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

Avatar for Advance Window cleaning and Power Washing
Advance Window cleaning and Power Washing
4.7(
14
)
Deck, Fence, Patio or Porch - Clean and SealDeck, Fence, Patio or Porch - Clean and Seal - For Business

Serving Merrimac, WI and surrounding areas

In business since 2018

Free estimates

Emergency services offered

"I was very happy with Advance Cleaning’s work. I had water coming into my basement after a lot of heavy rainfall, so I knew I needed to deal with my gutters. Yanks was very responsive, scheduling was quick and easy, and he and his associate were on the job very fast! They worked nonstop on a very hot day and made sure all the downspouts were flowing freely before they finished. Everything works and looks really great after their work."
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+36

Recommended by100%of homeowners
Avatar for RENEWDECK LLC
RENEWDECK LLC
3.7(
3
)
Deck, Fence, Patio or Porch - Clean and SealDeck, Fence, Patio or Porch - Clean and Seal - For Business

Serving Merrimac, WI and surrounding areas

In business since 2024

Free estimates

Offers commercial services

Renewdeck LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

project photos
Avatar for Work Horse Remodeling LLC
Work Horse Remodeling LLC
5.0(
3
)
Deck, Fence, Patio or Porch - Clean and SealDeck, Fence, Patio or Porch - Clean and Seal - For Business

Serving Merrimac, WI and surrounding areas

In business since 2022

Free estimates

"I had my old deck removed and new deck built. Luke was Very Easy to get along with. He listened and was receptive to my ideas and changes last minute. The area was cleaned up and old wood taken away. I will definitely hire him for future projects!!!"
Kitchen Remodel
Decks & Porches Project
Kitchen Remodel
Decks & Porches Project
Kitchen Remodel

+19

Recommended by100%of homeowners
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Deck Maintenance FAQs, answered by experts

Always sand a deck before repainting so the wood is smooth and ready for paint. While you do not need to fully remove paint before repainting, sanding helps remove any areas with weather and sun damage. Sanding also helps remove chipped or flaking paint and opens the wood pores to improve paint adhesion.

Rot loves moisture, so deck rot typically impacts the parts of a board that stay wet. This includes the underside of boards, in addition to support posts and joists. However, any part of a board can rot, given the right conditions. 

No, termites do not eat Trex or any other composite decking brand. Termites eat cellulose, of which composite decking like Trex contains very little compared to natural wood. This feature can help justify the higher Trex decking costs if you live in an area with abundant termites.

Most building codes require that spindles or balusters on deck and stair railings be spaced no more than four inches apart. This safety standard, often called the '4-inch sphere rule,' is designed to prevent small children or pets from slipping through the railing. A good way to visualize this is that a 4-inch sphere should not be able to pass between two spindles. For the same safety reason, the space between the bottom rail and the deck floor 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 crucial to check your local building codes to ensure compliance before starting your project.

Building codes for deck railings can vary by location, so it's important to consult your local regulations before construction. Generally, a guardrail is required for any deck that is more than 30 inches above the ground.

For residential properties, the standard minimum height for a deck railing is 36 inches. However, some states and municipalities have stricter requirements; for example, California and Washington mandate railings that are at least 42 inches high. Therefore, a 42-inch railing is not considered too high and may be required in your area or chosen voluntarily for additional safety.

In addition to height requirements, codes also specify other safety features, such as the maximum spacing between balusters to ensure they are close enough to prevent a child from squeezing through.

The Merrimac, WI homeowners’ guide to deck maintenance services

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