Renovation QA · Kitchen snagging
The hood is the part you can see. The duct above it decides whether it works.
A renovated kitchen is seven systems in one room: water, drainage, extraction, electrical, appliances, joinery and finishes. The cabinets and stone are what you inspect at handover. The ducting, waste falls, appliance connections and isolation valves are what you live with — and almost all of them disappear behind cabinetry within a day.
- Applies to
- Villas, apartments and F&B fit-outs
- Best timing
- Before ceilings close and cabinets fix
- Covers
- Extraction, drainage, appliances, joinery
- Our role
- We inspect — we never repair
- 7Systems in one room
- DuctThe most skipped check
- Under sinkHighest-risk cabinet
- Test itFill the sink, don’t trickle it
Kitchen renovation snagging Dubai
A beautiful kitchen can still be a badly built one
On handover day the cabinets are aligned, the stone looks expensive, the appliances are new and the lighting has transformed the room. None of that is evidence of a good renovation. The defects that cost real money sit behind the cabinets, under the sink, behind the dishwasher, above the false ceiling and inside the cooker-hood duct.
These are the complaints that arrive weeks or months later, once the kitchen has actually been used:
- Bad drain smell from the sink
- Slow drainage or repeated blockages
- Dishwasher water backing up
- Water inside the sink cabinet
- Cabinet bases and kickboards swelling
- Cooking smells that linger for hours
- Weak extraction despite an expensive hood
- Air blowing back through the hood
- Excessive hood noise
- Cracks around the sink or hob cut-out
- Loose or moving countertop
- Appliances that cannot be removed for service
- Isolation valves buried behind joinery
- Sockets in places an appliance now blocks
Cooker hood duct inspection
Extraction: the system nobody inspects
Owners specify the hood carefully and then let the contractor route the duct however it fits above the ceiling. That is backwards. A powerful hood connected to a poor duct is a poor extraction system, and once the ceiling closes, correcting it means opening it again.
Reduced below the manufacturer’s requirement
A duct narrowed to squeeze past ceiling services restricts airflow for the life of the kitchen. The hood still sounds powerful; it simply moves less air.
Why it matters: cooking odour, steam and grease stay in the room and settle on the cabinets.
Too many bends, or crushed flexible duct
Tight ninety-degree turns, long flexible runs, sagging sections and duct squeezed between ceiling services all add resistance. Flexible ducting pushed into whatever space exists is the classic version.
Why it matters: resistance shows up as noise and poor capture, not as an obvious fault.
Discharging into a ceiling void
Greasy, humid cooking air has to go somewhere safe. A duct that stops inside the ceiling, or is pushed into an unapproved shaft, moves the problem rather than solving it.
Why it matters: grease deposits, odour and moisture in a void nobody can clean.
Leaking connections along the run
Sections, elbows, transitions and the hood connection itself all need sealing. A perfectly routed duct with open joints still leaks cooking air above the ceiling.
Air returning through the hood
Poor duct configuration, a missing or stuck damper, or the wrong riser connection can let odour travel back into the kitchen — sometimes from a neighbour’s cooking.
Recirculating fitted where ducted was specified
Some hoods can run either way. Seeing a hood above the hob does not mean air is leaving the property. Confirm what was designed and what was actually installed and configured.
Why it matters: a recirculating hood filters and returns air. It will never clear steam like a ducted system.
Hood height above the hob follows the appliance and hob manufacturer’s instructions, not a rule of thumb: too high and capture suffers, too low and you have a clearance and heat problem. Test the hood on every speed, and listen — unusual noise often means resistance rather than power.
In a villa, the hood duct is also a roof penetration
Where the route terminates at roof level, the kitchen ventilation problem can quietly become a waterproofing problem. Check flashing, membrane condition around the opening, sealant, the cap itself, duct support and whether rainwater can enter. A hood that extracts perfectly and a roof that leaks in November is not a successful installation. Waterproofing inspection →
Apartments
Where is your hood actually connected?
