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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
24 neighbors recently requested a quote
Recommended by100%of homeowners
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%
130 neighbors recently requested a quote
Avatar for Pro Line Construction, LLC
Pro Line Construction, LLC
4.7(
479
)
Deck or Porch - Repair

Serving Mountainside, NJ and surrounding areas

Approved

In business since 2007

Free estimates

Emergency services offered

"Very satisfied with Pro Line construction from start to finish.Tony came to measure and do a full and detailed presentation on what the new roof would entail. They are platinum installers for Owens Corning - which means they receive extra training for the latest materials in the business. Unfortunately , because of the fickleness of weather they couldn?t come as quickly as hoped. However , once they came they were amazing. I had 7 men ripping off my two layer roof and garage roof - and they looked like Santa?s helpers. The dumpster filled and materials were stacked all over the lawn and they never stopped working. The project manager stopped by several times a day and got on the roof to monitor progress. By the end of the second day the job was done. They didn?t leave until 7 pm and after blowing clean my deck and lawn. It was spotless. Awesome job well done"
Skylight repair
Skylight repair
Rebuild new chimney foundation up
ROOFING
new roof

+313

Response time6 hrs
Response rate85%
1 neighbors recently requested a quote
Avatar for New-Gen Construction NJ LLC
New-Gen Construction NJ LLC
4.7(
26
)
Deck or Porch - RepairDeck or Porch - Repair - For Business

Serving Mountainside, NJ and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"In addition to replacing siding, decks, brickwork, and chimneys, they assisted with our roofing repair. It was a terrific one-stop shop for us for practically all of our house maintenance needs!"
New Steps + Railings.
New Steps + Railings.
Skylight + Roof Repair.
Skylight + Roof Repair.
Skylight + Roof Repair.

+53

Response time5 hrs
Response rate100%
89 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

DIY staining or painting is manageable with proper preparation, including safety measures, necessary tools, and adherence to safe weather conditions for application.

Composite decking requires a solid foundation or substructure for support. This base is typically a frame composed of posts, beams, joists, and footings. The frame can be built from various materials, such as composite, plastic, timber, or metal, depending on your budget, deck type, and environmental conditions. For maximum stability, a professional deck builder may recommend installing this frame on top of a solid concrete base. It is best to discuss the most suitable substructure design and materials for your specific project with a professional.

For a 12x20-foot (240-square-foot) deck, you can expect to pay between $7,200 and $14,400. This cost is based on a general price of $30 to $60 per square foot. The final price will depend on factors such as the decking material, design complexity, deck type, location, and local labor costs. Keep in mind that add-ons will increase the total; for example, adding an under-deck drainage system to a deck of this size could cost an additional $7,700.

Rot loves moisture, so deck rot typically impacts the parts of a board that stay wet. This includes the underside of boards, in addition to support posts and joists. However, any part of a board can rot, given the right conditions. 

It depends on the type of wood. The average cost to build a deck out of pressure-treated lumber is $15 to $25 per square foot, but more affordable varieties such as bamboo and cedar cost less at around $3 to $10 per square foot. However, when comparing the cost of vinyl decking versus wood decking, it’s important to also consider ongoing maintenance costs. For example, most woods require regular sealing to keep them protected against weather and rot.

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.