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>

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Q: Is a sagging plaster ceiling dangerous?

• <div><p>The short answer is yes, a sagging plaster ceiling is dangerous. Sagging plaster on a wall is something you should fix immediately, but it isn&rsquo;t a major concern. If the same type of sagging occurs on a ceiling, however, you could be in danger of your ceiling falling in large chunks. When plaster sags, it loses its strength and ability to hold itself up. The bonds that hold it together are strong, though, so if a sagging area falls, it will take large pieces down with it. </p></div>

Q: How long does Venetian plaster last?

• <div><p>Once dried, Venetian plaster becomes a rock-like substance that&rsquo;s durable and excellent at resisting damage. If properly sealed to resist moisture and maintained, Venetian plaster should last for at least a decade but potentially as long as a lifetime. Thanks to its mineral content, it can also develop a patina.</p></div>

Q: How much does it cost to fix a shower leak behind the wall?

• <div><p>Like many other repair projects, the cost to fix a behind-the-wall shower leak depends on several factors. The cost of your repair may depend on the type of leak (from a clog or burst pipe), type of piping, and location of the leak. The extent of the issue and how difficult it is to access the pipes can greatly impact and increase your price. On average, you can expect to pay around <b>$150 to $600</b> to repair a leaking shower.</p></div>

Q: How do I know if I have plaster walls?

• <div><p>If your home was built before the 1940s and was not remodeled in the past 50 or so years, you probably have plaster walls. Aside from assuming, there are some <a href="https://www.angi.com/articles/how-to-tell-drywall-vs-plaster.htm">practical ways to tell if you have plaster walls</a>, including the following: If you knock on the wall and it feels solid, not hollow, if you can&rsquo;t insert a thumbtack easily, if there are cracks that look like spiderwebs, or if your home has curved, arched, or swirled walls, doorways, or window openings.</p><p>If you have an unfinished basement or attic, you could examine the backs of any finished walls to check, too.</p></div>

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Verified Reviews for Plaster Repair pros in Washington, KS

*The Angi rating for Plaster Repair companies in Washington, KS 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 Washington, KS 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 13, 2025

Reviewed in September 2024
Good communication, prompt repair done, ordered right part.
Besette Boys Plumbing & More, LLC
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Reviewed in September 2023
Like most everything, the costs are way up there. But, they were quick to come out, assess, and do the repairs.
Hot Shot Appliance, Heating and Cooling
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Reviewed in April 2023
Justin and his crew did a great job on my roof repair and was very prompt with the service.
JC Custom Services LLC
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Reviewed in September 2022
Nick was promt professional and very through. He took great efforts to ensure I fully understand the scope of the project the estimated time of repair and the cost. He is the first person I will call on any future plumbing needs.
Lba Air Conditioning Heating & Plumbing Inc
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Reviewed in February 2017
Perfectly. Travis arrived on time and performed all services in a professional manner. The repairs were made better than expected and the cleaning was performed without leaving a mess. Highly recommended.
K-Guard Kansas City
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Reviewed in December 2014
Prompt advice, friendly/competent and will return for future repairs/advice.
OVERLAND PARK SHOE REPAIR
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Reviewed in December 2014
I have contacted Paul, but so far have not seen him. He said he had to repair something. I would like to have this done ASAP but so far nothing has been done.
Professional Lawn and Tree
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Reviewed in October 2014
Called to make sure someone would be at the welding shop before making the long trip, was informed someone would be there. When I arrived the welder came out to meet me at my truck. He looked at the needed the repair on the aluminum marine exhaust manifold and said and quot;let's see what we...
PORTWOOD'S MOBILE WELDING
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Reviewed in July 2013
We purchased our sunscreen 4 seasons ago and it has not worked a full season yet. We are completely dissatisfied with this very expensive product. We are not interested in having this repaired yet AGAIN (which also incurs a fee that is not covered under warranty). The product is defective and...
Awnings By Haas, Inc.
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Reviewed in March 2011
When we hired Dustin to paint the exterior of the house I was impressed with his knowledge and honesty. We also added ceiling repairs from water damage and repairs to our skylight area. He painted the kitchen and repaired an area in the drywall of a bedroom and it. We needed a shutoff valve...
Lomonte Homes Painting & Remodeling
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Options Unlimited LLC

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Options Unlimited LLC

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Plaster Repair questions, answered by experts

The short answer is yes, a sagging plaster ceiling is dangerous. Sagging plaster on a wall is something you should fix immediately, but it isn’t a major concern. If the same type of sagging occurs on a ceiling, however, you could be in danger of your ceiling falling in large chunks. When plaster sags, it loses its strength and ability to hold itself up. The bonds that hold it together are strong, though, so if a sagging area falls, it will take large pieces down with it.

Once dried, Venetian plaster becomes a rock-like substance that’s durable and excellent at resisting damage. If properly sealed to resist moisture and maintained, Venetian plaster should last for at least a decade but potentially as long as a lifetime. Thanks to its mineral content, it can also develop a patina.

Like many other repair projects, the cost to fix a behind-the-wall shower leak depends on several factors. The cost of your repair may depend on the type of leak (from a clog or burst pipe), type of piping, and location of the leak. The extent of the issue and how difficult it is to access the pipes can greatly impact and increase your price. On average, you can expect to pay around $150 to $600 to repair a leaking shower.

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.

If your home was built before the 1940s and was not remodeled in the past 50 or so years, you probably have plaster walls. Aside from assuming, there are some practical ways to tell if you have plaster walls, including the following: If you knock on the wall and it feels solid, not hollow, if you can’t insert a thumbtack easily, if there are cracks that look like spiderwebs, or if your home has curved, arched, or swirled walls, doorways, or window openings.

If you have an unfinished basement or attic, you could examine the backs of any finished walls to check, too.

The Washington, KS homeowners’ guide to plaster repairs

From average costs to expert advice, get all the answers you need to get your job done.

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