Measuring window openings without cavity closers

[haythorn_1]

I’m planning on using a supply only window supplier so I need to measure the openings myself.

 

The openings are completed in my brick and block walls but how the cavities will be closed up has not yet been decided. My expectation is that I will use cavity closers.

 

Can I measure the opening sizes now without any closers installed? I presume the difference they make is minimal?

[Blooda]

Ask how much it would be to send someone out to measure.   It may be not too bad, for the reassurance. 

 

[JohnMo]

34 minutes ago, haythorn_1 said:

Can I measure the opening sizes now without any closers installed? I

If you know the space a closer takes up. But as mentioned get them to measure, you are also making them take responsibility and take the risk. No idea of the window quality or cost, but generally not cheap. If they can't or will not measure, go elsewhere.

[Russell griffiths]

Go and buy the closures, do not take a punt on them not adding much, I bet they reduce the opening by 10 mm

[haythorn_1]

Thanks all. I may not user cavity closers but instead use an airtight membrane to seal it with a j bead supporting the plasterboard. In which case i imagine that will be thin enough i don’t need to factor the membrane.

 

I had looked at other suppliers that would do the measurement but the cost was considerably more so I decided that it was worth the saving to take that risk. I may use a professional company to take the measurements who would also be doing the install that the supplier recommended.