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  • 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
26 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%
144 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

If you want to make a deck cleaner from products already in your home, there are various options. The most common is to use a gentle blend of 1 gallon of warm water and 2 tablespoons of ammonia-free dish soap. You can also mix water with distilled vinegar. Sprinkling on some baking soda can help to remove mold and mildew. You can add oxygen bleach (but never damaging chlorine bleach) to the water and ammonia-free dish soap solution for something a bit stronger. 

Applying too much sealer to a deck might seem like extra protection, but it can cause more harm than good. Wood is a porous material with a limited capacity to absorb liquids. When you go overboard with sealer, the excess can't soak in and instead forms a film on the surface. This leftover layer is prone to peeling, cracking, and trapping moisture, ultimately defeating the purpose of sealing in the first place. 

Yes, but ensuring the deck has a solid foundation with adequate footings is critical before building, as the weight of a sunroom will put significant pressure on the structure below. Even if your deck is properly constructed, it may not be able to handle the extra weight. While some basic, lightweight, prefabricated sunrooms can sit on a deck with a strong existing foundation without additional supports, in many cases, the foundation and joists will need reinforcement. It is always best to have a structural engineer perform an inspection to evaluate the deck's quality and structural integrity. A professional can help you decide if reinforcement is sufficient or if it's better to tear down the deck and start over.

Yes, deck footings typically require an inspection before laying down concrete. While not all local building codes require footing inspection, proper placement ensures a safe and structurally sound deck. An inspector will verify that the deck can adequately hold what you put on top of it., and that the footings have been dug to the correct dimensions.

Yes, transforming a deck into a sunroom is an absolute possibility. Building a sunroom involves framing in the deck area with walls, adding windows, and affixing a roof. This project is not an easy task, but it does provide a stylish addition to your house. Not all deck designs support this type of renovation project, so consult a professional deck builder before beginning.

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.