EXTERNAL WALL WATERPROOFING
External Wall Waterproofing: the Government Says 'Hire a Professional' — That's Us
Quick answer
External wall waterproofing covers elastomeric coatings, crack repair, and sealing joints around windows and wall sections, usually requiring scaffolding or a gondola. Rain ingress through external walls is normally not a case the Joint Office can act on — the government's own guidance is for Owners' Corporations to hire building professionals directly. Note: external walls are common property, so whole-facade jobs generally go through an Owners' Corporation or property-management tender rather than an online booking. We focus on small, single-flat-scope work (one wall section, window surrounds, balcony upstands) and can refer larger tender-scale projects.
Common property and the Deed of Mutual Covenant
External walls are common property, so altering or repairing them generally requires Owners' Corporation consent (or whatever body the Deed of Mutual Covenant designates), and larger projects go through a tender process. That's the key difference from roof or bathroom work, which sits inside a single owner's title — we confirm before quoting which scope is yours to authorise and which needs corporation approval.
Pricing
| Item | Reference price | Note |
|---|---|---|
| External wall / window-frame crack repair | from HK$15,000 (labour and materials, scaffolding extra) | Published operator rate, single-flat scope |
| External wall waterproofing (labour and materials) | from HK$12,000 / 2m² | Published operator rate — reflects how access costs (scaffolding/gondola) dominate small-scope pricing |
Scaffolding and gondola access costs are not included in the base prices above. Actual quotes depend on building height and method of access — we always inspect on-site before quoting.
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Frequently asked questions
Can the Joint Office handle external-wall seepage?
Rain ingress through an external wall is normally outside the Joint Office's scope — the government's own guidance is for the Owners' Corporation to hire building professionals directly.
My flat has an external-wall leak — can I just book you directly?
It depends on scope. If it's a small section within your own flat's title (like a window-frame joint), we can usually book directly. If it involves a wider section of common-property facade, it needs to go through an Owners' Corporation or property-management tender — we can help assess and refer where needed.
Why is scaffolding always billed separately for external-wall work?
Reaching the work face on an external wall usually needs scaffolding or a gondola, and that access cost is tied directly to building height and method — it's too variable to fold into a single headline price, so the market convention is to itemise it separately.