Warranties on Renovation Work: What They Cover

A renovation warranty covers the quality of the work done, yet its limits are often poorly defined. We explain the difference between workmanship and material warranties, exclusions and how to claim.

Ask “do you give a warranty?” and almost every contractor says yes. But that answer tells you very little. Which work does it cover, when does it stop applying, and who fixes a defect, how and within what time? When the answers are not in writing, the warranty turns into a dispute the moment a problem appears.

Workmanship warranty and material warranty

Two different kinds of warranty often get mixed up in renovation. A workmanship warranty is the contractor’s obligation: responsibility for installation and finishing work having been carried out correctly. A material and equipment warranty comes from the manufacturer or seller: it covers the mixer tap, boiler, laminate or window profile itself being free from defects.

In practice the difference looks like this. If a tile comes loose because the adhesive was applied incorrectly, that falls under the workmanship warranty. If the tile surface has a manufacturing defect, it is a material issue. If a tap leaks, the cause may be a poorly tightened connection or a faulty cartridge inside the mixer, and responsibility differs in each case.

If the contractor bought the materials, the process is simpler for the client: one party to contact, and the contractor deals with the supplier if needed. If the client bought them, keeping the manuals, receipts and warranty cards is the client’s own job.

These documents are more than paperwork. Equipment manuals state installation conditions and maintenance requirements; for some boilers or water heaters, for example, the manufacturer’s warranty may depend on regular servicing. If these requirements are not followed, warranty rights may be lost, so manuals should be kept somewhere accessible after the renovation too.

What a warranty usually covers

A workmanship warranty covers defects caused by incorrect methods. Typical examples:

• tiles coming loose or cracking, or grout failing;
• plaster and skim coat blistering, flaking or cracking for technical reasons;
• leaks at pipe joints;
• electrical connections overheating or failing;
• flooring lifting, doors warping, or noises caused by installation errors;
• damp resulting from waterproofing that does not work.

The length of the warranty depends on the type of work and the agreement. It should be stated clearly in the contract, taking account of the applicable legal requirements.

Common exclusions

A warranty does not cover natural wear or improper use. Typical exclusions are:

• mechanical damage: a heavy object dropped, a floor scratched while moving furniture;
• misuse: standing water on laminate, doors forced open;
• later interference by the client or third parties;
• external factors such as structural movement of the building or water from a neighbouring flat;
• characteristic properties of natural materials: timber changing size slightly with humidity, colour variation in natural stone.

There is a subtle point here: fine hairline cracks in some materials can be normal early on – during settlement of a new building, for example. Whether that is a warranty case is decided by looking at the technical cause, and agreeing this approach in the contract upfront reduces disputes.

Care instructions are linked to the warranty too. At handover it helps if the contractor gives the client short care guidance: which products to use on natural stone, what humidity conditions a timber floor needs, when silicone joints should be checked. This both extends the life of the materials and reduces disputes about “improper use”.

What the contract should state

The warranty section should be more than one sentence. It should include:

• which types of work are covered and for how long;
• when the period starts – usually the date the final handover record is signed;
• the list of exclusions;
• how a defect is reported and how quickly the contractor responds;
• when remedial work begins and who bears its cost.

What to do when a defect appears

The first step is to document it: date, photos and video if needed. Where damage could spread, such as a leak, take immediate safety measures – shut off the water or isolate the circuit. Then notify the contractor in writing with a description of the defect.

If the cause is disputed, a joint inspection makes sense. Photos and records of concealed work help a great deal here, showing how pipes were run and where the waterproofing is.

The most common mistake is having another tradesperson fix the defect. After such interference it becomes hard to establish whether the original work was at fault, and warranty rights may be lost.

Before starting work with Zaferoğlu İnşaat or any other contractor, we recommend clarifying in writing what the warranty covers and for how long. If your draft contract has a warranty clause, we can read it with you against the questions above.