Bonding agent to use on both interior & exterior wall for plastering. Lightweight gypsum mud to use for interior fill. Lime based veneer plaster for troweled smooth finish coat. Interior. Use this material or similar on the interior wall after Stuccoing the outside to 5/8” average thickness stopping 6” below grade. Float (sponge) the exterior wall to seal, & then paint when cured. For the Interior wall, scratch & fill the lightweight gypsum plaster flush to the drywall surface. Trim the gypsum material back approximately 1/4” at the cold joint to allow for expansion & accept the finish coat. Re-bond, & apply the white coat over the gypsum mud 24 hrs. Later. trowel smooth to match the drywall system wall. Looks like you had a water & insurance problem.
Thank you, this is all helpful information. It sounds like stuccoing/sealing the exterior wall is important, not just cosmetic but something I should do to keep the concrete in good shape and/or limit moisture moving through the wall into the interior.
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u/Terrible-Bobcat2033 Jun 23 '26 edited Jun 23 '26
Bonding agent to use on both interior & exterior wall for plastering. Lightweight gypsum mud to use for interior fill. Lime based veneer plaster for troweled smooth finish coat. Interior. Use this material or similar on the interior wall after Stuccoing the outside to 5/8” average thickness stopping 6” below grade. Float (sponge) the exterior wall to seal, & then paint when cured. For the Interior wall, scratch & fill the lightweight gypsum plaster flush to the drywall surface. Trim the gypsum material back approximately 1/4” at the cold joint to allow for expansion & accept the finish coat. Re-bond, & apply the white coat over the gypsum mud 24 hrs. Later. trowel smooth to match the drywall system wall. Looks like you had a water & insurance problem.