This video shows how to install the resilient channel to the ceiling.
It sound like the tutorial is saying (a video link with a time stamp)
because we're installing the
rest channel by half an inch, so you want
to make sure that you lower all your
device boxes about half an inch
Does "by half an inch" mean the height between the bottom of the resilient channel and the ceiling joist is equal to half an inch?
The distance between the top plane and bottom plane of a resilient channel should be determined by the manufaturer, rather than the builder, right?
The cited talking gives me a feeling that the distance is determined by the builder, which confuses me.
Any ideas?
Best Answer
The video narrator misused the term, it has no proper english meaning the way he used it.
You are correct in that the depth of the channel itself is only determined by the choice of channel, but an installer could shim a channel to make it drop lower than the manufactured dimension (depth).
It would have been more appropriate had the narrator said something like "we are installing our channel directly to the ceiling joists with no shims or furring strips, and this channel is 1/2", so the electrical boxes should be mounted to accomodate the lower ceiling..."