Apartment kitchens usually rely on the building’s own ventilation arrangement, and a renovation should respect the approved design rather than improvise around it. Before the ceiling closes, establish the answers to these, in writing where the building requires it.
- Is this the designated kitchen extraction connection?
- Is the duct mechanically secured to it?
- Has the connection been properly sealed?
- Is there evidence of backflow at the hood?
- Is cooking air leaking into the ceiling void?
- Has the original arrangement been altered?
- Does building management require approval for that change?
- Can the duct be reached again for cleaning?
Kitchen drainage problems
Sink drainage: grease, gravity and bad geometry
A kitchen waste carries water, food residue, grease and cleaning chemicals, with nothing but fall to move it. That makes geometry more important here than anywhere else in the home, and it is decided behind a cabinet that nobody looks into again.
| Defect | What it does | What the owner reports |
|---|---|---|
| Wall outlet set too high | Waste has to climb to reach the connection | Slow drainage, standing water |
| Backfall in the waste run | Water and grease sit in the pipe | Smell, repeat blockages |
| Improvised trap arrangement | Extra joints and low points to make it fit | Gurgling, leaks under stress |
| Flexible waste hose sagging | Creates a permanent low point | Deposits, difficult cleaning |
| Double bowl sharing one waste badly | One bowl discharges into the other | Water rising in the second bowl |
| Unsupported waste pipework | Joints carry the load | Leaks appearing months later |
| Appliance waste teed in poorly | Dishwasher discharge meets resistance | Backing up, dirty water returning |
| Test properly | Fill the bowl and release it — a trickling tap will not reveal a leak that only appears under a full discharge | |
A new kitchen should not need the drain cleared every few weeks. Repeated blockages in a renovation that is months old point at the installation rather than at how the kitchen is being used.
Dishwasher drainage installation
Appliances: connected is not the same as installed
An appliance that runs on the day of handover can still be wrongly installed. Most appliance defects we record are about the hose behind it, the valve beside it, or the door in front of it.
Drain hose kinked, crushed or tangled
The commonest appliance defect in a new kitchen, and the easiest to create when pushing a machine back into its opening. Manufacturer instructions are explicit that the hose must not be kinked or squashed.
Why it matters: poor draining, dirty water returning, pump strain — blamed on the appliance for years.
Drain arrangement improvised on site
Depending on the appliance, a high loop or other approved anti-backflow arrangement is required. This is not a detail to invent behind a cabinet — it follows the installation instructions and the applicable plumbing requirements.
Valves you cannot reach
The dishwasher, the filter, the fridge water line and the sink all need a shut-off someone can actually get to. Buried behind fixed joinery, the only valve left is the apartment’s main.
Why it matters: a leaking hose becomes a flood while somebody looks for a stopcock.
Water lines crushed behind the appliance
Ice-maker and dispenser lines, and washing-machine inlet and drain hoses, get pinched when the appliance is pushed home. An unsecured washer drain hose that works loose causes serious damage.
Appliances that fit but do not work in place
A fridge set too close to a wall opens far enough to look fine and not far enough to remove the drawers. Ovens, microwaves and hobs each have ventilation and clearance requirements that cabinetry has to respect.
Doors that collide
Dishwasher against the island, oven against opposite cabinetry, corner unit against the neighbouring drawer, integrated front panels rubbing. Perfect on the drawing, unusable in the room.
Every water-connected appliance should be run, then the cabinet beside and beneath it re-inspected once the cycle or discharge is finished. Gas work is tested by a qualified technician; visual snagging still records an inaccessible isolation valve, a stressed hose or obvious installation damage. Electrical circuits and protective devices are verified by a qualified electrician.
The cabinet under the sink is the highest-risk square metre in the kitchen
Hot and cold supplies, mixer hoses, isolation valves, the sink waste, the dishwasher supply and waste, often a water filter and an electrical point — all inside one box with a door that stays shut. One weeping joint destroys the carcass before anyone opens it. Inspect it with water running, not dry.
