"Dave Plowman (News)" Wrote in message:
In article ,
Michael Chare wrote:
When installing plastic door frames and windows frames would you put a
concrete screw going up into the lintel?

No real need - and you want to avoid distorting the frame.

Best to lay it on a level bed, and fix to the sides. The foam etc infill
provides the strength.


How many have you fitted?
--
Jim K


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