Step-by-Step DIY Waterproofing Guide: Essential Materials, Tools, and Procedures for Effective Home Leak Prevention and Protection

Materials

Waterproof coating (recommended flexible waterproofing for good elasticity), non-woven fabric, roller, brush, masking tape, gloves, mask

Tools

Scraper, tape measure, level (for leveling)

Site Preparation

Thoroughly clean the construction area and repair any cracks or uneven spots on the ground and walls with cement mortar.

  1. Base Treatment: Use a broom and vacuum to remove all dust and debris. Dry any wet areas completely. This step is critical for waterproofing effectiveness.
  2. Apply Masking Tape: Place masking tape along corners and pipe edges to prevent coating from spreading. It removes easily later for a clean finish.
  3. Apply First Coat: Use a brush for corners and pipe roots, then a roller for large areas. Apply thinly to avoid sagging. Allow to dry for 4-6 hours.
  4. Lay Non-Woven Fabric: While the coating is still tacky, lay non-woven fabric and press with a roller to ensure full adhesion, enhancing waterproofing.
  5. Apply Second Coat: After the first coat is completely dry, apply the second coat in a perpendicular direction. Maintain a thickness of 1.5-2mm.
  6. Water Test: After full curing (usually 48 hours), block drains and fill with 5-10cm of water. Check for leaks in the area below. Ensure adequate testing time.

Important Don’ts

  • Avoid waterproofing on rainy days, as high humidity slows drying and can cause peeling.
  • Do not skip base treatment; improper cleaning may require rework.
  • Do not shorten the water test time; insufficient testing could lead to leaks.

Save this guide! DIY waterproofing is simpler than expected and helps save money for other needs.