Kaohsiung Fengshan Old Building Exterior Renovation | Match Your Condition First

Fengshan is one of the most densely packed old-building districts in all of Kaohsiung — exterior wall deterioration is especially concentrated here. Intense UV × afternoon downpours × densely packed aging buildings × urban traffic dust — four forces hitting simultaneously. Without targeted treatment, even a fresh renovation will fail within three years.

Match Your Building's Problem First

4 Mandatory Inspections Before Any Work Begins

Skip these and problems will reappear after renovation — guaranteed.

1. Exterior wall condition assessment — What is the tile hollow rate? Is cement mortar crumbling or powdering? Is existing paint peeling or bubbling across large areas?
2. Crack classification — Hairline cracks: coating can handle. Deep cracks: V-groove + resin fill required. Diagonal or beam/column cracks: possible structural issue needing separate assessment. Exposed rebar: rust removal must come before any repair.
3. Moisture content reading — Fengshan's frequent afternoon downpours keep moisture levels high. Over 8–12% means all coatings will bubble. Must be confirmed before work begins.
4. Water ingress source mapping — Most common in Fengshan: window frame corners, balcony slab joints, aged iron window silicone, A/C pipe penetrations, and old rain shield screw holes.

5 Methods Compared — Find the Right Fit for Your Building

A｜High-Durability Elastic Coating

Best cost-performance ratio. Best for: cement walls, heavy cracking, surface powdering Fengshan's intense sun makes UV resistance and crack-following ability the core strengths of this method ✔ UV-resistant ✔ Absorbs hairline crack movement ✔ Good waterproofing ✔ Reasonable cost ⚠ Moist substrate will cause bubbling — deep cracks need V-groove resin fill first

B｜Mineral Coating / Silicate Coating

First choice for walls where moisture keeps returning and repeated repainting has failed Breathable system lets moisture disperse outward — eliminates bubbling at the root cause ✔ No bubbling ✔ No powdering ✔ UV-resistant ✔ Long service life ⚠ Higher material cost — strict substrate preparation required

C｜Stone-Texture Coating

Strongest visual transformation — simultaneously addresses Fengshan's heavy dust pollution Granite-like appearance with strong anti-pollution performance — ideal for road-facing, exhaust-heavy facades ✔ Anti-pollution ✔ Acid rain resistant ✔ Fade-resistant ✔ Significant appearance upgrade ⚠ Mid-to-high cost — requires experienced crew

D｜Full Tile Removal + Re-tiling

Required when hollow rate exceeds 10–15% or tiles are already falling Fengshan's high temperatures intensify tile expansion and hollow failure. Mandatory method: elastic mortar + mechanical anchor bolts (dual-fix system) ⚠ Patching tiles without anchor bolts means they will fall again

E｜Dry-Cladding System (Most Durable + Strongest Insulation)

Simultaneously solves Fengshan's two biggest problems: UV cracking and indoor heat Materials: fiber cement board, aluminum panels, metal honeycomb panels ✔ 20+ year lifespan ✔ Ventilation gap provides strong thermal insulation ✔ Moisture-proof and crack-proof ⚠ Highest upfront cost — edge detailing requires a specialist crew

Standard 11-Step Construction Process

1.  Scaffolding setup + safety measures

2.  High-pressure cleaning at 150+ bar (removes dirt, loose coating)

3.  Hollow tile inspection → removal → mortar patching

4.  V-groove crack cutting + resin injection fill

5.  Exposed rebar: rust removal + anti-rust coating

6.  Deep-penetrating primer coat (improves adhesion)

7.  Full-surface fiberglass mesh reinforcement (mandatory for old buildings)

8.  Main coating in 2–3 layers (elastic / mineral coating)

9.  Anti-pollution transparent topcoat (strongly recommended for Fengshan's dusty environment)

10. Window frame, rain shield, and pipe edge sealing (silicone + cover strip)

11. Post-completion water-spray leak test (photo/video documentation required)

2026 Fengshan Pricing Reference

Copy & Send This to Any Contractor When Requesting a Quote

I need an exterior wall renovation quote for an old building in Fengshan, Kaohsiung. Please provide:

1. On-site inspection report: hollow tile rate, crack classification, moisture content
2. Recommended method (coating / tile / cladding) with reasoning
3. Construction sequence and material specifications
4. Itemized quote: scaffolding / substrate repair / coating / edge sealing / debris removal
5. Warranty terms: water ingress, coating integrity, adhesion — years covered for each
6. Fengshan area project references (with photos)
7. Post-completion water-spray test record (photo or video required)

When requesting a quote, please provide first: floor area, current condition photos, and project location.