Fix the crack so it actually stays fixed
Most plaster patches just skim filler over the crack. A few months later it’s back, because filler was never the fix. The plaster had pulled loose from the wood lath behind the wall, and a surface patch can’t hold that.
Plaster Magic glues it back down. You inject the adhesive through small holes, clamp the plaster to the lath while it sets, and the wall pulls back together. The bond stays a little flexible, so it moves with the house instead of cracking again. It’s what restoration pros use when they want to keep the original plaster instead of hauling it to the dumpster.
Pick your kit by the size of the job
- Starter Pack. About 3 feet of crack. One 10 oz adhesive cartridge, one 16 oz conditioner, 25 clamps and screws, gloves, and a 10 cc syringe.
- Homeowner’s Pack. About 9 feet of cracks or 30 square feet of loose plaster. Three 10 oz adhesive tubes, one 16 oz conditioner, 25 clamps and screws, and gloves.
- Painter’s Pack. About 18 feet of cracks or 60 square feet. Six 10 oz adhesive tubes, one 32 oz conditioner, 25 clamps and screws, and gloves.
- Contractor’s Pack. About 48 feet of cracks or 160 square feet. Fifteen 10 oz adhesive tubes, two 32 oz conditioners, 50 clamps and screws, and gloves.
Made by Big Wally’s. Works on cracked or loose plaster walls and ceilings over wood lath.
Frequently asked questions
Can broken or cracked plaster be repaired?
Yes. Plaster Magic glues cracked, sagging plaster back to the wood lath behind the wall instead of just skimming filler over the crack. You inject the adhesive through small holes, clamp the plaster to the lath while it sets, and the wall pulls back together so the crack stays fixed.
What is the best way to repair plaster cracks that keep coming back?
Cracks come back because the plaster has pulled loose from the lath, and a surface patch cannot hold that. Plaster Magic reattaches it. The bond stays a little flexible, so it moves with the house instead of cracking again. It is what restoration pros use to keep the original plaster.
What sizes does Plaster Magic come in?
Plaster Magic comes in four sizes. The Starter Pack covers about 3 feet of crack, the Homeowner’s Pack about 9 feet of cracks or 30 square feet, the Painter’s Pack about 18 feet or 60 square feet, and the Contractor’s Pack about 48 feet or 160 square feet.
Who makes Plaster Magic?
Plaster Magic is made by Big Wally’s. It works on cracked or loose plaster walls and ceilings over wood lath, saving your original plaster instead of ripping out walls for drywall.
Stripping old paint? These guides from The Craftsman Blog show you how to do it safely and efficiently, lead paint and all.
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How To: Repair Plaster Walls
Don't tear down plaster — repair it. Scott shows the simple, money-saving fix for cracks and sagging that keeps your walls original. A repair kit gives you the adhesive system to do it right.
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From hairline cracks to water damage to sagging, this guide covers the four big plaster-ceiling problems and how to fix each. Reattaching loose plaster is often the first move. A repair kit gives you the adhesive to do it.