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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."
Additional Photos
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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

Typically, most residential wooden decks are designed to support approximately 40 pounds per square foot, including the deck’s weight and any items placed on it. While this is fine for typical use, it is usually not enough to hold the weight of a hot tub filled with water and people. To safely support a hot tub, your wood deck will likely require reinforcement. Therefore, it’s best to have a contractor or a structural engineer assess it before hot tub installation.

It is possible to pressure wash your deck, but it’s usually best to leave the work to a professional for two main reasons. First, power washers are expensive, and you can avoid high upfront costs by hiring a deck washing pro instead. Second, you must be careful to use the correct setting to avoid damaging your deck material. You can only clean soft woods like pine with a wide spray and a low pressure; otherwise, the water will leave unpleasant marks on your deck. Hard woods, composite material, and metal can stand up to increasingly higher water pressures.

Deck skirting shouldn’t touch the ground, especially if you have a wood deck, which is vulnerable to moisture. Ideally, you should leave at least 3/4 of an inch of space between the deck skirting and the ground for more ventilation. Pros also recommend that you incorporate about 1 square foot of space for ventilation for the underside of the deck to every 150 square feet of decking. Proper ventilation prevents mold growth and rot that can damage your deck.

A wood deck requires annual cleaning and regular inspections for loose or broken boards, nails, and screws. It should be refinished by applying a stain or sealer every two to three years to protect the wood from water damage, rot, mildew, and sun fading. The exact frequency can depend on the climate and the deck's exposure to sun and moisture. If your deck is painted, it will need repainting approximately every 10 years. Signs that your deck needs refinishing include faded, splintering, or warping boards.

Yes, pressure washing a wood deck can be a good idea as it effectively lifts ingrained dirt, mold, and mildew, improving the deck's appearance and longevity. However, it must be done carefully, as it's easy to damage the wood, especially softwoods. To pressure wash safely, use a lower pressure setting and a wide, 40-degree fan pattern nozzle (often white). Keep the nozzle at least a foot away from the wood surface and maintain constant motion, avoiding hovering in one spot to prevent gouging.

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.