close
Advertisement
Shop Now
Magazine

How to Repair Damaged Plaster

Step-by-step DIY guide on repairing plaster cracks and holes in your walls or ceiling.

How to Repair Damaged Plaster

What you'll need

  • Drop sheets
  • Dust mask, work gloves and goggles
  • Scraper
  • Spray bottle with water
  • Bonding and sealing agent
  • Carrying board (to hold plaster)
  • Plaster
  • 100mm and 150mm broadknives
  • Sanding block
  • Primer and paint
  • Filling knife
  • Sanding float and abrasive paper
How to Repair Damaged Plaster

STEP 1
To repair a plaster crack, first move furniture out of the area and put down drop sheets. Wearing a dust mask, eye protection and work gloves, rake out any loose material with a suitable scraper.

How to Repair Damaged Plaster

STEP 2
Dust the inside of the crack and lightly mist with water; wait until it's absorbed. Mix a bonding agent; let dry. Apply the plaster and fill the hole. Sand when the plaster is completely dry. Spot-prime and paint.

How to Repair Damaged Plaster

STEP 3
To repair a hole, remove any loose or crumbling plaster with a scraper. Dust inside of the hole and mist with water; wait until it's absorbed. Apply a bonding agent, and allow about 45 minutes to dry

How to Repair Damaged Plaster

STEP 4
Using a 100mm broadknife, fill the hole with plaster from the centre out to a depth just below the wall surface. Before the plaster sets, scratch surface with a filling knife to create a crosshatch pattern. Let dry.

How to Repair Damaged Plaster

STEP 5
Using a 150mm broadknife, apply a finishing coat (use skim-coat if available). Check wall is level and smooth. If necessary, apply another thin coat of plaster. Sand lightly with medium abrasive paper.



More in DIY Projects

The 1-hour Deck

The 1-hour Deck

Use Handi Blocks to build a deck in no time at all.

Build an A-frame Chicken Coop

Build an A-frame Chicken Coop

Keep chickens safe and comfy with a well-made coop.

How to Restore Rotted Timber

How to Restore Rotted Timber

When old timber becomes worn or rots away, reach for the epoxy wood filler.

Cutting Holes in Plasterboard

Cutting Holes in Plasterboard

One of the most frustrating and time-consuming parts of fixing plasterboard is cutting holes for electrical outlets and light fittings. Here's how to cut perfect holes, first time.

How to Build a Brick Letterbox

How to Build a Brick Letterbox

How to build a permanent front yard concrete and brick letterbox around the water meter

Advertisement