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TRUSTED BY MERRIMACK, NH HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon64
    Verified deck maintenance services reviews

Top-Rated Deck maintenance specialists in Merrimack - Updated Nov 2026

Avatar for DC Carpenter, LLC
DC Carpenter, LLC
4.7(
161
)
Deck, Fence, Patio or Porch - Clean and SealDeck, Fence, Patio or Porch - Clean and Seal - For Business

Serving Merrimack, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2002

Free estimates

Emergency services offered

"Dennys redid the concrete footings of my deck. He and his crew came out quickly, and finished the job in 2 days. I am very happy with the results. They also did a good job cleaning up the job site. I highly recommend DC Carpenter."
New Construction
Framing
House Wrap
Siding and Trim
Framing

+20

Response time1 day
9 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Freedom Framing and More, LLC
Freedom Framing and More, LLC
4.3(
14
)
Deck, Fence, Patio or Porch - Clean and SealDeck, Fence, Patio or Porch - Clean and Seal - For Business

Serving Merrimack, NH and surrounding areas

Approved

In business since 2014

Free estimates

Warranties offered

"The project is underway and will be completed on time. Mathew is very personable and easy to work with. He has kept me informed about every step thus far. I’m looking forward to having our new space completed and ready to use."
Before
During
Wrapping up
Finished
Prep

+34

Response time2 days
Response rate95%
Recommended by84%of homeowners
Carlos Carpentry
5.0(
1
)
Deck, Fence, Patio or Porch - Clean and Seal

Serving Merrimack, NH and surrounding areas

Approved

In business since 2006

Offers commercial services

Customers say: Quick response

We take great pride our experience, expertise, quality, and customer service that we provide to meet the consumers' needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. To understand the needs and expectations of our customers, we take great care to work and communicate with every customer a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

Recommended by100%of homeowners
Avatar for JM Contractor LLC
JM Contractor LLC
5.0(
1
)
Deck, Fence, Patio or Porch - Clean and SealDeck, Fence, Patio or Porch - Clean and Seal - For Business

Serving Merrimack, NH and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

Exterior Painting
Exterior Painting
Painting
Painting
Deck

+15

Response time1 day
Response rate94%
1 neighbors recently requested a quote
Sonart Construction Corp.
2.3(
7
)
Deck, Fence, Patio or Porch - Clean and SealDeck, Fence, Patio or Porch - Clean and Seal - For Business

Serving Merrimack, NH and surrounding areas

Approved

In business since 2013

Free estimates

Credit card accepted

Sonart Construction Corp. has over15 years of experience in providing a variety of exterior and interior renovation services. We provide services to Palm Beach, Broward and Miami-Dade Counties.. We specialize in Bathroom Remodeling, Kitchen Remodeling, Flooring and the list goes on. Customer satisfaction is what determines our success, which is why we take a hands-on approach and keep the customer informed through every phase of the project. When interacting with our company, you'll notice that we're particularly focused on the principles of quality workmanship, timely completion, competitive pricing, and integrity in all our business dealings. We combine knowledge and research with our extensive practical experience to ensure a specialized approach for your renovation needs. Give us a call today!

Avatar for DRS Builders LLC
DRS Builders LLC
New to Angi
Deck, Fence, Patio or Porch - Clean and Seal

Serving Merrimack, NH and surrounding areas

Approved

Free estimates

Small jobs welcome

I have been an active professional in carpentry/construction for 5 years. I take pride in completing high quality work in a timely manner. I am always grateful for all business earned and make sure to take care of the clients property as if its my own and so I am diligent in keeping the work area clean and leaving it clean. The work I can accomplish for you includes framing, interior & exterior trim, decks, window and door installation, flooring and custom wood work. Thanks for your time thus far and look forward to working with you!

1 neighbors recently requested a quote
Avatar for Pynn Carpentry
Pynn Carpentry
New to Angi
Deck, Fence, Patio or Porch - Clean and Seal

Serving Merrimack, NH and surrounding areas

Approved

Free estimates

Warranties offered

Small jobs welcome

I am a framing and finish carpenter based out of Dover, NH. I specialize in door and window replacements, exterior trim and siding repair/replacement, deck and porch construction, and many more. I am young and eager to work for people from all walks of life. I pride myself on being honest and hardworking. I will always give you the best product I can.

5 neighbors recently requested a quote
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Deck Maintenance FAQs, answered by experts

Any wood deck provides some ventilation to the area below, as is the nature of that type of deck design. However, areas that experience excessive humidity and associated moisture benefit greatly from a dedicated ventilation system in the form of strip vents. This addition helps the various wood boards contract and expand evenly throughout the years and reduces the chances of twisting, warping, and buckling.

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.

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.

As with patios, there are many types of deck choices to choose from to add personalization to your home. Some common deck options include:

  • Attached decks are anchored to the home and include simple ground-level options or multi-level structures with stairways and separate landings. 

  • Detached island decks are not attached to the home; they’re a freestanding structure in the yard. 

  • Wraparound decks connect the back of the house with at least one other side and often are built with railings for safety. 

  • Multi-level decks connect your deck through varying levels of elevation, featuring landings that are attached to stairs.

No. In most cases, it’s not colder or freezing temperatures that affect decking materials but the amount of moisture that seeps into the materials as a result. For example, wood decking material is more likely to suffer from rot or decay when exposed to excess moisture from snow or ice. An extreme change in temperature can cause wood to expand or contract, but only if it’s not properly treated beforehand.

The Merrimack, NH homeowners’ guide to deck maintenance services

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