A friend wants to break through an opening between two rooms but wants
to fit a pair of doors to ensure privacy when necessary.
The link below claims to provide between 35 and 41 dB reduction for
I don't know the cost of those doors but I expect them to be rather
Any suggestions for a suitable construction?
My own suggestion would be for a pair of fire-check doors, well fitted,
rebated in the middle and fitted with rubber seals all round.
What is the sound reduction one would expect from the above or any
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