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TRUSTED BY DIAMOND BAR, CA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon112
    Verified drywall services reviews

Top-Rated Drywall pros in Diamond Bar - Updated Nov 2026

Avatar for A J M Construction
A J M Construction
4.8(
103
)
Drywall - RepairDrywall - InstallDrywall - Install - For Business+1 more

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 1992

Free estimates

Small jobs welcome

"AJM Construction did a drywall repair in one of my rentals. They were on time, did a quality job, cleaned up afterwards and were polite to my tenant. I will use them again the next time that I need drywall."
Response time2 days
7 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for So Cal Drywall Services
So Cal Drywall Services
4.6(
88
)
Drywall - Repair

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 2000

Free estimates

Warranties offered

"This job was to anchor shelves in drywall. All except one shelf was replaced correctly. This one shelf was replaced upside down. The shelf is still usable, but it is noticeable that it is upside down."
CHINO HILLS GARAGE
Removed Water Damaged Drywall
 Mold Damage
CHINO HILLS GARAGE
Installed Insulation On Ceiling

+11

Response time7 hrs
Recommended by98%of homeowners
Avatar for System 1 Interiors
System 1 Interiors
4.8(
166
)
Drywall - RepairDrywall - Repair - For Business

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 1978

Free estimates

Credit card accepted

"Pedro did a great job at repairing my drywall and removing popcorn from my ceiling. The team at System 1 Interiors is very professional and is genuinely interested in doing a good job for its customers. I highly recommend this company."
Additional Photos
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Additional Photos

+19

Response time2 days
1 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Cedarwood Drywall Restoration
Cedarwood Drywall Restoration
5.0(
5
)
Drywall - RepairDrywall - InstallDrywall - Repair - For Business+1 more

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 2021

Free estimates

Offers commercial services

"Was really impressed with the Cedarwood Drywall and our point of contact Issac did at our home . The drywall repair under our kitchen sink and other work that was performed was top quality work . I was always updated throughout the project , I would highly recommend them to anybody ."
13 neighbors recently requested a quote
Avatar for Felan Drywall
Felan Drywall
5.0(
4
)
Drywall - InstallDrywall - Install - For Business

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 2017

Free estimates

Credit card accepted

Felan Drywall brings an unmatched commitment to excellence to your drywall and painting projects. We have over 8 years experience delivering unsurpassed professionalism, expertise, and value. We take pride in providing our customers with personalized customer service, the highest industry standards, and top quality workmanship. References available upon request. Give us a call today!

4 neighbors recently requested a quote
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Drywall FAQs, answered by experts

You can plaster over regular drywall, but it's essential to prepare the surface properly. Before plastering, the drywall should be clean, free of dust, and any loose or peeling paint should be removed. Applying a primer specifically designed for plastering can improve adhesion. Some professionals recommend applying a base coat of plaster or joint compound to create a better surface for the plaster to adhere to. Proper preparation ensures a smooth and durable plaster finish over regular drywall.

While a normal moisture level for drywall is between 5% and 12%, replacement is recommended if you get consistent readings above 17%. At this level, the drywall is likely too compromised by extensive moisture damage to be considered safe. You can replace either the entire sheet or just the affected section. If you are unsure after a visual inspection, it is best to have a contractor or water restoration provider use a professional moisture meter to get an accurate reading.

Professionals mount TVs using specialized tools and knowledge of different wall materials, ensuring safe support.

A utility knife is sharp enough to score the drywall and it may work in a pinch for outlet box holes. However, one of the best tools for drywall when you need to make exact cuts for an outlet box quickly is a drywall saw. This handheld tool has a longer blade than a utility knife, so it penetrates the thickness of the drywall easily. The design of its handle and the teeth in its blade make it easier to control while cutting quicker than you can with a utility knife.

Common causes include water leaks, settling, and impact. Address underlying issues to prevent recurring damage.

The Diamond Bar, CA homeowners’ guide to drywall services

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