement is sensible.
The key is the link between contract, actual sequence and documented statements.
Missing evidence should be secured first.
If documents are missing, request and secure them immediately.
Photos, minutes, emails and invoices help make the facts reliable.
Classify cracks, hollow areas and moisture
Classify cracks, hollow areas and moisture
Not every small crack automatically means a serious defect. Still, every conspicuous damage pattern should be documented promptly.
Location, width, course, moisture values and connection with use or construction phase matter.
The earlier these points are recorded, the better drying, execution, material and use can later be distinguished.
Do not alter the floor build up too early
Do not alter the floor build up too early
Tiles, parquet, insulation and screed form a system. Looking only at the surface often misses the real reason for the defect.
Before opening or repair, clarify which layers are affected and who carried out the works.
Otherwise the other side may later argue that the cause can no longer be traced because of later works.
Document moisture and drying cleanly
Document moisture and drying cleanly
Moisture is particularly dispute prone because values, time and method are decisive. A single value rarely explains the whole case.
Measurement records, room climate, building drying and releases should therefore be reviewed together.
If covering happened too early, the additional question is who owed release, warning or control.
Separate repair costs and loss of use
Separate repair costs and loss of use
Screed defects may cause pure cure costs, consequential damage and loss of use. These positions should be prepared separately.
Each cost item needs evidence, cause and connection with the defect.
A clear schedule makes settlement, insurance notification and court enforcement easier.
Review evidence preservation before further works
Review evidence preservation before further works
If the floor will soon be closed or the apartment handed over, evidence can quickly be lost.
Then check whether photos and a private report are enough or whether court evidence preservation is sensible.
The decision depends on risk amount, urgency and the other side’s willingness to cooperate.
Checkpoints
Three levels of the legal review
The overview shows which questions should be checked separately.
| Level | Issue | Why it matters |
|---|---|---|
| Damage pattern Crack, hollow area or moisture | Starting point for documentation | |
| Cause Drying, build up, material or execution | Determines opponent and claim | |
| Evidence Photos, values and expert report | Secures later enforcement |
Before opening or covering, the evidential value of the current condition should be checked.
Process
Safe sequence in construction law
A short sequence helps connect technical and legal review.
- 0101
Record damage
- 0202
Clarify build up
- 0303
Secure evidence
Practical tip: Do not cover a suspicious floor too early. A finished surface can later hide the decisive evidence. Arrange an initial consultation (EUR 72)
Frequently asked questions
Defective screed and floor build up: frequent questions.
Is every screed crack a construction defect? +
No. Extent, cause, contract and technical assessment are decisive. Conspicuous cracks should still be documented.
Who pays for an expert report on the floor build up? +
This depends on dispute status and claim. Before instructing, clarify which evidence question the report should answer.
May I already have the final floor installed? +
This can cover evidence. Before installation, the condition should be documented and legally classified.
Further reading
Related construction law topics
Construction defects and warranty
Focus page on defects, cure, price reduction and securing evidence.
Construction litigation and evidence
How documents, expert evidence and litigation risk interact in a construction dispute.
Construction contract and remuneration
Focus page on contract, performance, payment and typical disputes in construction.
Topics
ScreedFloor build upCracksMoistureEvidence
Defects, a remuneration dispute, looming litigation?
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