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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
23 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
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Deck Maintenance FAQs, answered by experts

That depends on the condition of your deck. An older deck that looks drab, worn, or has multiple damaged boards might be worth replacing before selling. However, if your deck is in good condition, you can simply clean, repaint, or stain it.

When deciding if you should use 2x6 or 2x8 deck joists, consider the size of the deck, joist spacing, and materials. Larger decks, larger-spaced joists, and weaker wood all require more support, meaning they need larger joists. For example, 2x8 redwood joists spaced 16 inches apart can only safely span up to 10 feet and 7 inches. On the other hand, 2x10 southern pine joists spaced 12 inches apart can be as big as 16 feet and 2 inches. If you aren’t sure what size joist is best for your project, speak with your deck builder.

Both aluminum and composite decking materials are environmentally friendly, with aluminum decking coming in as the most eco-friendly option. 

Though composite decking helps remove plastics from landfills, recycles wood, and lasts longer than traditional wood decks, it’s not recyclable and only lasts for 25 to 30 years on average. Aluminum can last well over 30 years and is almost always recyclable.

It’s best to use two screws to secure deck boards into every joist. Securing the boards to every joist makes the deck more structurally sound, while using two screws on the outer sides of the boards can help prevent warping and cupping.

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. 

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.