Top-rated deck, fence, patio or porch clean and sealers.

Get matched with top deck, fence, patio or porch clean and sealers in Knoxville, MD

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Top-Rated Deck, fence, patio or porch clean and sealers in Knoxville - Updated Nov 2026

Avatar for Deck Buddy, LLC
Deck Buddy, LLC
4.5(
29
)
Deck, Fence, Patio or Porch - Clean and Seal

Serving Knoxville, MD and surrounding areas

Approved

In business since 2011

Free estimates

Warranties offered

"I highly recommend Deck Buddy. Our screened porch (inside and out), deck and stairs were badly in need of cleaning and resealing. We had 4 different companies out here to quote the job. Deck Buddy was by *far* the most professional of the bunch, extremely competent and moreover pleasant to work with. They came exactly on time and were able to answer all my questions and were extremely knowledgeable about the work and the products/services they would use/perform. Their bid was neither the highest nor the lowest. Their service tech spent 3 days here cleaning, repairing, and refinishing our porch and deck. It looks like new. I am so pleased. We have attempted to do this work ourselves in the past, and paid to have it done by a different company once before, but never achieved the results Deck Buddy did. I should add, that when we paid to have this work done before, it did not seem like the other company applied very much product to the wood. This time, with Deck Buddy, you can see the wood is thoroughly sealed. Also, in comparison to our earlier experience, Deck Buddy took care to cover all my plants and also the house siding to protect from overspray. (Not protecting my plants was a problem with a different powerwashing company we hired once - my hostas were shredded - you have to watch out for this). Deck Buddy was extremely careful with everything and left no mess or debris behind, the porch and deck look great, the garden is unscathed. It was a job well done. Thank you!!!!"
Restoration
Restoration
Gazebo and Deck Restoration
Full Deck Re-Surfacing and Staining
Two Tone Restoration

+111

Response time10 mins
Recommended by91%of homeowners
Avatar for BLUE DIAMOND CONTRACTORS LLC
BLUE DIAMOND CONTRACTORS LLC
5.0(
14
)
Deck, Fence, Patio or Porch - Clean and Seal

Serving Knoxville, MD and surrounding areas

Approved

In business since 2010

Free estimates

Credit card accepted

"Josh came over quickly, measured, took pictures, and gave me a quote within my existing budget. Ronnie and Brock removed my old cooktop and under counter vent and replace them with new units. They were able to effectively deal with some minor issues and I was very pleased with their friendliness and professionalism. I would highly recommend them for any home improvement work."
Project Photo
29 neighbors recently requested a quote
Avatar for M.C. Fence and Deck
M.C. Fence and Deck
4.6(
442
)
Deck, Fence, Patio or Porch - Clean and Seal

Serving Knoxville, MD and surrounding areas

In business since 2005

Free estimates

Credit card accepted

"MC Fence & Deck built my dream deck, and I’m obsessed! Hunter walked me through the design, and his ideas made it way better than my original plan. John and his crew handled everything. Build and add an aluminum fence around the yard. They were professional and on time, and the craftsmanship is top-notch. Now my whole backyard looks like a magazine spread. I highly recommend these guys for decks and fencing. They’re the best in the business!"
Privacy wood fence in northern VA
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+33

Recommended by94%of homeowners
Avatar for Tony's Power Washing and Window Cleaning
Tony's Power Washing and Window Cleaning
4.8(
57
)
Deck, Fence, Patio or Porch - Clean and Seal

Serving Knoxville, MD and surrounding areas

In business since 2014

Free estimates

Warranties offered

"Tony power washed and stained the deck and fences as required. He did the work over a 2 weekend period to adjust to changing spring weather conditions which weren't favorable for staining. Tony is a very reliable contractor and I would use his services again for future deck and fence painting."
Siding soft wash
Siding washing
Siding washing
Additional Photos
Additional Photos

+22

Response time2 days
Response rate100%
Recommended by100%of homeowners
Avatar for Mel's Power Washing & Window Cleaning Inc
Mel's Power Washing & Window Cleaning Inc
4.4(
1,971
)
Deck, Fence, Patio or Porch - Clean and Seal

Serving Knoxville, MD and surrounding areas

In business since 2004

Free estimates

Credit card accepted

"Not only are the people nice, Mel and everyone who worked on the project did a great job. My wood deck needed cleaned, wood replaced, and stained. I am extremely happy with the results, and I would recommend this company highly."
Window cleaning
Interior paint project.
Working on a 60 ft. Ladder
Interior paint project.
Interior paint project.

+19

Recommended by86%of homeowners
Avatar for All Pro Exteriors
All Pro Exteriors
4.6(
62
)
Deck, Fence, Patio or Porch - Clean and Seal

Serving Knoxville, MD and surrounding areas

In business since 1991

Emergency services offered

"V & C was very courteous on the phone and in person.  They did an excellent job of making sure that everything was cleaned up to my satisfaction.  They arrived when they said they would and finished in a very timely.  They completed several minor repairs as well as removing  totally useless gutter covers I had installed many years ago.  I will happily hire them again!"
Recommended by94%of homeowners
Avatar for Blue Sky Home Services
Blue Sky Home Services
5.0(
65
)
Deck, Fence, Patio or Porch - Clean and Seal

Serving Knoxville, MD and surrounding areas

In business since 2018

Free estimates

Credit card accepted

"Wow…hire Blue Sky Home Services right now for just about any project in (or outside of) your home. I contact Blue Sky and the owner Roland with a punch list of items after I bought a new home. He and his team handled every single item. I was amazed by the quality of the work! I even added some things last minute and Blue Sky Home Services was able to get it done. Just incredible work."
Rockville Kitchen Remodel
Rockville Kitchen Remodel
Rockville Kitchen Remodel
Rockville Kitchen Remodel
Rockville Kitchen Remodel

+63

Recommended by100%of homeowners
...
Showing 1-10 of 98
FAQs for deck, fence, patio or porch clean and seal projects in Knoxville, MD

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 Knoxville, MD 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.