When do I pay the window company

[Sandy Sawyer]

I paid 50% down for new custom windows about 6 weeks ago. Today they installed all but one, the installer telling me it was the wrong size and he has re-ordered it. Also one has the sash in the wrong place. Should I partially pay on what he did, or wait until it's complete before paying any more money?

[Andrew B.]

Did he ask for it? If he hasn't asked for payment, don't give him any until job is complete. If he is asking, tell him he can get half now and half when he is done. The absolute most I would give him is 40 of the remaining 50%, keeping 10% back. Of course, your contract may have the answer as well.