379. Set-off.

The parties to a building contract, as with any other contract, may agree by the words of their contract to preclude a party to it from exercising his rights of set-off and counterclaim1, but there is no general principle that an architect's certificate must be honoured in full without the right to exercise the power to set off and counterclaim or to apply for a stay of proceedings pending recourse to arbitration where there is an arbitration clause2. A set-off proper should be distinguished from the right to have the price abated by reason of a breach of contract