Countertop & sink
Stone, cut-outs and the weight nobody calculated
| Element | What to check | Grade |
|---|---|---|
| Undermount sink support | Brackets and fixings, not adhesive alone, carrying a full sink of water and dishes | Critical |
| Sink and hob cut-outs | Cracks, chips, rough cutting, thin unsupported sections at corners | Critical |
| Unsupported overhang | Movement or cracking where stone projects for seating | Critical |
| Countertop level | Tilt, local unevenness, water running to the backsplash | Major |
| Stone joints | Level difference by hand, gaps, adhesive finish, colour match | Major |
| Countertop-to-backsplash junction | Open gap letting water behind the counter | Major |
| Sink perimeter seal | Continuous, clean, adhering — not filling a construction gap | Major |
| Hob seating | Level, secure, correct clearances to adjacent units | Major |
| Note | A crack at a cut-out corner is a structural observation, not a cosmetic one — it should be assessed, not polished | |
Joinery, electrical & ceiling
Everything that has to be opened, switched on or reached
Cabinetry & moisture protection
- Door and drawer alignment, viewed along the whole run
- Consistent gaps, no rubbing, soft-close working
- Wall units securely fixed, no movement or sagging
- Shelves and tall units stable under load
- Board edges sealed at sink, dishwasher and washer
- No swelling, raised edges or musty smell anywhere
- Kickboards removable where appliances need service
Electrical, lighting & ceiling
- Sockets secure, operational, sensibly placed for wet areas
- Appliance supplies reachable, plugs and cables not crushed
- Circuit labelling and isolation for each appliance
- Ceiling and pendant lights, under-cabinet strips all working
- Drivers and transformers replaceable, not sealed in
- False ceiling level, joints, staining and access panels
- Neat penetrations, no visible wiring or open gaps
An access panel is only useful if a technician can reach the thing behind it. Check size, position, obstructions and working space — and check what sits above the ceiling while it is still open: hood duct, drainage, water pipes, cabling and AC services. Any staining on a new ceiling gets investigated before it is painted over, not after.
Kitchen renovation inspection Dubai
Five stages worth inspecting
A problem that takes five minutes to correct before the ceiling closes can take a week of demolition afterwards. Stage inspection
-
1
Plumbing & drainage rough-in
Supply pipework and joints, waste outlet height, gradient, trap arrangement, appliance waste connections, isolation valve positions and pressure testing.
-
2
Extraction & electrical, before the ceiling closes
Duct route, size, bends, supports, joints, termination or riser connection, damper, plus appliance supplies, cable routes and access panel positions.
-
3
Before cabinets are fixed
Last chance to see the wall behind the run: plumbing access, appliance openings and clearances, drainage, cabling and floor penetrations.
-
4
Joinery & countertop
Cabinet alignment and fixing, countertop level and joints, sink support and seal, hob seating, cut-out condition and sealant.
-
5
Final functional inspection, then de-snagging
The whole kitchen operated and tested, then a return visit to confirm the reported items were actually rectified.
Functional testing
The final test sequence
Photographs find scratches. Using the kitchen finds defects.
- Run the cold, then the hot, checking orientation
- Watch the connections inside the cabinet while water runs
- Fill the sink and release it in one discharge
- Check the trap and every waste joint after the discharge
- Run both bowls of a double sink
- Run the dishwasher and watch it discharge
- Re-inspect under and beside the dishwasher afterwards
- Run the hood at every speed, listening for resistance
- Check for air returning through the hood
- Operate every light, including under-cabinet
- Open every door, drawer and appliance door together
- Check clearances: fridge drawers, oven door, island
- Check the floor for standing water and reachable drain
- Return to the sink cabinet last, after everything has run
Why timing decides the cost
The same defect, found at two different moments
| Defect | Typical repair | Scale |
|---|---|---|
| Misaligned cabinet door | Hinge adjustment | Minutes |
| Kinked dishwasher drain hose | Pull the appliance, re-route, refit | An hour |
| Leaking sink trap, caught early | Remake the joint | An hour |
| Leaking sink trap, caught late | Replace the water-damaged carcass | Cabinet replacement |
| Badly positioned waste outlet | Plumbing modification behind fixed joinery | Strip the run |
| Poor hood duct route | Open the ceiling, sometimes the cabinetry | Ceiling out |
| Concealed pipe leak | Open wall, repair, make good cabinets and floor | Multi-room |
| The pattern | Every critical item on this list was visible and cheap to correct at some point during the works | |
Diagnosis
Kitchen smell: drain, duct or neighbour?
