Waterproofing: systems, warning signs and warranties
Waterproofing systems providers list, warning signs of a bad contractor, and the advice to ask for a written warranty.
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Systems and testing
Providers list common systems such as torch-on membranes and cementitious coatings, and one KL provider describes a 24-48 hour ponding test to check the finished work.
Warning signs to watch for
According to a Malaysian contractor guide, red flags include a quote by phone without a site inspection; per-point pricing where the count grows during the work; no SSM or CIDB registration; a refusal to put the warranty in writing; cash-only payment; and large upfront deposits.
Ask for a written warranty
According to a Malaysian contractor guide, ask for a written workmanship warranty that states the coverage period and remedies.
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Dikemas kini 4 Okt 2026