When you have a joint in drywall work where there is maybe a 1/4 to 1/2 inch
gap between the two pieces due to vertical changes...(not the whole length
of the joint)...do you simply continue the tapering ( fiber tape) or should
you fill the open areas of the joint with mud first before you tape it ?
WOW! Quite a gap! If the gap is absolutely necessary I would fill it in
first with setting type mud before taping otherwise you will have an ugly
ripple over the gap and a soft spot. This is not good.
Prefill the problem areas and let them set up (at least partially)
before taping. Depending on the mud and your technique, you'll find that
the mud may sag or bulge when you try to fill significant gaps. If
you're prefilling it's a simple matter to scrape the excess off before
you apply the tape. It's not so easy to fix if the tape's already embedded.
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