Plaster

Plaster is for cement-based and traditional plastering projects where a smooth or durable surface is the goal.

You’ll find guides on surface prep, bonding, scratch/brown/finish coats, patching, corner details, sanding and finishing, and how to avoid common issues like cracking, poor adhesion, and uneven texture.

If your project is “make this wall look right again,” this is the category to start with.

Power drill mixing gray cement in black bucket

Mixing Gypsum Basecoat for Patches: Water Ratios, Set Control, and No-Retemper Rules

Introduction Mixing gypsum basecoat for patches means preparing a plaster-like mix by combining gypsum with water to arrive at a workable, patch-ready consistency. Follow the product label and manufacturer instructions to determine the proper water amount and mix texture. Check local rules or codes if they govern patch work or setting times in your area. […]

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Worker wearing yellow helmet applying plaster to a wall

Plaster After Flooring Changes: Baseboard Edges, Gaps, and Crack Isolation

Introduction Plaster after flooring changes is about finishing edges where the wall meets the new floor to keep things smooth and crack-free. This topic covers baseboard edges, gaps, and how plaster behaves around different floor heights. Stay practical and honest about what you can patch and what might need more follow-up. Start by inspecting the

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Man applying plaster on wall with a trowel

Heat-Resistant Plaster Finishes Near Wood Stoves: Safer Choices and Topcoats

Introduction Heat-resistant plaster finishes are durable coatings designed to survive nearby wood stoves without cracking or posing a fire risk. Choose a plaster system that is non-combustible with a solid backing and proper joints, and follow the manufacturer’s instructions for installation and curing. For topcoats, look for options labeled for high-heat areas and apply them

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Paint brush next to green color swatch cards on wooden surface

Marmorino Color Layering: Building Depth Without Blotches or Lap Marks

Introduction Marmorino Color Layering is a plaster technique that builds depth by layering pigments and lime plaster to avoid blotches. You’ll apply thin coats, blend colors wet-on-wet, and smooth to keep it even. Work in small areas and test a patch first to learn how your mix behaves. Start with a clean, damp surface and

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Worker applying plaster to wall with trowel and hawk

Venetian Plaster Over Existing Tile: Prep, Bond Bridges, and Edge Detailing

Introduction Venetian plaster over existing tile is applying plaster onto a tile surface to create a seamless, stone-like finish. Prep and bond are critical, because you’re sticking plaster to a non-porous base. You’ll need to clean, roughen, and seal as needed, then choose a compatible bonding product and follow its directions. Start with careful prep,

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Hand wiping plaster wall with gray cleaning rag

Restoring Plaster After Smoke Damage: Cleaning, Sealing, and When Skims Won’t Bond

Introduction Restoring plaster after smoke damage means cleaning soot from surfaces, sealing with an appropriate primer, and addressing spots where skim coats won’t bond. This is a hands-on job you can tackle with basic tools, but you’ll need to verify suitability with product labels and local rules. Start with a gentle cleaning method that won’t

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Hands wearing gloves applying plaster with a trowel on wall

Lime Plaster Over Foam Indoors: Mechanical Keys, Mesh, and Fire-Safety Notes

Introduction Lime plaster over foam indoors is applying a breathable lime-based coating on foam insulation or foam boards inside a building. It needs proper keys, mesh, and surface prep so the plaster grips the foam. Work slowly, check that the foam is compatible with lime, and follow local rules. Use mechanical keys and mesh to

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Worker spraying wet stucco onto wall surface

Plaster Base Coats on Metal Lath: Thickness Targets and Scratch Patterns That Hold

Introduction A plaster base coat on metal lath is the first plaster layer that bonds to the lath and creates a solid surface. Apply it over clean, prepared metal lath and follow the guidance on the product label or manufacturer instructions. Keep the mix at a workable consistency and follow any local rules or instructions

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Person applying plaster to wall with trowel and hawk

Plaster Timing vs Indoor Humidity: Avoiding Flashing, Soft Spots, and Patch Ghosting

Introduction Plaster timing vs indoor humidity is about when to plaster based on how damp the air and surfaces are. Doing it at the wrong moment can lead to flashing, soft spots, or patch ghosting that shows later. Check the product label and manufacturer instructions for open time and cure expectations, and adjust with airflow

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Gloved hand holding a metal trowel against a plaster wall

Hollow-Sounding Plaster Walls: Tap Maps, Key Failure Patterns, and Targeted Stabilization

Introduction Hollow-sounding plaster walls hide voids behind the plaster, so tapping sounds hollow. This usually means the lath or backing has failed or separated from the surface. Understanding this helps you map where stabilization work is needed. To map the problem, tap in several spots and note where the sound is the weakest. Look for

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