A toilet door is a clear-opening problem before it is a style problem

HDB toilet doors fail at the bottom track. A bi-fold pin corrodes in alkaline floor cleaner. A trackless top-hung PD door avoids that puddle. Repair is S$180 to S$420. A new leaf in phenolic or aluminium composite is S$380 to S$900. The clear opening, 750mm versus a 900mm structural opening, decides whether a wheelchair or a pram actually fits. The job is permit-exempt unless the wall opening changes.

A wheelchair or a pram needs a clear opening, which is the gap that remains when the door is open, not the size of the hole in the wall. A 900mm structural opening with a bi-fold parked in the reveal can leave about 750mm of clear width, and sometimes less once the panel thickness and the track are counted. A swing door needs the arc as well as the width. A PD door, pocket or top-hung slide, parks out of the arc. That is why the calculator asks which type you have before it prices a repair. Measure both numbers with a tape. Write them down. A pretty new leaf that leaves 680mm is a failed job for an elderly parent.

Bottom-track bi-folds collect the runoff from alkaline floor cleaner. The guide pin and the bottom pivot sit in that chemistry every night. They seize, the door drops, and someone lifts it over the track until the top pivot bends. A trackless top-hung PD door puts the hardware above the splash. The roller and the soft-close stay dry. The trade-off is headroom and a stronger top track, because the whole leaf hangs. If the existing header is a thin aluminium frame, it may not take a heavier phenolic leaf without a new track. That is a carpentry line, not a hacking line.

Phenolic sheet is the wet-room panel. It does not swell the way a timber hollow-core door swells at the bottom 50mm. Aluminium composite is lighter and stays flat, and the edge has to be closed or the core shows. Both outlast a laminated timber door in an HDB bathroom that never quite dries. Painting a swollen door is a delay. Replacing the pin without asking why the track holds water is the same delay. Homey Furnishing Pte. Ltd. UEN 202018148K replaces the hardware or the leaf. The wall stays.

Homey Furnishing Pte. Ltd. (ACRA UEN 202018148K), 27 Mandai Estate, #06-10 Innovation Place, Singapore 729931, carries the permit-exempt portion of this work. V On Construction Pte. Ltd. (ACRA UEN 201611708H), listed on the HDB Directory of Renovation Contractors, carries any scope that needs an HDB renovation permit. Those two invoices are not interchangeable. Like-for-like door leaves and tracks do not need an HDB renovation permit. Widening a masonry opening, or cutting a household shelter wall, does. SCDF rules on the shelter are not a carpentry preference.

Spend ten minutes with a torch, your phone camera, and a tape before you buy a product or book a hack. Write down what you see. The safe checks below do not ask you to open a live wire, cut a pressurised pipe, or lean out of a window. Measure the structural width, the clear width with the door parked, and the height under the header. Note whether a bottom track exists. A 750mm clear opening is the usual planning figure people mean when they say the doorway is wide enough.

Stop at the red-flag column. Stop if the door can fall out of the header, if you need to cut masonry, or if the wall you want to pocket into is a shelter or a service shaft. The reason DIY fails is almost never a lack of effort. It is that the tool or chemical makes the next professional repair harder, or it hides a leak, a live conductor, or a deposit line until the damage is larger than S$180 to S$900.

This is the sequence a careful technician uses so you can tell a shortcut from a finished job. Tools stay in the van. Readings and photos go on the same worksheet as the price. The kit is a tape, a square, the matched pivot or roller, and if the leaf is changed, a phenolic or aluminium-composite door cut to the measured opening. The old track comes out only when the new door is top-hung.

1. Step 1. Make the area safe and confirm the symptom still matches the photos. For A toilet door is a clear-opening problem before it is a style problem, that means Stop if the door can fall out of the header, if you need to cut masonry, or if the wall you want to pocket into is a shelter or a service shaft.
2. Step 2. Measure before touching the finished surface. Measure the structural width, the clear width with the door parked, and the height under the header. Note whether a bottom track exists. A 750mm clear opening is the usual planning figure people mean when they say the doorway is wide enough.
3. Step 3. Set protection and lay out the tools that belong to this material. The kit is a tape, a square, the matched pivot or roller, and if the leaf is changed, a phenolic or aluminium-composite door cut to the measured opening. The old track comes out only when the new door is top-hung.
4. Step 4. Carry out the repair in the order the material allows. a heavier leaf is hung on a tired bottom pin, or the clear opening is lost because only the leaf was priced is the failure this order is written to avoid.
5. Step 5. Test in place. The door parks, latches, and the clear opening is written on the invoice next to the structural opening. The bottom track, if it remains, is clear of cement and cleaner sludge.
6. Step 6. Clean, label the photographs against the invoice lines, and leave the statutory openings, weep holes, access panels and labels visible.

The order matters because a heavier leaf is hung on a tired bottom pin, or the clear opening is lost because only the leaf was priced is what happens when a step is rushed. Handover is a measurement, not a handshake. The door parks, latches, and the clear opening is written on the invoice next to the structural opening. The bottom track, if it remains, is clear of cement and cleaner sludge. If the reading or the water test fails, the visit is not closed and a second line is priced before anyone leaves. Permit work, if the diagnosis has moved into hacking, waterproofing, or a new layout, stops here and is repriced through V On Construction Pte. Ltd. UEN 201611708H.

Hardware is the small band. A new leaf is the band when the panel has swollen. Widening the wall is not in these bands. Prices below are 2026 Singapore bands for the described scope. They are not a coupon and they are not a guess after an unopened door. A second trade, such as a PUB licensed plumber or an EMA licensed electrician, is named when the law requires it rather than buried inside the labour line. Compare rows by what they include. The planning-life column belongs to that row only.

2026 SGD scope bands

Brand, material and lifespan

Use the toilet door calculator before you order a leaf. Book the work on the bifold and PD door page.

Three worked jobs show how the same symptom is priced differently in a new BTO, an older resale flat, and a private condo or landed house. The totals are the lines a household actually paid, not a national average. Permit-exempt invoices are issued by Homey Furnishing Pte. Ltd. UEN 202018148K.

Case 1: 4-room BTO in Sengkang

The bi-fold pin had seized. The clear opening was already 760mm, so the leaf stayed. A new pin and a cleaned track were S$220. Two hours. The household was told the next failure means a top-hung conversion, not a third pin.

Case 2: 30-year resale flat in Ang Mo Kio

The hollow-core leaf was soft at the bottom. A phenolic leaf on a top-hung track, bottom track removed, was S$820. The structural opening stayed 860mm and the clear opening was 740mm, which was written on the invoice. No wall was cut.

Case 3: 3-bed condo in Bukit Merah

A pram would not pass a swing door that needed a full arc. A PD slide on the existing opening was S$690. The management office was notified because the by-laws ask for noisy work to be registered. The wall was not hacked.

Open the toilet door calculator, then book the bifold and PD door repair with the two measurements. Send the photos and the measurements from the ten-minute check. The reply prices the band on this page against what the photos actually show.

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