Common Door Types in Singapore and Their Locking Constraints
Singapore residences commonly feature four primary door categories: solid timber entry doors in newer condominiums, veneer fire-rated doors in HDB flats, engineered doors in resale units, and thicker solid-core wooden doors in landed homes. Each variation demands precise lock-body sizing, spindle alignment, and fire certification compliance. A fire-rated door, for instance, can only be modified within regulated tolerances to maintain its safety classification. Older flats often have offset door frames or thinner panels, limiting mortise depth. Selecting a lock designed with these constraints in mind ensures proper fitment, safe operation, and long-term structural integrity after installation.