DPC materials should ideally be flexible, where differential

dpc-materials-should-ideally-be-flexible-where-differential

DPC materials should ideally be flexible, where differential thermal movements occur.

A. True

B. False

The question was asked in an international level competition.

My question is from Damp Proofing topic in division Building Construction of Basic Civil Engineering

The correct choice is A. True

To explain I would say: Although semi rigid and rigid materials can be used, flexible materials are the best. These do not tend to crack or puncture under differential thermal movements, between the material of roof and parapet.