What is the minimum thickness for PVC waterproofing sheets as per this code?

The minimum nominal thickness is 1.2 mm, with an allowable tolerance of ±5 percent (Clause 5.1).

What is the water penetration requirement?

The material must show no signs of water leakage when subjected to a hydrostatic pressure of 60 kPa for 24 hours (Table 2).

What is the required tensile strength for these sheets?

A minimum of 12 MPa in the longitudinal direction and 10 MPa in the transverse direction (Table 1).

Is this standard applicable for PVC sheets used in swimming pools?

Yes, it can be used for water-retaining structures, but sheets with appropriate chemical and chlorine resistance should be chosen.

IS 16071

: 2013

Polyvinyl chloride (PVC) sheets for waterproofing - Specification

CurrentFrequently UsedSpecificationBIMMaterials Science · Waterproofing and Damp Proofing

Download PDF BIS Portal Google

This standard specifies the requirements for flexible Polyvinyl Chloride (PVC) sheets intended for use in waterproofing of buildings and other civil engineering structures. It covers material composition, physical and mechanical properties, dimensions, performance criteria like water tightness, and methods for sampling and testing.

Specifies requirements for flexible polyvinyl chloride (PVC) sheets used as waterproofing membranes.

Quick Reference Values

Minimum nominal thickness1.2 mm

Tolerance on nominal thickness± 5 %

Minimum tensile strength (longitudinal)12 MPa

Minimum elongation at break (longitudinal)200 %

Water penetration test pressure60 kPa for 24 h

Low temperature flexibility test-20 °C (No cracking)

Resistance to tear (nail shank)150 N

Practical Notes

This is a material specification only; for application and installation, refer to manufacturer's guidelines and codes of practice like IS 16700.

Ensure UV-stabilized sheets are specified for exposed applications (e.g., roofs) as standard PVC can degrade under prolonged sunlight exposure.

Proper jointing using hot-air welding is critical for a leak-proof system. Seams are the most common points of failure if not executed correctly.