Get matched with top deck cleaning pros in Boulder, MT

Q: How high should a floating deck be off the ground?

• <div><p>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. </p></div>

Q: What kind of base or substructure is required for composite decking?

• <div><p>Composite decking requires a solid foundation or substructure for support. This base is typically a frame composed of posts, beams, joists, and footings. The frame can be built from various materials, such as composite, plastic, timber, or metal, depending on your budget, deck type, and environmental conditions. For maximum stability, a professional deck builder may recommend installing this frame on top of a solid concrete base. It is best to discuss the most suitable substructure design and materials for your specific project with a professional.</p></div>

Q: Do composite decking warranties cover warping?

• <div><p>Many composite decking manufacturers, including the popular Trex brand, offer warranties that protect against warping under specific conditions. These warranties typically last between 20 and 50 years, but they usually exclude claims related to improper installation of the product. Some manufacturer warranties only cover decks built by certified professionals. </p></div>

Q: Do I need to seal the underside of a deck?

• <div><p>Staining and sealing the underside of a deck creates a moisture barrier but traps water in the boards, quickly leading to rot. No matter how well you seal the above deck, water still gets through via nails and screw heads on the surface. Allow this water to flow naturally under the deck, where it is routed through the drainage system.</p></div>

Q: What is the best grade of lumber for a deck?

• <div><p>When building a deck, #2 grade lumber is a go-to for several reasons. It&rsquo;s strong, budget-friendly, and works well for most framing and decking needs. But upgrading to #1 or Appearance Grade can give your deck that extra visual edge if you're after a cleaner, more polished look for high-visibility spots.</p></div>

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Verified Reviews for Deck Cleaning pros in Boulder, MT

*The Angi rating for Deck Cleaning companies in Boulder, MT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Deck Cleaning needs.

*The HomeAdvisor rating for Deck Cleaning companies in Boulder, MT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Deck Cleaning needs.

Last update on May 31, 2026

Reviewed in May 2026
Jennifer with DeBella&#39;s was super awesome and helpful!! We love our siding! When it dropped to well below 0 for weeks, no problems! And lower heating bills than years before! In the summer, the house stayed cooler aswell with the new siding. Couldn&#39;t be happier!!
DaBella - Bozeman (Bath/Siding)
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Reviewed in March 2026
Very polite. Completed the job quickly, did a quality job and cleaned up before leaving.
Smith Construction, Inc.
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Reviewed in November 2024
Everything went very smooth with the first consult all the way through to the texts leading up to the install. Great group of people to work with!
Renewal by Andersen of Montana
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Reviewed in August 2024
Great people to work with, family business, trustworthy, did an excellent job ripping up and replacing our driveway. They completed the job in one day and without any issues. Attention to detail. Highly recommend them and you won't have to worry about the quality of the job they'll do.
Ted's Asphalt Repair
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Reviewed in November 2022
Nathan is an excellent worker who works speedily and professionally. He replaced our dining room and bathroom floor and did such an excellent job that we want to hire him back to do our kitchen floor!! I would recommend Nathan to anyone!!!
Freedom Flooring
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Reviewed in October 2021
Royal Construction managed a 6000 sgft Unique Log Home construction and finishing, inside & out, over multiple phases. Shane & his crew were detail oriented, overly efficient in design and material usage, punctual and 100% reliable to his word and bids. We would not have been able to...
Royal Construction & Remodeling
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Reviewed in December 2020
We went into the Helena location in July and picked out a shed to be built. We were told 8-10 weeks from time of order, so we put $1800.00 down that day. We were told we would receive updates along the build, and to expect our shed in late August, early Sept. By mid Sept, we still had no shed,...
TUFF SHED INC - Helena
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Reviewed in June 2020
John was extremely friendly, suggesting others to do portions of the work where he didn't consider himself an expert. They were, and the job was done right. For the part he did, the work was fast, clean, and done with a smile. He's my new go-to plumber in the Boulder/Helena area.
Sorensen Plumbing
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Reviewed in April 2020
He is very meticulous, takes pride in his, work, and makes sure whatever he does is done to code. I was pleased with the work he did for me!
DLH Electric
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Reviewed in February 2020
Wilson and his Crew did amazing once again. We hired them to do our fence last summer and decided to use them again to replace our roof. They went above and beyond and did extra cleanings they didn t need to do. Would definitely recommend them!
Creative Effects Landscape
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Find Deck cleaning pros in Boulder

