Finishing Gap Between Drywall and Floor Without Using Trim
Hi there, I’m remodeling my home out in Austin, where the insulation was removed to address pest and mold issues. I’m looking to put new drywall up, but I wanted to know if it was possible not to have a gap between the drywall and the floor as my preference is to not use trim on this project. The drywall was mainly removed along the exterior walls, up to the 4′ high mark, and sometimes 8′ tall sections were taken down. Most of the interior walls were left untouched, and show a gap (after removing the trim), anywhere from, none, where it touches the floor already, up to about an 1″ or more in some areas – which is about how much a gap was present before the drywall was taken down.
The existing concrete slab has been polished and will be the final floors, so no additional flooring will be added.
The drywall that I plan to use is DensArmor Plus, and is fiberglass-backed instead of paper-backed (and will be using a fiberglass mesh tape along the seams). I’m not sure if this means I won’t have wicking issues if this particular drywall were to come in direct contact with the concrete. I also don’t mind applying a waterproof sealer to the areas near the drywall (the floors were treated with a lithium silicate densifier in between grinding and polishing steps, but I don’t think this does anything for water resistance).
I don’t plan on hanging the drywall myself, and wanted an option that came as close to a standard install as possible. Some people I’ve met with have told me that they can hang the drywall so that it touches the floor, and the gap that’s leftover in between the top and bottom piece won’t be a problem. It can be tapped and mudded like normal, or they could split the difference and leave a gap in between the two sheets of drywall, as well as the floor, and joint compound can just fill in both these areas. Others have said I’ll have issues with cracking for any gap greater than 1/4″ and would plan on cutting small sections of drywall to fit the gaps.
I’m wondering what my options are to fill in the gaps in the case of the new drywall installation and the gaps with along the existing drywall. If it’s possible to just fill these with a joint compound or some joint compound/plaster mix, using the fiberglass mesh tape as something for it to initially adhere to – that would be ideal. But I wanted to check to see if I would have issues with cracking in the future based on this method.
I had also thought about pouring or pressing in concrete using some form-work to help it stay in place, with maybe some metal rods running along these lengths since these pieces would be so thin. And I wouldn’t mind the uneven appearance of this concrete throughout the house.
I should also mention that a limestone plaster will be the final coating for the walls.
Thank you in advance for your help, and my apologies for such a long explanation.
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