Kitchen odour is the most misdiagnosed complaint we see, because three unrelated systems produce it. When it appears tells you more than what it smells like.
Points to drainage
- Worse after the sink or dishwasher discharges
- Strongest at the sink cabinet or floor drain
- Returns days after the drain is cleaned
- Comes with slow drainage or gurgling
Points to extraction
- Present when the hood is off, clears when it runs
- Arrives at cooking times that are not yours
- Accompanied by air movement at the hood
- Comes with grease or dirt marks near the ceiling
Possible causes on the drainage side include a trap problem, an unsealed appliance waste connection, an open drainage connection, backfall holding stagnant water, or a defective seal. On the extraction side: a leaking duct joint, a missing or stuck damper, or a shared riser. Masking either with cleaner or an air freshener guarantees a repeat performance.
Kitchen snagging checklist
Before you accept the kitchen
Extraction & ceiling
- Correct system installed and configured
- Duct size to the manufacturer’s requirement
- No crushed sections or unnecessary bends
- Joints sealed, duct supported
- Approved external or riser termination
- Roof penetration weatherproofed (villas)
- Works at all speeds, no backflow, no rattle
Water, waste & appliances
- Hot and cold correct, good pressure, no leaks
- Sink drains fast on a full discharge
- Trap accessible and removable
- Waste falls correct, no backfall
- Dishwasher hose unkinked and correctly arranged
- Isolation valves reachable for every appliance
- No leaks anywhere after everything has run
Joinery & stone
- Doors and drawers aligned, nothing rubbing
- No collisions between doors and appliances
- Cabinets secure, shelves sound
- No swelling at any wet location
- Countertop level, joints acceptable
- Cut-outs sound, sink properly supported
- Sealant complete at every junction
Electrical, floor & finishing
- All sockets and lights operational
- Appliance supplies accessible, cables not crushed
- Floor tiles aligned, no lippage or cracks
- Floor drain flows where provided
- No standing water beneath cabinets
- Service gaps closed, penetrations finished
- Installed work compared with the BOQ
Premium cabinets, imported stone and German appliances do not make a good kitchen. What is behind them does.
Already using the kitchen?
Warning signs worth investigating
- Slow sink drainage or gurgling
- Drain smell that returns after cleaning
- Repeated blockages in a new kitchen
- Dishwasher not draining fully
- Dirty water returning into the appliance
- Damp or water inside the sink cabinet
- Swollen kickboards or cabinet bases
- Water appearing beneath base units
- Weak extraction despite a new hood
- Cooking smells lingering for hours
- Air or odour blowing back through the hood
- Excessive hood noise or vibration
- Cracks spreading from a cut-out corner
- Countertop movement or a lifting joint
- Sockets or plugs becoming warm
- Stains appearing on the kitchen ceiling
Installed work should also be compared against the BOQ, drawings, material approvals, appliance schedule and joinery drawings. Snagging is not only about whether something works — it is about whether what you paid for was actually delivered. BOQ & quantity review
Questions owners ask
FAQs: kitchen renovation snagging in Dubai
Extraction
Why is my new cooker hood not clearing steam and smells?
Usually the duct rather than the hood: a reduced duct size, too many tight bends, a long or crushed flexible run, leaking joints, or a termination that discharges somewhere it should not. A hood can sound powerful while moving very little air.
Where should the hood duct terminate?
It depends on the property and the approved design. In villas it commonly terminates externally through a wall or roof rather than into a ceiling void. In apartments there is usually a designated kitchen ventilation connection, and the renovation should use it rather than improvise.
Can you check the duct after the ceiling is closed?
