What blocks toilet unblockings in Sham Shui Po

Excess tissue paper / wet wipes (most common)

Hair build-up at trap

Foreign objects (kid's toy, tampon, dental floss)

Partial-flush habit (insufficient water pressure to flush)

Sham Shui Po building patterns we see

1960s clay pipe corrosion + roughness traps debris

Restaurant grease leaching into shared mains over 30 years

Tile-on-tile bathroom conversions stacking debris-catching joints

Subdivided unit (劏房) extra fittings creating extra failure points

Method Manual auger probe (4m) → break up plug → hot water flush → test 60 sec for full flow.

Sham Shui Po-specific knowledge. Sham Shui Po has the highest concentration of pre-1995 walk-ups in HK. Clay pipes, narrow drain bores, decades of accumulated grease — drains here block 3-5× more often than newer districts. We've cleared 80+ Sham Shui Po jobs and know the patterns.
Service-specific method. HK toilet blocks are typically tissue, hair, or foreign objects (kid's toy, tampon, paper towel). 90% clear in 15-30 min with manual auger. Fixed HKD 350 for residential, +HKD 200 for after-hours.
Fixed price quoted on phone. No 'we'll see when we get there' surprises. From HKD 350.
7-day re-block guarantee. Same drain re-blocks within 7 days, we return free.
Receipt + tax invoice always. For tenant-landlord reimbursement or building AP.