If you’ve recently installed a composite or PVC deck in Madison, WI, you’re likely wondering how to protect it during our harsh winters. As local deck builders specializing in composite materials, we’ve helped homeowners across Dane County maintain their decks for years. Here’s our expert guide to winter care — including whether salt is safe for your deck.
How to Remove Snow From Composite Decks in Wisconsin
Wisconsin’s heavy snowfall can be tough on any type of deck, but especially PVC and composite decks (if not handled properly). While these materials are durable and built to last, they’re not indestructible. Following manufacturer recommendations for maintenance is important for ensuring you get the most out of your investment…
Best Tools for Snow Removal on Composite Decks
To remove light snow, use a broom with soft bristles to avoid scratches. For deeper snow (the kind that makes you question why you still live here), choose a plastic shovel. (Metal shovels (including metal strips common on the edges of plastic shovels) might be great for breaking up hard snow / ice on your driveway, but they can easily damage composite boards — especially in freezing temperatures common in neighborhoods like Madison and Appleton.)
Composite decks in Madison, WI after a heavy snowfall.
Why Madison Homeowners Choose Composite Decks
While PVC and composite decks do require a bit of extra care in the winter, there’s a reason they’re still so popular amongst homeowners in Wisconsin… Even if you take the same precautions to carefully remove snow on a wooden deck each year, shoveling still does a number on stain and paint.
The last thing homeowners want to do during their few months of nice weather is spend it re-staining their deck. Instead, when you opt for composite decking, your winter to spring transition becomes a lot easier with a quick clean (more on that below). Plus, composite decking is a gorgeous, long-lasting option that instantly adds value to any home. See examples of composite decks we’ve built in Madison, WI here.
Can You Put Salt on Composite Decking?
Composite and PVC decks aren’t immune to ice, unfortunately. We don’t recommend trying to physically break up the ice. Just like we warned with the metal shovel, you may damage the boards. Instead, use an approved de-icer.
According to TimberTech’s deck installation guide, you should use a calcium chloride ice melt (never rock salts or sand). The latter options can become abrasive and scratch your boards. (Some brands, like Trex, say it’s okay to use rock salts, but we’d rather play it safe.)
Pet-Safe Ice Melt Options for Composite Decks
If you have pets, you may have concerns about salt hurting their paws. Totally fair — we’re right there with you. Most magnesium chloride products (which pet-safe formulas are made with) are perfectly safe for your composite deck as well.
Post-Winter Cleaning Tips for Composite Decks
Regardless of which de-icing products you use throughout the winter, you’ll likely notice salt residue on your boards. Our go-to decking brand, TimberTech, recommends cleaning your PVC and composite once or twice a year (typically spring and fall). Doing so can prevent staining / discoloration from product / nature build up and help your boards look better for longer. If you want a full guide for how to clean your composite deck (including recommended cleaning products & step-by-step instructions), we’ve got you covered.
As you eagerly start using your deck again after a long Wisconsin winter, you may realize it’s not in as good of shape as you remember. As trusted deck builders serving Madison, Appleton, and Green Bay, we’d love to help ensure your deck is safe and sturdy. Contact us today for a free inspection / estimate!
The best ice melts to use on your composite deck during WI winters.
Composite Decks: Winter Maintenance FAQs
Can I use rock salt on my Trex deck in the winter?
While Trex specifically allows rock salts to be used on their composite decking lines, we use a lot of TimberTech and follow their advice to be safe rather than sorry. We recommend using calcium chloride ice melt during Madison, WI winters to protect your deck from scratches and ensure long-lasting beauty.
How often should I clean my composite deck during a Madison winter?
In snowy winters (common for Wisconsin homeowners), you should regularly clear your deck of snow, ice, and debris if for no other reason than to keep your pathways clear and safe. As for salt residue, feel free to sweep away any excess between snowfalls. Otherwise, waiting until spring to thoroughly clean it is completely fine!
Should I cover my composite deck in the winter?
No – composite decks are built to resist moisture and ensure proper drainage. In fact, many decking manufacturers specifically recommend against covering your deck with tarps as it can trap moisture, cause mold, and potentially stain your boards.
Can ice dams damage my composite deck?
Absolutely! While our greater concern would be for leaks in your home, ice dams can also cause large icicles / sheets of ice to form on the roofline above your deck. If these break off onto your deck, they can gouge / damage the composite deck boards. This is why it’s so important to take time each fall to clean your gutters and if you have a history of ice dams, consider using heated gutter/roof cables.
Is composite decking better than wood for snowy winters in Wisconsin?
You bet! PVC and composite decking are built to stand up to the elements year round much better than wood. This means less warping, splintering, and rotting – perfect for Wisconsin’s freeze-thaw cycles!
Does Trex decking require different care than TimberTech in the winter?
Not necessarily. Trex allows rock salt use, but we recommend calcium chloride or magnesium chloride (for those with pets) for all brands to protect your investment. Learn more about the differences between Trex and TimberTech in our Composite Materials Guide.
Can I use a propane heater on my composite deck in the winter?
While extreme temperatures can melt the surface of PVC or composite deck boards, tall propane tower heaters and most fire tables are safe to use. Avoid using fire pits or any heating elements directly on, or less than a few feet from, your decking.
When is the best time to install a composite deck in Madison?
While our exact installation process might change just slightly to account for the temperature, our talented crews build year round. There are pros and cons to each season, but the upside of building your new deck during the winter is that it’ll be ready to enjoy as soon as the weather warms up. Request your free estimate today to get started.
Can I install a composite deck myself to save money?
Composite requires precise spacing and tools. DIY errors can often lead to costly repairs and wasted material — trust our expert Madison deck builders instead.
Do I need a permit to build a deck in Madison, WI?
Generally, yes, but exact requirements depend on the specific Dane County municipality you live in. As a licensed general contractor, we handle all permits for clients in Madison, Appleton, and Green Bay.
What composite deck colors are popular in Madison, WI?
Brown tones (particularly TimberTech’s ‘American Walnut,’ ‘English Walnut,’ and ‘French White Oak’) tend to go really well with our Madison client’s homes. See our gallery of local projects.
How long does a composite deck last in Wisconsin’s climate?
Properly maintained, our TimberTech composite decks last 25-30 years (and come with a stain and fade warranty for that duration as well) — even with Madison’s harsh winters.
How do I find a reliable deck builder near me in Madison?
Look for licensed, insured pros with quality local reviews and clear communication. As Madison’s top-rated deck builders, we serve all of Dane County and would love to provide you with a free quote.
