A Guide to Door Types in Hong Kong Homes: Repair vs Replace
Doors are home components we use dozens of times daily without much thought — until something goes wrong. In Hong Kong's compact flats, doors provide privacy, meet fire safety regulations in high-rises, and must withstand relentless humidity. Understanding your door type and its failure points helps you make smarter repair decisions.
Solid Wood Doors
Found in older buildings — pre-war tong lau and mid-century walk-ups — solid wood doors use teak, meranti, or local hardwoods. They are heavy, durable, and offer excellent sound insulation. However, they are vulnerable to Hong Kong's humidity. During the wet season (March to September), wood absorbs moisture and swells, causing sticking. In winter it contracts, creating gaps. A carpenter can plane a swollen door, fill cracks, and refinish the surface for HK$800 to HK$2,000. Replace only when severely warped, split, or termite-damaged.
Hollow Core Doors
The most common interior door in post-1980s HK flats, hollow core doors have thin MDF veneer over a cardboard honeycomb core in a softwood frame. They are inexpensive and lightweight but lack durability — easily punctured by impacts, with veneer that chips in humid conditions. Water damage to the bottom edge is extremely common in bathroom doors. Minor veneer damage can be patched, but a compromised core or swollen bottom rail means replacement. A standard hollow core door costs HK$600 to HK$1,500 installed.
Fire-Rated Doors
Hong Kong's fire safety code requires fire-rated doors in specific locations: every residential entrance in buildings with common corridors, refuge floor doors, and fire compartment separations. Most unit entrance doors must achieve FD30 (30 minutes) or FD60 (60 minutes) fire resistance.
These doors have a solid mineral core, intumescent strips that expand in heat to seal gaps, and self-closing mechanisms. Their extra weight stresses hinges and frames. Common problems include worn self-closers, damaged intumescent strips, and sagging from hinge fatigue. Critically, repairs must maintain the fire rating — you cannot use standard hinges or non-rated closers. Replacement doors must include a fire resistance certificate. Budget HK$3,000 to HK$8,000 for a certified fire-rated door replacement.
Security Steel Doors
Popular in village houses and ground-floor units, steel security doors feature heavy-gauge frames, multiple locking points, and sometimes digital locks. Common issues include rust (especially in coastal areas like Sai Kung, Discovery Bay, or Cheung Chau), misalignment from building settlement, and lock failures. Surface rust can be treated with a wire brush, rust converter, and fresh paint. If the frame is severely corroded or lock mounting points are compromised, replacement is safer — typically HK$4,000 to HK$15,000 depending on specifications.
Sliding and Pocket Doors
Space-saving sliding doors are increasingly popular in renovated HK flats, used for bathrooms, kitchens, and studio partitions. Problems typically involve the track and roller system — rollers wear out, tracks collect dirt, and doors can jump off rails. Pocket doors are trickier since their mechanism is hidden inside the wall. Roller replacements cost HK$300 to HK$800, but accessing a failed pocket door mechanism can cost HK$2,000 or more in labour alone.
Maintenance Tips
- Control humidity: Use a dehumidifier in wet season to keep indoor humidity below 65%, protecting wooden doors from swelling
- Lubricate hinges: Apply silicone lubricant every six months to prevent squeaking and wear
- Test fire door closers monthly: The door should close and latch fully on its own
- Seal bathroom door bottoms: Apply waterproof sealant or aluminium trim to prevent water damage
- Fix problems early: A sticking door or loose hinge is a minor fix today but can damage the frame if ignored