Introduction Roller-applied base coats are thin plaster coats spread with a roller to help flatten and level a wall before the final skim. This approach is done after the substrate is prepped and dampened as needed. It gives you a smoother starting surface, but it isn’t a substitute for proper substrate prep or final finishing. […]

Introduction Blisters in plaster happen when moisture is trapped behind the skim coat, causing bubbles. Before you re-skim, the goal is to dry out the area and reattach loose material. Check the plaster surface for loose edges and follow manufacturer instructions or local rules for drying. Give the area plenty of ventilation and use gentle

Introduction Reinforcement for plaster returns at deep windows means adding solid edge support so the plaster won’t bulge. In practice you build up a stable, tight edge before the final coat. This keeps the plaster flush and reduces cracking. Use appropriate edging, furring, or metal lath as directed on the product label and by the

Introduction Microcement over old plaster means applying a thin cement-based coating on top of a plaster substrate with careful surface prep. Start by cleaning the surface and repairing obvious flaws to give the new layer something to grip. Roughen or abrade slightly and use an appropriate bonding primer to improve adhesion. Movement risk comes from

Introduction Keene’s cement plaster is a lime-based plaster mix that hardens to a solid wall finish. Hardness in this plaster helps durability, but it can cause cracks if it’s applied or cured improperly. To avoid crazing, follow proper mixing, priming, and curing practices and check product instructions for recommended working times and environmental limits. If

Introduction Repairing plaster medallions and ornament means recreating missing decorative detail on a plaster ceiling or wall. It starts with shaping a patch of material to mimic the curve and edge you see around the piece, then pressing it in to blend with the surrounding plaster. Take your cues from the existing profile and work

Introduction Dusting after cure is when the top layer of clay plaster flakes into fine dust as it dries. This can happen if the mix wasn’t compacted enough or if too much water was used. It often shows up as a chalky surface that can rub away with a finger. To fix or prevent it,

Introduction Clay plaster over plywood is a traditional finish that you apply to plywood walls, using joints and mesh to control movement and cracks. This article gives practical, hands-on steps for choosing joint spacing, mesh types, and tricks to reduce cracking. Expect a process that favors small batches, careful bonding, and testing along the way.

Introduction Clay plaster sealer tests help you predict how much darkening a sealer will cause before you coat the whole wall. They’re simple spot tests that you can do on small patches to see how the finish will look. Look for changes in color as the sealer dries and note how long it takes. Use

Introduction Clay plaster basics are simple, old-fashioned wall coverings made from clay, sand, and water that you mix and trowel onto a surface. This article gives a practical, hands-on look at mixing, applying, and why cracks happen. You’ll learn how to handle the mix and what to watch for on site. Expect a straightforward, honest