What an Interior Warranty Actually Covers
Interior firms advertise warranties in years. What they rarely explain is that the number covers three different things, owned by three different parties, with three different sets of exclusions — and the layer most likely to fail is the one with the shortest cover.
Three warranties, not one
When a quotation promises a warranty, unpick which of these it means, because they are not interchangeable.
1. Manufacturer hardware warranty
Hinges, drawer channels, lift-up fittings and sliding systems are warranted by their maker — Hettich, Blum, Häfele and others each publish terms per product series, and the terms differ between an entry series and a premium one. This is a warranty you hold, not your contractor, and it is claimed against proof of what was installed. Which series you got is therefore not a detail: it decides the cover. Our hardware guide covers how the series differ.
2. Board, laminate and surface warranty
Plywood, HDHMR, MDF, laminates and acrylic finishes carry manufacturer warranties against defined defects — delamination, borer, manufacturing faults — usually conditional on the board being used in the application it was graded for. A BWR board used under a sink is outside its intended application, and that is a common reason a claim fails. The board grade comparison explains which grade belongs where.
3. Contractor workmanship warranty
This is the layer that matters most in the first two years and the one least often written down. It covers execution rather than materials: shutters that sag out of alignment, a carcase that was not levelled, edge banding lifting, a countertop joint opening, a unit pulling away from the wall. No manufacturer covers any of that, because nothing was defective when it left the factory.
Ask for the workmanship warranty explicitly, in the agreement, with a stated duration and a stated response time. A firm confident in its installation will give you one.
What is excluded almost everywhere
- Water ingress and standing water. A leaking sink trap that swells a carcase over months is treated as a maintenance failure, not a material defect — even on a BWP board, if the water was continuous.
- Site-condition damage. Seepage through an external wall, slab leaks from the flat above, or a balcony that drains inward. Real problems, but not the interior contractor's material defect.
- Misuse and overloading. Loft storage loaded past its design, a drawer used as a step.
- Natural variation. Grain, shade and figure in veneer and stone are not defects. Get this stated before installation if you have strong expectations.
- Consumables and adjustment. Routine tightening, realignment and lubrication are maintenance, not warranty. Ask what a paid service visit costs after the warranty period, so you know before you need it.
What Hyderabad specifically does to each layer
Local conditions decide which warranty you end up using:
- Hard water is the recurring complaint on fittings and glass. Scaling on taps, shower fittings and glass partitions is a water-quality issue, not a manufacturing defect, and it will not be covered. It is worth solving upstream rather than arguing downstream.
- Summer heat works on surfaces and adhesives, particularly on west-facing elevations and on anything behind glass. Bubbling or lifting where a panel bakes daily is often argued as an application issue rather than a defect.
- Dust is the quiet one. Fine construction and road dust migrates into drawer channels and soft-close mechanisms, and a mechanism that stiffens from dust is a cleaning matter. In areas with active construction around the tower this is a maintenance rhythm, not a one-off.
None of these make a warranty worthless. They just mean the failures you are most likely to see in Hyderabad sit in the excluded column, which is a good reason to specify well up front rather than rely on cover later.
How to keep a warranty enforceable
- Get the material schedule as a document, naming board grades, laminate brands, and hardware brand and series, unit by unit.
- Keep the GST invoice and delivery challans. A claim needs to show what was supplied and when.
- Photograph the installation, including hardware stamped with its brand, before shutters and covers go on.
- Get the workmanship warranty and response time into the agreement, not into a conversation.
- Ask who to contact for each layer. For hardware it may be the manufacturer's service network directly; knowing that in advance saves a month of being routed in circles.
The honest summary
A long advertised warranty on an unnamed hardware series is worth less than a modest one on a named series with invoices in your file. Specificity is the warranty. Everything else is a number on a brochure.
Written by Pradeep Kumar Vasadi
Pradeep Kumar Vasadi is a co-founder and Principal at AlcorOne Solutions. He grew up in Rajamahendravaram and spent years on the factory floors of Chennai’s manufacturing setups — hard, hands-on work that lit his drive to build something of his own. He now leads project delivery, on-site supervision, and vendor coordination, holding AlcorOne’s fit-outs to shop-floor standards of precision across South India.
Sources & references.
Standards, regulatory registries, and manufacturer references that back the material grades, pricing framework, and compliance points in this guide:
Frequently asked questions.
A firm advertises a 10-year warranty. Is that real?
It is real for whatever it actually covers, which is the question to ask. Get it in writing, layer by layer: which years apply to hardware, which to boards and surfaces, and which to the firm's own workmanship. The workmanship number is usually the shortest and the most useful.
Who do I call when a hinge fails — the contractor or the manufacturer?
Start with whoever your agreement names, but know that hardware cover is a manufacturer warranty and can often be claimed through their service network with your invoice and product identification. Ask for both contacts at handover rather than when something breaks.
My kitchen carcase swelled near the sink. Is that covered?
It depends on the cause and the board. A manufacturing defect in a board used in its intended application is a claim. Continuous water from a leaking trap over weeks is generally treated as a maintenance failure and excluded, whatever the grade. This is why BWP grade belongs under wet areas from the start.
Is scaling from hard water covered?
No. Water quality is not a product defect, and scaling on taps, fittings and glass is excluded almost universally. Treating the water is the fix; a warranty claim will not be.
Does warranty transfer if I sell the flat?
Manufacturer warranties often attach to the product and the invoice rather than the person, but terms vary by manufacturer and by series. If resale is a real possibility, ask before installation and keep the paperwork together in one place.
Ask us for the material schedule with every board grade and hardware series named, along with invoices and the workmanship warranty in the agreement. That combination is what turns a warranty from a brochure claim into something you can actually use.
Want the warranty terms in writing?
Ask for the material schedule with brands and series named, plus invoices. That is what makes a warranty claimable rather than notional.
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