DIY tools & materials
Guides in this topic, paired with courses and open dates so you can move from reading to hands-on learning.
Tech leak tracing instruments: thermal, moisture meter, endoscope
Thermal cameras, moisture meters and endoscopes are the three common tools: what each shows, how they work together, and whether owners should buy them.
Concrete Repair and Spalling Basics
Spalling often ties to corroding rebar and moisture—assess safety before repair and waterproofing.
Efflorescence: Causes and Cleaning Direction
Efflorescence is salt crystallising with water—clean the surface, then stop the moisture path.
Waterproof Membranes and Liquid-Applied Systems
Sheet and liquid membranes cover roofs and floors—detailing at edges decides success.
PU Grouting Basics for Crack Injection
Polyurethane grouting is common for crack sealing—assess crack type and water pressure; not casual DIY.
Crystalline Waterproofing: Principles and Suitable Uses
Water-borne crystalline systems penetrate concrete and block pores—substrate and craft matter; not universal.
DIY Tools and Materials: Sealant, Filler and Caulking Gun Buying Guide
How to choose silicone, antimould sealant, fillers and caulking tools for Hong Kong bathrooms, windowsills and kitchens—and avoid mismatched materials.
Waterproofing Materials Basics: PU, Cementitious and Membrane Comparison
Compare common waterproofing materials used in Hong Kong—polyurethane, cement-based coats and sheet membranes—and when each fits roofs, bathrooms or balconies.