Why HDB toilet door frames rot, and how to stop it

If you live in an HDB flat that's more than ten years old, look at the bottom of your toilet door frame. There's a good chance the timber there is darker, swollen or flaking. It's the most common door problem we see in Singapore.

Why it happens

Timber soaks up water fastest through its end grain, the cut face at the very bottom of the frame. That end grain sits directly on a floor that is wet every day. When the original varnish and silicone wear away, water wicks up into the frame. The timber swells, the finish cracks, more water gets in, and rot follows.

Warning signs

• Dark staining at the base of the frame
• Varnish lifting or flaking
• The frame feels soft when pressed with a fingernail
• Gaps opening between the frame and the tiles
• A musty smell near the door

How to slow it down

• Squeegee or wipe standing water away from the door after showers.
• Keep the silicone bead between frame and floor intact; replace it when it peels.
• Don't let mops sit against the frame.
• Touch up worn varnish at the base before bare timber shows.

When to repair

Once the timber is soft, the rot will keep spreading upward. Repairing early means a shorter section to rebuild and a lower price. See toilet door frame repair.