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Kwun Tong Rooftop Waterproofing Case Reference | ~HK$25,000
| District | Kwun Tong |
|---|---|
| Floor Area | Rooftop ~400 sqft |
| Property Type | Private residential (tong lau / walk-up building, top floor) |
| Project Type | Rooftop Waterproofing |
| Reference Price | HK$25,000 |
| Price per sqft | ~HK$63 / sqft |
Assumed Scope of Work
- Removal of existing deteriorated waterproofing layer
- Crack repair and base surface treatment
- Application of new waterproofing coating (two to three layers)
- Protective layer installation
- Drain outlet clearing and inspection
- Waterproofing warranty period provided
Price Interpretation
Rooftop waterproofing commonly ranges from HK$15,000 to HK$60,000 depending on area and waterproofing material grade. This case uses HK$25,000 as a reference, using mid-grade waterproofing coating, falling in the common price range.
Factors That May Increase Cost
Premium Waterproofing Materials
Using Japanese or European brand waterproofing membranes increases material costs
Severe Leakage
Existing severe leakage requires additional repair work
Scaffolding Costs
Some locations require scaffolding for access, adding extra costs
Factors That May Reduce Cost
Partial Repair
Repairing only the leaking areas instead of redoing the entire rooftop
Simple Recoating
Using basic waterproofing paint for a refresh
Related Resources
This page is a market case reference compiled by HKHowMuch to help understand common quotation ranges and cost variation factors in Hong Kong. It is not an official contractor quotation or a verified completed project. Actual costs vary depending on scope of work, materials, building conditions, and contractor. We recommend obtaining formal quotations from at least three contractors for comparison.