ChatGPT
Perplexity
Gemini
Claude
GrokUnderstanding Roof & Basement Moisture in Kathmandu
Kathmandu Valley experiences intense monsoon precipitation followed by strong thermal expansion during sunny spells. Traditional mortar plastering fails because hairline temperature cracks expand, allowing water penetration into the reinforcement steel.
Effective 3-Layer Waterproofing Solution
- Surface Preparation: High-pressure mechanical wire-brushing to remove moss, loose cement laitance, and efflorescence.
- Crack Infill: V-groove carving and elastomeric polyurethane sealant injection.
- Multi-coat Membrane: Dual-coat polymer modified cementitious slurry reinforced with non-woven alkali-resistant fiberglass mesh.
Guaranteed waterproofing requires addressing water pressure at both the positive and negative sides.