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  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon69
    Verified deck maintenance services reviews

Top-Rated Deck maintenance specialists in Mount Sinai - Updated Nov 2026

Avatar for LB Maintenance & Contracting, Inc.
LB Maintenance & Contracting, Inc.
4.7(
53
)
Deck, Fence, Patio or Porch - Clean and Seal

Serving Mount Sinai, NY and surrounding areas

Approved

In business since 1995

Free estimates

Emergency services offered

"lou was on time, neat, did a fine job power washing, sanding and staining our old deck. He replaced a rotted potion of decking at no extra cost as well as other extras at no cost or minimum and extremely fair prices. I highly recommend LB Maintenance."
 Deck Before
 Before steps
before sanding
when we arrived
before

+47

Response time5 hrs
Response rate100%
2 neighbors recently requested a quote
Xpress Powerwashing
5.0(
73
)
Deck, Fence, Patio or Porch - Clean and SealDeck, Fence, Patio or Porch - Clean and Seal - For Business

Serving Mount Sinai, NY and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

"Melvin and his team did an outstanding job softwashing the house, windows, deck and fence. They were careful not to damage the flower beds. They were meticulous in making sure everything was cleaned. They even washed the furniture on the deck when requested. The value for what I was charged was excellent. This is the second year in a row that I have used them and intend on using them going forward. I would highly recommend them."
Response time5 hrs
Response rate100%
14 neighbors recently requested a quote
RC Cleaning and Handyman Services
5.0(
13
)
Deck, Fence, Patio or Porch - Clean and Seal

Serving Mount Sinai, NY and surrounding areas

Approved

In business since 2005

Free estimates

Small jobs welcome

"This was the first time we had our deck power washed and stained by Rob. It hasn't looked this good since it was built. He also replaced some broken lattice work and everything he did was in a very skillful manner. We've already asked Rob to do other jobs for us around the house. We highly recommend him."
Response time1 day
2 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for BuildingLI.com - BLI Facilities LLC
BuildingLI.com - BLI Facilities LLC
5.0(
32
)
Deck, Fence, Patio or Porch - Clean and SealDeck, Fence, Patio or Porch - Clean and Seal - For Business

Serving Mount Sinai, NY and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Hector and Moises were excellent! Hector came with one other of their crew and assembled my permanent gazebo. I have stone pavers and they were very careful in cutting them and digging Deep enough to establish a good anchor. They even installed railings for my back stoop. I would highly recommend them! Clean... affordable and professional."
before demo
kitchen demolition
demolition complete
kitchen tile job in progress
kitchen tile

+172

Response time7 hrs
Recommended by76%of homeowners
On Target Contracting
4.3(
32
)
Deck, Fence, Patio or Porch - Clean and Seal

Serving Mount Sinai, NY and surrounding areas

Approved

In business since 1990

Free estimates

Small jobs welcome

"I cannot say enough good things about these guys and how they work. They are very clean, neat, and professional. They expanded my original vision of my deck and ran with it. It is amazing. I will 100% be calling them back for my other projects. Thank you, thank you, thank you."
Response time8 hrs
Response rate89%
Recommended by88%of homeowners
Avatar for Sebonac Creek Landscape
Sebonac Creek Landscape
4.6(
9
)
Deck, Fence, Patio or Porch - Clean and SealDeck, Fence, Patio or Porch - Clean and Seal - For Business

Serving Mount Sinai, NY and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"Every person Iâ ve come into contact with at Sebonac has been friendly and professional. For me personally, one of the most important things, and what Iâ ve had problems with in other companies, is communication. These guys pick up the phone when I call, and if they canâ t they immediately call back. Iâ ve worked with a lot of different companies through the years and their prices are fair and just overall I really like their attitude when it comes to problem solving or working through any issues I have. There good people and do good work."
Response time7 hrs
Response rate93%
6 neighbors recently requested a quote
Suffolk Peak
4.2(
30
)
Deck, Fence, Patio or Porch - Clean and SealDeck, Fence, Patio or Porch - Clean and Seal - For Business

Serving Mount Sinai, NY and surrounding areas

Approved

In business since 2005

Free estimates

Credit card accepted

"We requested quotes to "REPAIR OR REPLACE" our existing deck. We were very pleased that when Ryan and Tommy arrived and did a complete inspection over and under our deck they said repair, replace some boards and repaint. They provided a fair quote and time frame and completed the work on schedule. The entire experience has been a good one. The two man staff they provided, Rodney and Tony and Job Manage Tommy, were pleasant and professional. They worked continuously even during recent heat wave. We are very satisfied with R & Ds work quality and professionalism. Neighbors commented on work done and the young men doing the work. JOB WELL DONE!!!"
Response time3 days
5 neighbors recently requested a quote
Recommended by95%of homeowners
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Deck Maintenance FAQs, answered by experts

If you have wood decking, there are several common deck problems that you might encounter. For example, your natural wood boards may fade over time due to things like sunlight, weather, and debris. On top of that, some types of wood decking can rot, grow mold, and attract destructive pests—including termites, carpenter ants, and woodpeckers.

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.

Liquid rubber is great for waterproofing, but it can damage your deck if it’s not applied correctly. First, it can trap moisture in the wood if the deck isn’t completely dry before application.  Second, applying it too thickly can create a heavy, rubbery surface layer that peels and cracks under fluctuating temperatures. For the best results, ensure the wood is completely dry before application, and apply the liquid rubber in thin, even coats. A quick inspection every now and then will help you catch any issues early, keeping your deck protected and looking its best.

Most building codes require that railing spindles (also known as balusters) on decks or stairs be spaced no more than four inches apart. This safety standard is often called the '4-inch sphere rule,' which means a sphere with a 4-inch diameter should not be able to pass through the opening between balusters. This rule is in place to prevent small children and pets from slipping through the railing. For the same reason, the space between the bottom rail and the deck or floor surface should also be no more than four inches. As a general guideline, professionals often install three balusters per foot of railing. However, since specific requirements can vary by location, it is essential to check your local building codes to ensure compliance before starting your project.

Deck repairs cost around $800 to $3,500 . However, your cost depends on the type and severity of the repair, as well as the type of decking material you have. Other factors, like location and labor costs, impact the price, too. Boards and railings are the priciest parts of a deck to repair, while loose stairs are less expensive to fix.

The Mount Sinai, NY homeowners’ guide to deck maintenance services

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