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.

Hands applying plaster on white wall with trowel and hawk

Plaster over painted surfaces: adhesion tests and when to scuff vs strip

Introduction Adhesion of plaster to painted surfaces depends on paint type and surface condition, and you should test adhesion before proceeding. A simple adhesion check lets you decide whether you can plaster over the paint as is, need to scuff the surface, or must strip the paint first. If the surface shows good grip after […]

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Plasterer holding trowel with plaster close up

Filling deep holes in plaster: backing methods that prevent shrinkage and cracking

Introduction Backing methods are techniques to support a plaster fill so it doesn’t shrink or crack. They create a stable base behind the hole before applying filler. When choosing a backing, check the wall type and follow safety and product instructions from the manufacturer or local rules. Begin by cleaning the hole and exposing solid

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Man applying plaster patch to interior wall

Dealing with nail pops in plaster: anchoring lath and patching without craters

Introduction Nail pops in plaster are raised spots where the plaster separates from the underlying lath, signaling loose fasteners or movement. Identify each pop by feel and sight, and note how many and where it occurs. Fixing starts with reattaching the lath and securing the plaster to prevent future craters. To anchor the lath, locate

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