Kaohsiung Gushan Old Building Exterior Renovation | Match Your Condition First

Gushan has one of the most complex exterior wall deterioration environments in all of Kaohsiung. Sea wind salt damage × hillside humidity × intense sun × urban dust — four forces hitting simultaneously, none missing. Coastal air meets mountain moisture — salt never leaves, humidity never clears. Without targeted treatment, renovation won't last.

⚡ Match Your Building's Problem First

 5 Mandatory Inspections Before Any Work Begins in Gushan

Skip one of these and renovation could fail within two years.

1. Exterior wall deterioration assessment — Is tile hollow rate above 10–15%? Is cement mortar crumbling or flaking? Is existing coating delaminating across large areas?
2. Salt damage level check — Any exposed rebar, rust staining, corroded metal fixtures, softening cement, or white salt efflorescence on tile surfaces?
3. Crack classification — Hairline cracks: elastic coating can handle. Over 0.3mm: V-groove + resin fill required. Diagonal or through-cracks: possible structural issue — needs separate structural assessment.
4. Moisture content reading — Gushan's hillside location means persistent humidity. Over 12% = all coatings will bubble. Must reach 8–12% before any coating or tile substrate work begins.
5. Water ingress source mapping — Most common in Gushan old buildings: window frame corners, balcony slab joints, rain shield screw holes, pipe penetrations, and parapet wall cracks.

 5 Methods Compared — Find the Right Fit for Your Building

A｜Salt-Resistant High-Durability Elastic Coating

Best cost-performance ratio. Best for: powdering, cracking, aging cement on general old buildings Gushan mandatory upgrades: anti-salt primer + full-surface fiberglass mesh reinforcement ✔ Sea wind resistant ✔ UV resistant ✔ Flexible — absorbs crack movement ✔ Good waterproofing

B｜Silicate / Mineral Coating

First choice for walls with high moisture, chronic bubbling, or efflorescence tendency Breathable system lets moisture disperse outward — eliminates the root cause of bubbling rather than masking it ✔ No bubbling ✔ No powdering ✔ Salt-resistant ✔ Longer service life than conventional coatings ⚠ Higher material cost — strict substrate preparation required

C｜Stone-Texture Coating

Strongest visual transformation — simultaneously addresses Gushan's heavy dust pollution Stone-like appearance with strong anti-pollution performance — ideal for Gushan's high-traffic, dust-heavy street facades ✔ Anti-pollution ✔ UV-resistant, won't yellow ✔ Significant appearance upgrade ⚠ Requires experienced crew with proven salt-environment track record

D｜Full Tile Removal + Re-tiling

Required when hollow rate exceeds 15% or tiles are already falling Gushan standard method: elastic mortar + mechanical anchor bolts (dual-fix system) In a sea wind environment, traditional tile adhesive alone will fail again ✔ Durable and weather-resistant ✔ Long service life ⚠ Destructive process — higher cost and longer timeline

E｜Dry-Cladding System (Gushan's Most Durable Long-Term Solution)

Longest lifespan — simultaneously solves salt damage, humidity, and heat insulation Materials: aluminum panels, fiber cement board, honeycomb panels ✔ Fully salt-proof ✔ Ventilation gap for moisture control and thermal insulation ✔ Installs over existing wall — no demolition needed ⚠ Highest upfront cost — lowest long-term cost

 Gushan Reinforced 11-Step Construction Process

1.  Scaffolding setup + wind-reinforced anchoring

2.  High-pressure cleaning at 150 bar (removes salt, dust, loose coating)

3.  Hollow tile inspection → removal → mortar patching

4.  V-groove crack cutting + resin injection fill

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

6.  Anti-salt deep-penetrating primer coat

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

8.  Main coating applied in 2–3 layers (elastic / mineral / stone-texture)

9.  Anti-pollution transparent topcoat (essential for Gushan's dusty environment)

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

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

 2026 Gushan Pricing Reference

Due to salt damage and hillside wind exposure, Gushan quotes typically run 10–15% higher than standard urban areas — this is normal and expected.

 Copy & Send This to Any Contractor When Requesting a Quote

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

1. Current condition assessment: hollow tile rate, crack classification, moisture content, salt damage level
2. Recommended method (coating / tile / cladding) with reasoning
3. Anti-salt material specifications and application thickness
4. Construction sequence and project timeline
5. Itemized quote: scaffolding / substrate repair / coating / edge sealing / debris removal listed separately
6. Warranty terms: water ingress, adhesion failure, color fading — years covered for each
7. Gushan or coastal area project references (with photos)
8. 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.