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does pvc expand in cold and hot conditions?

does pvc expand in cold and hot conditions
kay, January 2010
yes it does.All building materials expand and contract, but not at the same rate. For example, upvc materials expand and contract at a different rate than wooden materials.

Dazzer, January 2010
Only in hot conditions - when cold it contracts

You can sometimes hear it cracking as it moves

The coefficient of linear expansion of PVC-u is about...

0.00006 per ºC which is about 5 times that of steel and 2½ that of aluminium

Peccavi, January 2010