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  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon20
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Top-Rated Plaster repair specialists in Weston - Updated Nov 2026

Avatar for Continental Siding Supply
Continental Siding Supply
4.8(
605
)
Plaster - InstallPlaster - Install - For BusinessPlaster - Repair+1 more

Serving Weston, MO and surrounding areas

In business since 1982

Free estimates

Emergency services offered

"Needed to replace and repair lots of rotten wood, and peeling paint on the house. looked at several options, and Continental worked hard to earn my business. They made a great sell, and provided financing that worked within my budget. It may have taken a while to get the actual work started (due in part to the COVID pandemic slowing everything down) but they called me every two weeks with an update on my position in line. The house looks fantastic, and I never need to worry about rotten siding again. Would highly recommend."
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Classic Meets Modern Farmhouse
Classic Meets Modern Farmhouse
Classic Meets Modern Farmhouse

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Recommended by97%of homeowners
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Plaster Repair FAQs, answered by experts

Applying plaster to a wall will usually cost between $2 and $10 per square foot for both the material and labor. The cost will vary based on the quality of the plaster you’re using and whether or not prep work is required before the work begins. Wall prep can add up to about 10% to your total costs. Plastering exterior walls can be more expensive in many cases because they are taller and require scaffolding and safety equipment.

Plaster provides a durable, soundproof, and moisture-resistant finish compared to drywall.

It is possible to apply plaster on the interior or exterior of your home, but we don’t recommend it. Plaster is easy to apply in theory, but in reality, it can be a challenging material to work with, and it’s difficult to get the finished product to look clean, even, and smooth. Many DIYers end up calling in a professional afterward to touch up the area or even redo it entirely because of mistakes they made in the process. Hiring a plaster pro will cost more, but it’s usually the best option to achieve high-quality results.

This depends on how much plaster is applied and in how many layers, but a decent estimate is around 150 square feet. If you are applying only two coats on a small wall, there is a chance you may only need one or two gallons for the entire project. If you are plastering a large living room wall with high ceilings, using one of the more involved techniques–like Scagliola–that requires several coats, expect the project materials costs to add up quickly. 

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’ll commonly find drooping plaster ceilings in older homes. Improper installation, foot traffic, and water damage—often from a leaky roof or a broken pipe—can also cause plaster ceilings to sag.

The Weston, MO homeowners’ guide to plaster repairs

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