• I used Colin's for a window and door. Couldn't find anyone to get close on price and 18 months later I remain happy with the quality. I am definitely not the most demanding customer in this thread, so that may not be the most convincing recommendation, but I certainly have nothing to fault throughout the process.

    You can see them both in this post: https://www.lfgss.com/comments/16559074/

  • Ah, it's not a sash window - it's just an aluminium top opening that you can see in the pic by the door. Can dig out that price but it won't be relevant to sash costings....

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