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Best plaster repair specialists near Simi Valley, CA

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TRUSTED BY SIMI VALLEY, CA HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon194
    Verified plaster repairs reviews

Top-Rated Plaster repair specialists in Simi Valley - Updated Nov 2026

Molder Plastering
4.9(
48
)
Plaster - RepairPlaster - Install

Serving Simi Valley, CA and surrounding areas

Approved

In business since 2000

Free estimates

Customers say: True professional

"Glen has been my go-to plaster repair expert for more than 15 years. His work is always top quality. I have seen him fix drywall in very tricky locations on small and extensive projects. He is reliable, punctual and reasonably priced. I recommend him without reservation."
Response time1 day
Response rate97%
18 neighbors recently requested a quote
Avatar for SH&S Lath and Plastering Inc.
SH&S Lath and Plastering Inc.
5.0(
5
)
Plaster - InstallPlaster - Install - For BusinessPlaster - Repair+1 more

Serving Simi Valley, CA and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

At SH&S Lath and Plastering Inc., we specialize in professional stucco and EIFS (foam) systems for homes and businesses. From new installations to repairs and full replacements, we handle every project with precision and attention to detail.\n\nWe are committed to quality workmanship, honest pricing, and reliable service. No job is too big or small — we make sure every project is done right and built to last.\n\nContact us today for a free estimate.

Stucco & Lath Install
Stucco & Lath Install
Stucco & Lath Install
Stucco & Lath Install
Stucco & Lath Install

+2

3 neighbors recently requested a quote
Artistic Plasters
4.5(
86
)
Plaster - Repair

Serving Simi Valley, CA and surrounding areas

In business since 2005

Free estimates

Emergency services offered

"Did a great job plastering the exterior of my house. Covered the areas where a door had been removed and windows had been enlarged to perfection. All the work was very detail oriented and completed on time. Kept the area clean and neat as he completed each stage of the work. I would highly recommend Robert for any job large or small."
Recommended by97%of homeowners
Avatar for Best Builders Group Inc
Best Builders Group Inc
5.0(
167
)
Plaster - InstallPlaster - Install - For BusinessPlaster - Repair+1 more

Serving Simi Valley, CA and surrounding areas

In business since 1999

Free estimates

Emergency services offered

"We just completed our remodeling project with Best Builders Group and it was a great experience overall. We added a master suite (appx 350 sq. ft.) to our house. We got several estimates from several construction companies and we decided to hire Best Builders Group for that because of their big experience in design, great price and great approach. The addition project was not simple at all but Zohar handled each stage of the work very productive and he always kept us up to date about the entire progress. His design was a huge advantage and it was the main thing that we couldn’t fins in the other ones. Our bathroom addition is definitely stunning and it’s our favorite part at the house now. Zohar also recommended to have a tile wall and floor tile that made the bathroom a beautiful one! More than that, he was very hard working worked extra hours because of our long schedules. Zohar and his professional crew were very respectful of our time and space. Overall, we are excited with the addition and thankful to Zohar and Best Builders group."
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+260

Recommended by99%of homeowners
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Plaster Repair FAQs, answered by experts

The tool you use to sand plaster will depend on the size of the project. If you’re just working on a small section of your wall to get rid of an uneven spot on the surface, hand-sanding might work. However, for larger projects, a drywall sander can make a huge difference when it comes to both time and elbow grease—and an orbital sander can help for detailed areas such as around ceiling fans.

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. 

Yes, you can install drywall over plaster, but there are important factors to consider. While it can create a smooth, flat surface, it is often not the best approach. Installing drywall over plaster will increase the wall's thickness, which can cause issues with existing window and door frames that may no longer fit. You might also need to adjust power outlets to keep them accessible. A better, though more expensive, option is to remove the old plaster and lath entirely before installing new drywall. Drywalling directly over plaster seals in the old material, and if any problems arise later, you will need to remove both layers down to the structural beams for repairs. Given the potential complications, this job is best handled by professionals.

Whether you can install or repair plaster yourself depends on the project's size and your comfort level with DIY projects. It's possible to handle small repairs on your own, but for larger projects like a room restoration or a full installation, it's often best to hire a local plaster professional. The final appearance, even coverage, and durability of the plaster depend heavily on proper wall preparation and application. If you are not 100% confident in your ability to achieve a professional result, letting an expert handle the job is a worthwhile investment.

Technically speaking, you can use drywall primer over plasters. However, oil-based primers work the most effectively on wall plasters. Meanwhile, water-based primers work just as well with drywalls. Nowadays, there are also universal primers suitable for drywall and plaster. Overall, you will be fine as long as you are using a trustworthy brand.

The Simi Valley, CA homeowners’ guide to plaster repairs

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