How do I know if my plaster needs replacing?

• <div><p>Plaster that sags or bulges, shows extensive deep cracks, or is crumbling from water damage or simply time may need replacement. Plaster walls can look a little “worn” for a long time before they need replacing. The only real way to know if it needs a replacement is to hire a professional to assess the condition of the plaster.</p></div>

Are cracks in plaster walls serious?

• <div><p>Small hairline cracks in plaster walls are not serious and are mostly cosmetic, but larger or widespread cracks indicate structural problems that need repair. </p><ul><li><p><b>Cracks 0.5 cm (0.2 inches) or thinner: </b>Cosmetic cracks you can repair if desired.</p></li><li><p><b>Cracks wider than 0.5 centimeters or widespread cracks: </b>Structural repair is needed, either DIY or by a pro.</p></li><li><p><b>Cracks 2.5 centimeters (1 inch) or wider: </b>Contact a <a href="https://www.angi.com/nearme/plaster-plaster-repair/">plaster repair professional</a>.</p></li></ul><p>Watch for large, deep cracks, multiple cracks in the same area, and cracks along the walls where they meet the ceiling. Repair these cracks to prevent further damage.</p></div>

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Q: What damages plaster?

• <div><p>Plaster is a pretty tough surface, but it can still sustain damage from things like bumping against it, water issues, dampness, extreme humidity changes, and plain old age. Most plaster walls last hundreds of years and will only be taken down to the base layer when major repairs are required. Being cautious around the wall, not placing furniture against it, and ensuring stable humidity are all great ways to reduce possible damage. </p></div>

Q: Why is my plaster ceiling sagging?

• <div><p>Plaster ceilings can sag for several reasons. In some cases, the plaster and other building materials shift and come apart over time, which is why you&rsquo;ll commonly find drooping plaster ceilings in older homes. Improper installation, foot traffic, and water damage&mdash;often from a leaky roof or a broken pipe&mdash;can also cause plaster ceilings to sag.</p></div>

Q: What is the difference between plastering and skimming?

• <div><p>Skimming is covering drywall with a layer of drywall compound after installation or to smooth old walls. Plastering is covering walls with a mixture of gypsum or lime, cement or sand, and water. Plastering is more costly and labor-intensive than skim coating. Some homeowners and professionals refer to skim coating as plastering, even though the material spread over the wall is totally different.</p></div>

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Verified Reviews for Plaster Repair pros in Drummond, MT

*The Angi rating for Plaster Repair companies in Drummond, MT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Plaster Repair needs.

*The HomeAdvisor rating for Plaster Repair companies in Drummond, MT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Plaster Repair needs.

Last update on November 02, 2025

Reviewed in January 2024
The team at Paul Davis were prompt in responding with help, accessed the water damage, took steps to prevent more damage, cleaned up, repaired the area so that there would be no worry of mold or future water issues.
Paul Davis Restoration
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Reviewed in April 2023
Highly skilled, professional plumber. Treated my wife and I with the upmost dignity and respect. Tobin did a major repair of our homes boiler and heating system. System needed major repair due to damage from frozen pipes. We would highly recommend Bridger Creek Plumbing.
Bridger Creek Plumbing, LLC
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Reviewed in March 2023
Best customer service! I called Paul to repair our Monogram refrigerator because it stopped working. Paul was very knowledgeable, and he was able to identify the problem quickly. He ordered a new part and in few days he came back to installed it. The refrigerator works perfectly and we are very...
Big Horn Appliance Repair and Maintenance
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Reviewed in March 2021
Very knowledgeable of his trade. Very personable customer service. He completed the job timely and efficiently and educated on the cause of the electrical defect he fixed. His fair/advantageous cost along with his friendly and kind service was a welcomed relief when hiring for a repair and...
Diaz Electric
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Reviewed in September 2013
He arrived after our agreed time however called before and explained that he'd be late. This clearly demonstrates that he respects my time and me. He carefully placed drop cloths around my woodstove, then checked around the pipe for safety issues. He noted and, using some fiberglass...
Buffalo Chimney & Stove Installation
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Reviewed in August 2013
I have to take my car back because he found other repairs that need to be done. I like that I can get in fast and they do a really thorough job. I've used him many times before and I've never had any problem with any of the services I've gotten from them.
JR'S REPAIR INC
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Reviewed in May 2013
Not happy with the results. Most of the treads are now bowing upward and peeling off the supporting structure. Treads were nailed instead of screwed and nails are starting to pop up. The treads are starting to split. He should have used screws and there was something grossly wrong with...
SOUTH TEXAS SIDING
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Drywall Repair

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Plaster Repair

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Norwest Contracting

Norwest Contracting

Kevin Collom Plastering

Kevin Collom Plastering

Montana Flexteriors 2

Montana Flexteriors 2

A1 Tape and Paint

A1 Tape and Paint

ABC Nationwide Painting

ABC Nationwide Painting

Ameri Paint Precision

Ameri Paint Precision

LMN Construction LLC

LMN Construction LLC

MAGUIRE DRYWALL & PLASTERING

MAGUIRE DRYWALL & PLASTERING

The Drummond, MT homeowners’ guide to plaster repairs

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