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Find Deck, fence, patio or porch clean and sealers in Smithtown

Avatar for LB Maintenance & Contracting, Inc.
LB Maintenance & Contracting, Inc.
4.7(
53
)

Serving Smithtown, NY and surrounding areas

Approved

In business since 1995

Free estimates

Emergency services offered

"They were very knowledgeable and did exactly what they told us they would do. Their quality of work was excellent. They were very dependable, stayed in contact with us and showed up when they said they would. We would highly recommend them"
 Deck Before
 Before steps
before sanding
when we arrived
before

+47

Response time5 hrs
Response rate93%
Recommended by94%of homeowners
Avatar for Gulf2Bay SoftWash
Gulf2Bay SoftWash
4.8(
304
)

Serving Smithtown, NY and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"The crew was friendly and professional and washed the house, fence, two sheds, deck and walkways, and brightened up the entire property. They did a superbly thorough job on both smooth surfaces like white vinyl siding and rough surfaces like decks and roofs. Although the other quote I received was materially less, I was impressed that the Gulf2Bay owner visited the property beforehand and explained everything that would be done and also explained the superiority of the "softwash" method in terms of protecting surfaces and longevity of results. The crew cleaned up beautifully and everywhere they worked looks like new."
Before & After Brick Patio
Brick Stoop W Railing
Pavers
Cedar Deck Restoration
Brick Patio

+24

Response time11 hrs
Response rate90%
Recommended by96%of homeowners
Avatar for MN Painting and Stucco
MN Painting and Stucco
4.8(
127
)

Serving Smithtown, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Small jobs welcome

"Mario power washed, sanded and re-stained our back deck, pool deck and front porch. He’s very friendly, knowledgeable and met all expectations - and then some. All the furniture needed to be taken off the deck including a heavy grill and Mario not only helped to remove it, but came back a few days later (in between two of his other jobs) to help put it back - above and beyond! I would absolutely recommend him."
Office project
Office project
Office project
Office project
Office project

+239

Response time5 hrs
Response rate97%
Recommended by89%of homeowners
Avatar for BuildingLI.com - BLI Facilities LLC
BuildingLI.com - BLI Facilities LLC
5.0(
32
)

Serving Smithtown, NY and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"I used these guys for a remodeling job which included bathroom renovation, some minor electrical work, knocking down and installing new dry wall and painting. Class acts! We all hear horror stories about contractors not calling you back or not showing up on time or showing up at all. Not these guys! Hector, Moises and their crew really did exactly what they said they were going to do. Friendly, responsive and oh yea, solid work! Professional through and through! Highly recommend them and would use them again!"
before demo
kitchen demolition
demolition complete
kitchen tile job in progress
kitchen tile

+172

Response time7 hrs
Recommended by76%of homeowners
Avatar for Top Tier Fencing LLC
Top Tier Fencing LLC
5.0(
7
)

Serving Smithtown, NY and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

"Erik did an awesome job on my chain link fence. He was transparent with pricing from the beginning, explained everything clearly, and there were no surprises or hidden costs. The work was completed on time, the fence looks great, and you can tell he takes pride in what he does. It?s not always easy to find someone who is both skilled and fair. If you?re looking for quality work, fair pricing, and someone you can trust to do what they say they?re going to do, I?d highly recommend Top Tier Fencing."
Chain link fence
5 neighbors recently requested a quote
Suffolk Peak
4.2(
30
)

Serving Smithtown, NY and surrounding areas

Approved

In business since 2005

Free estimates

Credit card accepted

"My deck needed to be repaired and painted. I couldn’t be happier with the results! Ryan is knowledgeable and meticulous. He was very responsive when I had a question. The price was reasonable and the result is beautiful. I plan to hire for future projects. I highly recommend. I highly recommend. I highly recommend Suffolk Peak"
Response time2 days
5 neighbors recently requested a quote
Recommended by95%of homeowners
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FAQs for deck, fence, patio or porch clean and seal projects in Smithtown, NY

You should clean your deck before sealing it. Cleaning before refinishing is critical. If you don’t remove dirt and debris, you'll trap moisture in the wood, which prevents the new sealer from working correctly and can lead to costly repairs. Whether you need to sand, power wash, or sandblast depends on your deck's condition.

Sealing and staining your deck are essential maintenance methods that protect and beautify your outdoor space. Stain adds rich color and guards against fading, while sealant fortifies the wood against moisture and weather damage. Wood type, climate, deck age, and the degree of existing damage determine whether your deck benefits from one or both treatments. Using both options extends your deck’s durability and enhances its overall appearance.

Power washing and sealing your deck costs $500 to $1,700. This process combines the removal of stubborn dirt and debris with a protective seal that preserves the wood’s integrity. Effective cleaning eliminates harmful buildup, and a proper seal prevents moisture damage and wood decay, ensuring long-term durability and reducing future repair expenses.

Your deck must be sealed every one to three years to maintain its strength and appearance. Regular sealing is essential to protect the wood against moisture, mold, and harmful UV rays. A consistent sealing schedule prevents rapid deterioration and costly repairs. Inspections should be performed annually to determine if the protective layer remains intact, extending the life of your deck.

Leaving your deck untreated compromises its structural integrity and safety. An unprotected deck rots quickly due to moisture and environmental exposure, which means that neglecting sealing results in rapid decay and expensive replacement costs of $4,125 to $11,650. Sealing your deck is essential for maintaining its durability and protecting your home.

The sealant on your deck dries within a few hours and reaches full cure within 72 hours before regular use. It is essential to wait until the complete curing period to ensure the protective layer fully sets and resists weather and foot traffic. Proper drying guarantees that your deck is fully protected against moisture and environmental damage, ensuring lasting quality.

The Smithtown, NY homeowners’ guide to deck, fence, patio or porch clean and seals

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