Nova wrote:
Bill wrote:



Ah, that Durabond 90 seems to be good stuff! sigh...

I've used it as a "prefill" in gaps that are as wide as 1/2", in many
cases shaving the side of the drywall at a slight angle to encourage
the compound to stay put forever.

The main question I have now concerns whether using Durabond as a
prefill has given me sufficient strength. I'm trying to decide whether
to tape with Durabond on top of my prefill, or to tape with an
alternate (more sandable) setting compound. Are there some rules of
thumb I can use to help me decide?

Use the regular joint compound to finish the seam. Your sanding arm will
appreciate it.


The most critical locations are probably those around some of my
electrical boxes. I assume to use up to 4 pieces of tape bounding the
box, overlapped at the corners. Would you consider using 4 pieces
anyway, for symmetry, even if you only filled one to three sides?

I only tape the side with the gap but feather out the mud across the
box.

That sounds like a very good idea.

Once dry "block sand" to insure a flat surface for the cover to sit
properly.

That sounds like a another very good idea!

Thanks!
Bill

BTW, I don't have any regrets at all about plugging the screw holes in
my electrical boxes with screws to protect the holes while I spackled
Durabond 90 near them!