Only partially, through access panels and by testing performance. Full verification of route, bends, joints and supports needs to happen before closure — which is why that visit matters more than any other on a kitchen.
Why does cooking smell come back into my kitchen?
Possible causes include poor duct configuration, a missing or stuck backdraft damper, an incorrect riser connection, or conditions in a shared ventilation system. Noting when it happens narrows it down quickly.
Is a recirculating hood acceptable?
It can be, where that was the design and the filters are maintained. The problem is when a ducted system was specified and a recirculating configuration was installed — or when a hood is connected to a duct that goes nowhere useful.
Drainage and appliances
Why does my kitchen sink drain slowly from day one?
Common causes are a wall waste outlet set too high for gravity, backfall in the waste run, an improvised trap arrangement with low points, or a sagging flexible hose. A new kitchen should not need frequent clearing.
Why does my dishwasher not drain properly?
The drain hose is the usual suspect — kinked, crushed or tangled behind the appliance — followed by an improvised drain arrangement or a poor waste connection. Manufacturer instructions set out how the hose should be routed and connected.
What is a high loop and do I need one?
It is one form of anti-backflow arrangement for a dishwasher drain. Whether a high loop, an air gap or another arrangement applies depends on the appliance instructions and the applicable plumbing requirements — it should not be decided on site by whoever is fitting the machine.
Should isolation valves be accessible?
Yes. The sink, dishwasher, water filter and fridge line should each be isolatable without dismantling joinery. Valves buried behind fixed cabinets leave you shutting off the whole property.
Why is water appearing under my cabinets?
Possible sources include the sink waste or supply, the dishwasher, the fridge water line, a floor drainage issue, or a concealed plumbing connection. Because it is hidden, it is usually discovered through swollen kickboards or a damp smell rather than visible water.
Stone, joinery and process
Is a crack near the sink or hob cut-out serious?
It should be assessed rather than dismissed. Cut-out corners are the weakest points in a stone top, and cracking there can relate to thin sections, rough cutting or inadequate support beneath the sink.
How much countertop unevenness is acceptable?
Some tolerance is normal depending on material and installation, but obvious tilt, a joint you can feel by hand, or water collecting against the backsplash are documented as findings.
My fridge fits but the drawers will not come out. Is that a defect?
It is a design and installation issue worth recording. Appliances need working clearances, not just an opening they slot into. The same applies to doors that collide with an island or opposite cabinetry.
When should a kitchen be inspected?
Ideally at plumbing rough-in, before the ceiling closes, before cabinets are fixed, at joinery and countertop stage, and finally with everything operating. If you can fund only one visit during the works, make it the one before the ceiling closes.
Should I pay the contractor before snagging?
Follow your contract, but the controlled sequence is completion, snagging, rectification, de-snagging, then final payment. Payment verification
Do you carry out the repairs you find?
No. We inspect — we never repair, and we quote for none of the remedial work. That is what keeps the report independent.
How we can help
Kitchen renovation snagging in Dubai
What the inspection includes
- Cooker hood, duct route and termination where accessible
- Water supply, waste falls and trap arrangement
- Appliance connections, hoses and isolation
- Functional testing of sink, dishwasher and hood
- Countertop, sink support, cut-outs and sealant
- Cabinetry, clearances and moisture protection
- Electrical points, lighting, ceiling and access panels
Related reading & services
Important note
Our inspections provide technical observations based on the accessible condition of the property and the documents provided for the agreed scope. They are not design certifications, statutory approvals or contractual determinations. Duct arrangements, appliance installation, clearances and drainage should follow the manufacturer’s instructions, the project specification and applicable requirements. Gas work is tested by a competent technician and electrical circuit suitability verified by a qualified electrician; our checks are visual and functional within the agreed scope.
Inspect the kitchen before the cabinets close it up
Extraction, drainage, appliance connections, stone and joinery — tested with water and power running, documented in a numbered photographic report. We inspect — we never repair.
DED Certified · RERA Approved · InterNACHI Certified · 98,000+ Inspections
