Waterproofing Inspection Checklist

• Project Title

• Location
  Address

• Conducted on

  Date

• Conducted by

• INSTRUCTIONS
  
  1. Please answer "Yes", "No" or "N/A" on the questions below to verify if each item is compliant.
  2. Add Photos in "Images" and remarks in "Notes" of each question when necessarry.
  3. Add a Corrective Measure in "Action." Provide a description, assign to a member, set priority, and due date
  4. Complete the audit by providing a digital signature
  5. Share your report by exporting as PDF, Word, Excel or Web Link.
  

Records and Documentation by Consultant

• Proper supervision records by Contractor Site Supervisor

  Yes

  No

  N/A

• Testing of material according to specification (e.g. pre-packed waterproofing screed)

  Yes

  No

  N/A

• Approval of method statement by Consultant

  Yes

  No

  N/A

Material

• Use of a correct type of waterproofing system under HDB's materials list and building specification

  Yes

  No

  N/A

• Use of a mechanical mixer (two-part system for cementitious waterproofing membrane)

  Yes

  No

  N/A

Substrate Preparation

• Substrate in sound & dry condition (surface flat & even / adequate fall to outlets)

  Yes

  No

  N/A

• Pipe/floor openings fitted

  Yes

  No

  N/A

• Wall rendered flat and even

  Yes

  No

  N/A

• 45o mortar fillet to edge between floor and wall or pipes

  Yes

  No

  N/A

• No surface ponding or running water

  Yes

  No

  N/A

• Cleanliness (free of dust, & laitance)

  Yes

  No

  N/A

Waterproofing Membrane Application

• Application of 1st coat with a roller or brush (allow first coat to dry to touch)

  Yes

  No

  N/A

• Application of 2nd coat in perpendicular direction to the 1st coat

  Yes

  No

  N/A

• Corners and pipe properly coated with the aid of a brush

  Yes

  No

  N/A

• Upturn of at least 200 mm onto walls

  Yes

  No

  N/A

• Upturn of at least 50 mm onto pipes

  Yes

  No

  N/A

• Upturn onto the kerb as shown in the drawing

  Yes

  No

  N/A

• No air entrapped in the membrane

  Yes

  No

  N/A

• Kitchen/service yard outlets – coverage of 400mm radius from the centre of outlet

  Yes

  No

  N/A

• Thickness according to manufacturer’s recommendation (use wet film thickness gauge for checking film thickness of membrane when it is still wet)

  Yes

  No

  N/A

• Proper protection (after completion cordoned off the areas till protective covering or screed has been laid)

  Yes

  No

  N/A

Curing & Protective Screed

• Adequate curing between 1st & 2nd coat application<br>(subject to weather condition)

  Yes

  No

  N/A

• Application of approved pre-packed waterproof screed to protect the waterproof membrane (to be done on the following day after the curing of 2nd coat)

  Yes

  No

  N/A

• Use of mechanical mixer & water measuring gauge

  Yes

  No

  N/A

• Adequate fall towards outlets

  Yes

  No

  N/A

• Minimum screed thickness = 15mm

  Yes

  No

  N/A

• Provision of screed with rough surface

  Yes

  No

  N/A

Water test

• A minimum depth of 10mm water flooding test for 24 hours within 1 month after application of waterproofing membrane and protective screed

  Yes

  No

  N/A

• A minimum depth of 10mm water flooding test for 24 hours within 1 month before handing over inspection

  Yes

  No

  N/A

Warranty for Complete System of Waterproofing System

• The Contractor and the Specialist jointly provide warrant for a period of five (5) years

  Yes

  No

  N/A

Completion

• Contractor's Supervisor Name & Signature

  Sign

• Auditor's Name & Signature

  Sign