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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Hand holding trowel with white plaster compound close up

Repairing hairline plaster cracks: flexible fillers vs setting compounds

Introduction Hairline plaster cracks are small, fine fractures in plaster that generally indicate minimal movement. Choosing between flexible fillers and setting compounds depends on crack movement, plaster type, and the expected durability of the repair. This article treats the repair as a hands-on, practical task you can approach with basic preparation and care. Flexible fillers

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Person applying clay plaster over rough stone wall

Living with clay plaster in wet rooms: daily use, splash zones, and long-term touch-ups

Introduction Clay plaster in wet rooms is a breathable natural coating that helps manage moisture while providing a warm, tactile surface. In daily use, expect a soft, matte finish that can tolerate routine cleaning and occasional splashes. The material relies on proper backing and sealing in splash zones to perform well over time. Long-term upkeep

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Hands applying white plaster to a trowel

Venetian plaster finish basics: burnish stages and fixing drag marks and chatter

Introduction Venetian plaster finish basics explain how burnish stages create depth and how to manage drag marks and chatter during application. This guide walks through practical steps you can take when applying the plaster on walls or ceilings. It focuses on technique over theory, with plain language and real‑world checks. You’ll learn how the burnish

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Person applying plaster to ceiling with smoothing trowel

Fixing plaster delamination sounds: tap testing, injection options, and re-skim steps

Introduction Delaminated plaster is plaster that has separated from its backing and often sounds hollow when you tap it. This article explains how to listen for those sounds, perform a basic tap test, and decide on non-destructive or repair methods. Use plain language and confirm with manufacturer guidance and local rules before any work. Injection

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Person holding plaster mold over orange mold container on table

Mold on plaster surfaces: safe cleanup, moisture control, and repaint system choices

Introduction Mold on plaster surfaces is mold growth that appears where moisture is present. Look for discolored patches, texture changes, and a musty smell. This article covers safe cleanup, moisture control, and repaint options. Health effects of mold exposure can vary and may be more serious for some people. Follow safe cleanup practices, wear protection,

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paint tray with rollers and brush covered in paint

Preventing flashing under paint on plaster: primers that lock down porosity changes

Introduction Primers that lock down porosity changes help prevent flashing under paint on plaster by sealing the surface before coating. Proper surface prep and choosing the right primer are crucial steps. Follow the product label and local guidance for preparation and recoat requirements. Assess plaster porosity by a simple, dust‑free test and plan primer accordingly.

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