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  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon94
    Verified deck maintenance services reviews

Top-Rated Deck maintenance specialists in Mahwah - Updated Nov 2026

A&M General Contracting, LLC
4.7(
60
)
Deck, Fence, Patio or Porch - Clean and Seal

Serving Mahwah, NJ and surrounding areas

Approved

In business since 2007

Free estimates

Credit card accepted

"I can't say enough good things about this company. Robert and Tim went above and beyond for me. I had my large deck power washed and stained. the first time with professionals. they came on time and completed the job in the specified time. I will certainly use this company again, and recommend them to others."
Before Calbrite
Calbrite clean
Before Calbrite
After Calbrite
Response time12 hrs
27 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Pro Builder New Jersey, LLC
Pro Builder New Jersey, LLC
4.8(
59
)
Deck, Fence, Patio or Porch - Clean and Seal

Serving Mahwah, NJ and surrounding areas

Approved

In business since 2016

Free estimates

Customers say: Quick response

"I wish all categories of home improvement could have a company such as Pro Builder from Garfield. Our wooden deck was in dire need of help. It was not an easy task because the deck is approximately 20 feet above ground level from the garden area. Through the expertise, knowledge, and commitment from this company, the project was finished on schedule. Our new composite deck looks outstanding!"
Response time2 days
5 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for CSZ Construction
CSZ Construction
4.6(
69
)
Deck, Fence, Patio or Porch - Clean and SealDeck, Fence, Patio or Porch - Clean and Seal - For Business

Serving Mahwah, NJ and surrounding areas

Approved

In business since 1998

Free estimates

Emergency services offered

"Cesar and his crew just finished a remodel of my master bathroom. This is the second major project completed in my home by CSZ (prior kitchen remodel) and once again they exceeded my expectations. Cesar worked with me along the way to come up with the perfect design to ensure all my requirements were met. He is knowledgeable and his attention to detail is second to none. The CSZ crew, Armondo and Benjamin were also a pleasure to work with. They are knowledgeable, trustworthy, and hardworking. They also did an exceptional job cleaning up at the end of each work day. My dog even loves them! I highly recommend CSZ Construction. They will most certainly be back for future projects in my home!"
 ALL COLUMNS FINISH
OLD DECK
Livinroom
 PAINTING
PREPARING FOOTINGS

+168

Recommended by93%of homeowners
Avatar for Best Builder Construction
Best Builder Construction
5.0(
53
)
Deck, Fence, Patio or Porch - Clean and Seal

Serving Mahwah, NJ and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

"Best Builder Construction has got to be the best roofing company in They re super knowledgeable and helpful in anyway that they can be. You wont work with another company thats more friendly and you wont have to. They do the whole job from roofs to gutters and siding to painting and finishing. All in one service you cant beat. Thanks for everything guys"
Roof Instalation
Chimney
Replaced Roof
Siding
Siding Instalation

+2

Response time5 hrs
Response rate100%
27 neighbors recently requested a quote
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Deck Maintenance FAQs, answered by experts

Before installing a new railing, check the condition of the deck frame and joists, especially around the perimeter where posts attach. If boards are loose, soft, or show signs of rot, the structure may need repair. A deck pro can inspect your framing to confirm it meets load-bearing requirements.

Before installing any materials under the deck for removing moisture, you should perform some prep work on the ground. Work the dirt under the deck to create a grade away from the home. A grade of at least six inches for every 10 feet works well. Do not leave a gap between the dirt and the home’s foundation where water could pool. Once you or a contractor regrades the dirt under the deck, you then can add materials over the top.

Pressure-treated decks last 15 to 20 years on average, but with proper maintenance, you could get 40 to 50 years of value from yours. Reseal your deck every one to two years, and replace old or rotted wood as soon as possible to avoid structural damage. Where you live plays a role in the lifespan of your deck. Intense sunlight, rainfall, wind, and hail can reduce the deck’s lifespan.

In most cases, your deck will need some form of deck footing to hold it in place, preventing moisture from rotting your wood and decreasing your deck’s lifespan. Concrete deck blocks are the most common type of footing for floating decks. Some homeowners use ground-level deck footings. For added security, consider digging and laying your ground-level footings below ground.

Homeowners should build their floating decks at least 18 inches off the ground. Having it at this height will allow for better airflow underneath and help prevent moisture-related problems like warping or rot. That being said, local guidelines for deck heights may vary depending on where you live.

The Mahwah, NJ homeowners’ guide to deck maintenance services

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