I’m renovating a 1930s semi and I’m planning to fit Rationel windows. The Rationel distributor wasn’t keen on measuring up for the windows but has sort of agreed as a favour. He seemed a bit unsure of how to measure for the two bay windows and has said he will speak to a surveyor friend and get done tips .

My questions are:

1 . Should the distributor be responsible for measuring?

2. Should I measure for these myself?

3 . How do you measure for bay as the old double glazing is still in place but the new Rationel windows are 123mm deep with different 45 degree corner details?

I requested a small sample of the 45 degree angle profile so I could set out on floor to measure to scale but Rationel refused. Any advice appreciated as I really like these windows!

  • Alasdair Macmillan

    The installing contractor (you if doing it yourself) should always measure the sizes. You wouldn’t ask a window manufacturer to do this. Remove internal finishes as necessary to determine internal structural opening sizes, and forward these to the supplier.

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