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TRUSTED BY MOUNTAINSIDE, NJ HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon209
    Verified deck repair services reviews

Top-Rated Deck repair pros in Mountainside - Updated Nov 2026

A&M General Contracting, LLC
4.7(
60
)
Deck or Porch - Repair

Serving Mountainside, NJ and surrounding areas

Approved

In business since 2007

Free estimates

Credit card accepted

"Andrew and the crew were easy to work with, professional and completed the project in the time they said they would to install the deck. If I had any questions, they promptly answered them and provided suggestions when asked. I would hire them again."
Before Calbrite
Calbrite clean
Before Calbrite
After Calbrite
Response time12 hrs
27 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Dominion Construction
Dominion Construction
5.0(
40
)
Deck or Porch - Repair

Serving Mountainside, NJ and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

"Tim was prompt, professional & listened to my questions and answered my questions patiently. His knowledge of materials and costs helped me get this project done well & in my spending plan too. My decks are now in great shape, look better than they have for some time, since Dominion’s very skilled crew replaced worn decking and stained the deck and railings. Our family can really enjoy this special part of our home for years to come now!"
Home Siding Is Complete
Home Siding Is Complete
Home Siding Is Complete
Home Siding Is Complete
Home Siding Is Complete

+132

2 neighbors recently requested a quote
Avatar for Pro Master Construction NJ, LLC
Pro Master Construction NJ, LLC
5.0(
130
)
Deck or Porch - Repair

Serving Mountainside, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Emergency services offered

"Pro Master Construction saved the day with our roof repair project. From the initial assessment to the final fix their team was professional, efficient, and knowledgeable. Highly recommend their services."
Before
Before
Before
Before
After

+71

Response time6 hrs
Response rate98%
140 neighbors recently requested a quote
Avatar for Trinium Home Improvement LLC
Trinium Home Improvement LLC
5.0(
16
)
Deck or Porch - Repair

Serving Mountainside, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Emergency services offered

"I hired Trinium Home Improvement for a deck repair. Mike was highly professional during the whole process, keeping us informed with all the details. The job was done within 3 days, they cleaned after themselves and our deck looks as good as new. I would highly recommend them and would definitely hire them again."
New Deck Build with Trex
New Deck Build with Trex
New Deck Build with Trex
New Deck Build with Trex
Deck Project

+42

Response time9 hrs
Response rate100%
6 neighbors recently requested a quote
Avatar for Great Group Home Improvement, LLC
Great Group Home Improvement, LLC
4.7(
58
)
Deck or Porch - Repair

Serving Mountainside, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2007

Free estimates

Emergency services offered

"Mike and crew did an excellent job on my deck Also roofing work and overall carpentry I knew he was the “guy” when we had our consultation. Excellent work Top notch👍🏻⭐️⭐️⭐️⭐️⭐️"
Roof Replacement
Roof Installation
Custom Deck build
Chimney
Deck

+15

Response time5 hrs
Response rate99%
2 neighbors recently requested a quote
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Deck Repair FAQs, answered by experts

You can use a few different tactics to prevent your deck gate from sagging. Aside from using strong, rot-resistant woods, introducing a diagonal element—such as a tension rod or solid piece of wood to act as a brace—across the gate will offer better support. You can also use rigid joists to prevent the gate from sagging.

You can add a roof to most decks, but you need to have it inspected first. If your deck didn’t come with a roof initially, it may not be able to handle the weight without some structural changes. You can add additional supports to your existing deck to safely add a roof, and tying your deck’s roof to an exterior wall can help add some structural stability, but remember these aren’t DIY projects and need to be left to a pro. 

It is recommended to clean your deck once or twice a year to prevent the accumulation of dirt, debris, mold, and mildew. The ideal times for cleaning are in the spring and fall. A spring cleaning removes grime that has built up over the winter, preparing your deck for summer use. A fall cleaning washes away messes from summer activities, preventing them from setting into the wood over the winter. The exact frequency can depend on factors such as how often the deck is used, its exposure to pollen, and whether salt was used on it during the winter. Regular cleaning helps protect the wood and its finish from damage.

Yes, you can build a deck over your outdoor HVAC unit, but you need to leave at least 5 feet of vertical clearance above the unit. If you don’t want your deck to be that high off the ground, you could build a floating deck in another part of your yard—again, as long as you leave at least 4 feet of horizontal space between the deck and your AC unit.

When installing deck boards, screws are generally a better option than nails. Screws offer superior holding strength over time, keeping the boards securely in place. In contrast, nails are more likely to pop out, which can create a tripping hazard. While you can use either, we recommend using 3-inch galvanized deck screws. To minimize the risk of cracking the wood, it's a good practice to drill small pilot holes before driving the screws into the deck joists.

The Mountainside, NJ homeowners’ guide to deck repair services

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