13. CHECKLIST FOR POLY URETHANE (PU) MEMBRANE WATERPROOFING

 

13. CHECKLIST FOR POLY URETHANE (PU) MEMBRANE WATERPROOFING
Name Of Project :
Date of Checking:
Location / Structure:
Drawing / Document Reference No.
Sl. No.	Description / Activities / Items to be Checked	Status
1	Check for the safety process is followed for waterproofing activities.	OK	Not OK
2	Check for approval of work methodology of waterproofing	OK	Not OK
3	Check for approval of Waterproofing system and materials which to be used.	OK	Not OK
PRIOR TO APPLICATION
1	Check all the construction joints and surface defects of concrete is repaired as per methodology.	OK	Not OK
2	Check for filling up of tie rod holes with non-shrink cementitious grout	OK	Not OK
3	Check the primer is applied on concrete surface before application PU coating.	OK	Not OK
4	Check proper application of PU membrane & it's method of application (Roller / Brush / Spray)	OK	Not OK
5	Check proper joint at corner of the wall	OK	Not OK
DURING APPLICATION
1	Check for the RCC surface moisture content (%) before application of PU coat.	OK	Not OK
2	Check for the proper mixing of PU  before application	OK	Not OK
3	Check for the layer thickness of PU coat during and after application.	OK	Not OK
4	Check for the consumption of PU as per coverage area.	OK	Not OK
5	Check for the proper application and overlapping of roller/brush	OK	Not OK
		OK	Not OK
PROTECTION OF PU MEMBRANE
1	Check for the pull adhesion strength of PU (if required)	OK	Not OK
2	Check laying of geo textile on PU surface before laying of screed concrete.	OK	Not OK
3	Check for the thickness of the screed concrete as per specification.	OK	Not OK
4	Check and ensure no damages of PU membrane during application of screeding.	OK	Not OK
5	Check application of primer & sprinkling of sand for bonding with plaster for protection of vertical surface of PU membrane.	OK	Not OK
6	Check thickness of plaster layer for protection of vertical surface.	OK	Not OK
Remark: