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WI License 092101030 – DC
MN License BC787845
Fully Licensed and Insured

Custom Deck Design and Installation in Wisconsin and Minnesota

Your backyard has been waiting long enough. Krumm Exteriors builds custom decks throughout Wisconsin and Minnesota using premium materials like Trex composite, PVC, cedar, and pressure-treated wood. So you can stop staring through the window and start living outside.

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Taking Outdoor Living To A Whole Other Level

Krumm Exteriors has been building trust across Wisconsin and Minnesota since 1997, and now we’re bringing that same craftsmanship to your backyard. From roofing and siding to full custom deck builds, we do it all with integrity, quality materials, and zero shortcuts. We’re proud Trex technology partners and even prouder neighbors.

Why a Custom Deck is One of the Best Investments You Can Make

A great deck does a lot more than give you somewhere to put the grill. Here’s what you’re really getting:

  • More Home Value: A professionally designed and installed deck boosts curb appeal and resale value. Buyers notice outdoor living space, and appraisers do too.
  • More Living Space: Your deck becomes a natural extension of your home. A place to entertain, relax, and use your yard for something other than mowing it.
  • More Personality: Multi-level layouts, built-in seating, pergolas, and outdoor kitchens. Your deck gets designed around how you live, not a contractor’s template.
  • More Durability: Wisconsin and Minnesota winters are no joke. We build with materials that handle everything from heavy snow to humid summers.

The Benefits of Trex Composite Decking

Trex decking won’t rot, warp, or splinter, and you’ll never spend a weekend painting, sealing, or staining it. No fading, no termites. Just a beautiful, low-maintenance deck that looks great year after year. Which means more time enjoying your backyard and less time working on it.

Turn Your Dream Into Reality with Custom Deck Design

No two homes are alike, and your deck shouldn’t be either. Krumm Exteriors works closely with you from the first conversation to the final board. We tailor every layout, material choice, and design detail to fit your home and how you want to use the space. Whether you’re dreaming of a sprawling entertainment deck or a quiet retreat for two, we make it real.

Deck Renovations and Upgrades

Already have a deck that’s seen better days? We refresh, renovate, and enhance existing structures. Get new railings, lighting, seating, you name it. Sometimes your dream deck is just a few upgrades away.

Deck Installations in Minnesota and Wisconsin

We follow a streamlined process to ensure your deck project is completed efficiently and to the highest standards. Here’s how we take your backyard from “someday” to done:

  1. Initial Consultation: We meet with you to discuss your vision for your new deck, assess your outdoor space, and provide expert recommendations for design and materials.
  2. Custom Design Planning: Our team creates a detailed plan, including 3D renderings if needed, to help you visualize the final result.
  3. Professional Installation: Our skilled workers build your deck with precision, adhering to all local building codes and safety standards.
  4. Final Inspection and Walkthrough: We perform a thorough inspection and walk you through the finished deck to ensure your complete satisfaction.

Deck Installation in Minnesota

From Minneapolis, St Paul, Woodbury, to Stillwater, we bring the same craftsmanship and custom approach to deck builds throughout the Twin Cities metro and surrounding communities.

Deck Installation in Wisconsin

From Eau Claire, New Richmond, Menomonie, to Hudson and everywhere in between, we build custom decks for Wisconsin homeowners who want quality that stands up to every season.

Backed by Trex's 25 year limited residential warranty

Your Deck Comes With Serious Warranty Protection

Your investment is protected on two fronts. Krumm Exteriors stands behind our workmanship, and Trex backs their products with a 25-year limited residential warranty plus an additional 25-year fade and stain warranty. That is serious peace of mind for your outdoor space.

Contractor screwing premium decking boards onto deck

Wood, Composite, PVC, or Cedar: Which Deck Material Is Right for You?

Not sure which material is perfect for your backyard? Here’s a quick breakdown to help you choose:

Wood deck next to light blue house

Pressure-Treated Wood

  • Affordable and durable.
  • Treated to resist decay, insects, and moisture.
  • Can be stained or painted for a customized look.
Composite deck with green grass in the background and aluminum railing

Composite Decking

  • Low-maintenance and long-lasting.
  • Resistant to warping, splintering, and fading.
  • Available in a variety of colors and textures that mimic natural wood.
Cedar Stairs on 4 Season Porch in New Richmond, WI

Cedar Wood

  • Naturally resistant to decay and pests.
  • Offers a classic, rustic appearance.
  • Requires regular sealing for optimal performance.
PVC Decking

PVC Decking

  • Fully synthetic and highly durable.
  • Impervious to moisture and insects.
  • Ideal for areas with heavy exposure to rain or snow.