Professional Coatings

4.6(

)

Deck, Fence, Patio or Porch - Clean and SealDeck, Fence, Patio or Porch - Clean and Seal - For Business

Serving Boulder, MT and surrounding areas

Approved

In business since 1998

Free estimates

Credit card accepted

"Fast, Professional, great clean up"

Response time2 days

45 neighbors recently requested a quote

Recommended by91%of homeowners

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Chase Contracting Services

5.0(

)

Deck, Fence, Patio or Porch - Clean and SealDeck, Fence, Patio or Porch - Clean and Seal - For Business

Serving Boulder, MT and surrounding areas

In business since 1996

"It went really well and they were on time."

Recommended by100%of homeowners

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Steve brown

New to Angi

Deck, Fence, Patio or Porch - Clean and SealDeck, Fence, Patio or Porch - Clean and Seal - For Business

Serving Boulder, MT and surrounding areas

In business since 2019

Free estimates

Ranch work\nWell experienced

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Allen's Siding & Windows, Inc.

New to Angi

Deck, Fence, Patio or Porch - Clean and Seal

Serving Boulder, MT and surrounding areas

In business since 1988

Allen's Siding & Windows, Inc., is a Full Service,Owner Operated Company for over 17 years in complete exterior home improvements from custom design additions, sunrooms, patios, and decks to complete siding and window installations and repairs as well as all exterior window treatments including custom shutters and awnings. We specialize in ALSIDE ULTRAMAX Windows, which have been energy star partner for 3 years running. We work with you from start to finish with complete client focus, and professional personalized service giving superior craftsmanship with attention to each detail to ensure we create the vision you have for your home. Hire The Contractor not a Salesman. Please see our website at www.sydngys.com

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Deck Cleaning questions, answered by experts

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.

Composite decking requires a solid foundation or substructure for support. This base is typically a frame composed of posts, beams, joists, and footings. The frame can be built from various materials, such as composite, plastic, timber, or metal, depending on your budget, deck type, and environmental conditions. For maximum stability, a professional deck builder may recommend installing this frame on top of a solid concrete base. It is best to discuss the most suitable substructure design and materials for your specific project with a professional.

Many composite decking manufacturers, including the popular Trex brand, offer warranties that protect against warping under specific conditions. These warranties typically last between 20 and 50 years, but they usually exclude claims related to improper installation of the product. Some manufacturer warranties only cover decks built by certified professionals.

Staining and sealing the underside of a deck creates a moisture barrier but traps water in the boards, quickly leading to rot. No matter how well you seal the above deck, water still gets through via nails and screw heads on the surface. Allow this water to flow naturally under the deck, where it is routed through the drainage system.

When building a deck, #2 grade lumber is a go-to for several reasons. It’s strong, budget-friendly, and works well for most framing and decking needs. But upgrading to #1 or Appearance Grade can give your deck that extra visual edge if you're after a cleaner, more polished look for high-visibility spots.

The Boulder, MT homeowners’ guide to deck cleaning services

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

See all articles

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•
Jul 9, 2026Jul 9, 2026
How Much Does Deck Refinishing Cost? [2026 Data]
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How to Clean Decking Safely and Naturally
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How to Clean a Deck Before Staining
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Top Deck Maintenance Tips for Every Decking Material
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Mar 6, 2026Mar 6, 2026
How to Clean and Seal Your Deck in One Weekend
Knowing how to clean and seal a deck can help extend its life and keep it looking like new. This DIY guide sheds light on the best way to clean a wood deck.