Paint bubbles when water or vapour pushes out from behind the film, so a blister tells you the wall has a water source you need to stop before any repaint will hold. In Singapore homes that source is one of five: rain through the external...
Elastomeric paint is a high-build acrylic exterior coating that stretches with your wall. It covers static hairline cracks under about 0.3 mm, but only once the film reaches its rated thickness: 140 microns for Nippon's WeatherBond Flex, about 340 microns for Sika's full-durability spec. Cracks...
Waterproof paint sheds rain off a sound vertical wall. It's an elastic exterior coating about 0.1 to 0.2 mm thick. A waterproofing membrane is a continuous barrier 0.6 mm or thicker that holds back standing water, water pressure and crack movement, which is why flat...
You can paint over waterproofing once two clocks have run out: the membrane's cure time on its technical data sheet, and the time your wall needs to dry below the primer's moisture limit, which is 18% or lower on a Protimeter for Nippon Paint's 500...
The signs bathroom waterproofing has failed appear in a predictable order, months before anything drips. Catching it at the first sign is a resealing job. Catching it at the last means a 25% share of a repair bill under HDB's Goodwill Repair Assistance scheme, a...