Deck Project Spotlight

See what’s possible. Here’s a look at some of our recent deck projects across Wisconsin and Minnesota.

A Beautiful Outdoor Upgrade in New Richmond, WI

Krumm Exteriors transformed this New Richmond home by replacing an aging deck with a stunning screened-in porch built for comfort and durability. Pine ceilings, screened panels, and rich wood framing create a warm outdoor retreat, while Norandex Jamestown Blue siding, GAF Pewter Gray roofing, Royal Brown soffit and fascia, and a Leafaway gutter system tie the whole project together seamlessly.

Project Included: Screened-In Porch – RoofingSidingGuttersDeck Replacement

Before After

Lakefront Deck Transformation

This lakefront deck went from dated to jaw-dropping. We re-faced the entire surface with low-maintenance Trex Lineage in Biscayne, upgraded the railings to a sleek 42″ Westbury Bronze system with a drink rail and lighted post caps, and added Andersen 3000 series storm doors for style and efficiency. The result is an outdoor space built for entertaining, unwinding, and enjoying every sunset.

Project Included: Deck – Storm Doors

Your Dream Deck Starts Here

Imagine stepping outside to a space that was built just for you. The perfect spot for morning coffee, weekend cookouts, or just doing absolutely nothing (you’ve earned it). We design and build custom decks across Wisconsin and Minnesota that look great, last long, and fit your life.

Let’s turn that backyard potential into something you’ll use.

Decking FAQs

Start by searching for local deck contractors in your area, asking neighbors for referrals, and checking online reviews. Always verify licenses, insurance, and certifications before hiring anyone.

A well-built deck can last 25 years or more, depending on the materials and maintenance. Composite and PVC decking options tend to outlast traditional wood with far less upkeep, making them a smart choice for Wisconsin and Minnesota homeowners. Trex composite decking, for example, is backed by a 25-year warranty for exactly that reason.

Composite decking typically costs more upfront than pressure-treated wood, but the long-term savings tell a different story. Composite and PVC decks require virtually no maintenance, no annual sealing or staining, and hold up beautifully against Midwest weather.

Maintenance depends entirely on the material your deck contractor installs. Trex composite and PVC decking require minimal upkeep, just an occasional rinse, and you're done. Cedar and pressure-treated wood decks benefit from regular sealing or staining to protect against moisture and UV damage.

Deck installation means building a brand-new deck on your property from scratch. Deck replacement involves removing an existing structure and building a new one in its place. Both are services our deck contractors handle regularly across Wisconsin and Minnesota.

Composite decks require less maintenance and have a longer lifespan, while wooden decks offer a more natural look and lower initial cost. It’s best to consult with a deck installer to determine the best option for your needs.

Most standard deck installations are completed in under a week by our experienced crew. Larger custom deck builds with complex designs, multiple levels, or added features like pergolas or built-in lighting can take two to four weeks. Every project is different, which is why we provide a detailed timeline during your free deck design consultation so you always know what to expect.

Custom deck costs vary based on size, materials, and design features. A basic pressure-treated wood deck sits at a lower price point, while composite or PVC decking with custom railings, lighting, or multi-level designs will increase the investment.

Yes, and they are some of the best in the industry. Krumm Exteriors warrants both our materials and workmanship on every deck project. On top of that, Trex composite decking products come backed by a 25-year limited residential warranty plus an additional 25-year fade and stain warranty.

Plenty. Our deck design and installation team regularly builds in features like custom railings, built-in seating, pergolas, fire pits, outdoor lighting, drink rails, and lighted post caps. If you can imagine it, we can build it.

Absolutely. Multi-level decks are one of the best ways to maximize outdoor living space, especially on properties with sloped terrain or larger backyards.

100%. Custom deck design is literally what we do. Krumm Exteriors tailors every project to your home's architecture, your outdoor space, and your personal style. From material selection and layout to railings, lighting, and finishing details, every decision is yours.

It depends on your material. Trex composite and PVC decking are about as low-maintenance as it gets; an occasional wash keeps them looking sharp year after year. Cedar and pressure-treated wood decks need regular staining or sealing to protect against moisture, UV exposure, and the freeze-thaw cycles common across Wisconsin and Minnesota.

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