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 contract
Defective building materials: claim against manufacturer, supplier or contractor?
Defective building materials: clarify opponent, warranty and evidence before removal.
Your law firm
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.
10 July 2026 · Mag. Bernhard Brandauer, Rechtsanwalt
When materials or components are defective, the first reaction is often that the manufacturer must pay. Legally, that is not always the correct first step.
For building owners, the first question is who owed the concrete performance, who selected the material and which promise is in the contract.
This article separates manufacturer, supplier and contractor and shows how evidence is secured before removal or replacement.
Place your situation
What is sensible now?
Answer two short questions. You receive initial orientation on which documents and reactions now matter.
Already know you want to get in touch? Go straight to the enquiry form.
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.
Review the contract chain before a demand
Review the contract chain before a demand
The building owner often has a contract with the contractor, not directly with the manufacturer. The first opponent is therefore often the contractual partner.
If the owner specified or purchased the material, the allocation may change.
Before sending a demand, clarify who owed selection, delivery, installation and warning.
Separate material defect from installation error
Separate material defect from installation error
Damage may come from the material itself or from wrong storage, processing or installation.
This distinction is central because it decides opponent and burden of proof.
Without technical review, the discussion quickly becomes mere blame.
Secure evidence before removal or replacement
Secure evidence before removal or replacement
Defective material is often removed quickly because the project must continue. That is exactly how evidence can be lost.
Photos, batch numbers, delivery notes, packaging, remaining material and installation records should be secured.
Where risk is high, an expert report before removal or a supervised opening can be sensible.
Think warranty and damages separately
Think warranty and damages separately
Warranty asks about defective performance and resulting rights such as cure or price reduction.
Damages require further review, especially cause, fault and loss.
Both levels may arise together but should be separated cleanly in the demand.
Classify guarantee and product liability carefully
Classify guarantee and product liability carefully
A manufacturer guarantee can help but does not automatically replace claims under the construction contract. Its scope is in the guarantee terms.
Product liability is a separate topic and does not fit every building material case. It should be reviewed only where a product damage in the legally relevant sense is at issue.
In practice, the contract chain is usually decisive first.
Checkpoints
Three levels of the legal review
The overview shows which questions should be checked separately.
| Level | Issue | Why it matters |
|---|---|---|
| Contractor Owes work and material use | Often first contact under contract | |
| Supplier Delivered or sold material | Relevant where owner purchased directly | |
| Manufacturer Produced material or component | Guarantee or product issue reviewed separately |
The correct claim direction depends on contract, selection and cause of the defect.
Process
Safe sequence in construction law
A short sequence helps connect technical and legal review.
- 0101
Secure material
- 0202
Review cause
- 0303
Direct claim
Practical tip: Keep remaining material, packaging and delivery notes. Without these details, a material defect is often hard to prove. Arrange an initial consultation (EUR 72)
Frequently asked questions
Defective building materials: frequent questions.
Must I contact the manufacturer first? +
Not necessarily. Often the contractual partner under the construction contract is the first opponent. The contract chain must be reviewed.
Should defective material be removed immediately? +
Only if technically necessary and the condition has been secured beforehand. Otherwise important evidence can be lost.
Does a manufacturer guarantee always help? +
It can help but does not automatically replace warranty claims. The guarantee terms and the contract are decisive.
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
Building materialsWarrantyContractorManufacturerDamages
Defects, a remuneration dispute, looming litigation?
In construction law, deadlines and evidence decide. Call us directly or send an email, callback within one business day.
Contact
A direct line to the firm.
Address
BRANDAUER Rechtsanwälte GmbH Giselakai 51 5020 Salzburg
Phone
+43 662 6280000