Serving Northern Utah for Nearly 40 Years
Protect the living space, garage, or patio underneath your deck from water damage.
If you have a deck over a finished room, a balcony above a living space, or a rooftop patio over a garage, that deck is doing double duty. It is your outdoor living space on top and a roof for whatever is below. The problem is that traditional decking materials, whether wood planks or composite boards, are not designed to keep water out. They have gaps between the boards. Water goes straight through.
That might be fine on a ground-level deck with nothing but dirt underneath. But when there is a room, a garage, or any finished space below your deck, every drop of water that gets through is a problem. Not today, maybe. But over months and years, it adds up.
Water is patient. It does not need a flood to cause damage. A little bit of moisture getting through your deck after every rain, every snowmelt, every spring thaw, that is enough. The wood framing underneath stays damp. Joists start to rot. Mold grows in places you cannot see. The ceiling in the room below stains, and eventually the drywall softens and leaks through.
By the time you notice water stains on the ceiling or a musty smell in the room, the structural damage is already significant. We have seen decks where the framing was so deteriorated it needed to be completely rebuilt because nobody realized water had been getting in for years. That is a much bigger project and a much bigger bill than waterproofing the deck surface in the first place.
Think about a typical Northern Utah winter. Snow accumulates on your deck and sits there for days or weeks. It melts during the day, refreezes at night, and melts again. That freeze-thaw cycle repeats all winter long, and every time the snow melts, water is looking for a way down. With traditional decking, it finds one easily.
Spring is even worse. The big melt dumps weeks of accumulated snowpack across your deck surface all at once. Canyon winds dry the top surface quickly, so it looks fine from above, but underneath, the framing is saturated. You cannot see the damage happening, and by the time it shows up inside your home, the repair bill has multiplied.
Waterproof decking stops this cycle at the source. Water hits the membrane surface and drains to the edges instead of soaking through to the structure below. Your framing stays dry. Your rooms stay dry. And you avoid the kind of hidden damage that gets expensive in a hurry.
We install waterproof decking anywhere the space below the deck needs to stay dry. The most common applications we see:
Second-story decks over living spaces. This is the most common reason people call us. The master bedroom, family room, or home office is directly below the deck, and water is getting in. A waterproof membrane solves it permanently.
Balconies on multi-level homes. Especially common in hillside construction along the Wasatch Front, where homes are built into slopes and upper-level balconies sit over lower rooms.
Rooftop patios on flat sections. Some homes have flat roof areas that work well as outdoor living space, but only if they are properly waterproofed first.
Garage roof decks. You want usable outdoor space on top of the garage without worrying about leaks into the bay below. Waterproof decking gives you both.
Waterproof decking uses a vinyl membrane that gets permanently adhered and heat-welded to a smooth plywood substrate. The membrane creates a continuous, sealed surface with no gaps, no fastener holes, and no seams that can separate over time. Where multiple sheets meet, they are heat-welded together so the entire deck becomes one watertight surface.
The edges get finished with PVC metal flashings that lock the membrane down and direct water away from the structure. Proper slope ensures water moves to the edges and drains off the deck rather than pooling.
The finished surface looks like a deck, not a rubber roof. Modern waterproof membranes come in a range of colors and patterns including wood grain and stone looks. You get a functional outdoor living space that also happens to be completely waterproof. For details on the specific product we use, see our TufDek product page.
You might wonder why a roofing company installs decking. The answer is simple: waterproof decking is a roofing application. The membrane is roof-grade PVC. The installation techniques, heat welding, flashing details, slope management, and drainage, are all roofing skills. A deck builder knows how to build frames and lay boards. A roofer knows how to make a surface waterproof and keep it that way for decades.
We bring the same installation standards we use on our residential roofing and commercial roofing projects to every deck we waterproof. The details matter, and those details are what we do every day.
Bob Harvey is a third-generation roofer who learned the trade from his father, who learned it from his father. The company has been family-owned since 1988, and every crew member is a W-2 employee trained by us, insured by us, and accountable to us. We do not use subcontractors. When you hire Bob Harvey Roofing, you get the same crew that has worked together job after job across Davis County, Weber County, and Northern Utah.
We are not the cheapest option. We are not the fastest talker. We are the company that shows up, tells you the truth about your roof, and lets you make the decision on your own timeline. That is what nearly 40 years in business has taught us works.
We have waterproofed decks on homes throughout Davis and Weber Counties, from second-story decks in Kaysville and Layton to hillside balconies in Bountiful and Ogden. As a CertainTeed ShingleMaster Premier Contractor and authorized TufDek dealer, we hold the certifications that back up what we install.
"Their bid for a Duro-Last Roof was reasonable and they did great work. I would gladly recommend them to others."
Every project is tailored to your deck, but here is what goes into a typical installation.
We inspect the substrate, framing, and drainage before recommending a solution.
Plywood replacement or overlay to create a smooth, dry surface for the membrane.
Vinyl membrane permanently adhered to the deck surface with proprietary adhesive.
Seams fused together for a continuous, watertight surface with no gaps.
PVC metal flashings at all edges for permanent waterproof protection.
Proper slope and drainage so water moves off the deck, not into the structure.
Site cleaned up and final walkthrough with you before we leave.
Manufacturer warranty on the product plus our workmanship warranty on the labor.
What homeowners want to know about waterproof decking.
If your deck is over a living space, a garage, a patio, or any area you want to keep dry, traditional decking will not protect it. Wood and composite decking have gaps between the boards. Water goes straight through. In Utah, snowmelt can sit on your deck for weeks during winter, and all that water is finding its way into the structure below. Over time, that causes rot in the framing, stains on ceilings, and structural damage that gets expensive to fix. Waterproof decking creates a sealed surface that routes water to the edges where it drains properly instead of soaking through.
Any deck where there is something underneath that needs to stay dry. The most common are second-story decks over finished rooms or living spaces, balconies on multi-level homes, rooftop patios on flat sections of the house, and garage roof decks where you want usable outdoor space on top without leaks into the bay below. If you have a ground-level deck with nothing underneath, you do not need waterproof decking. But if there is structure below, waterproofing is not optional. It is protection.
It depends on the size of the deck, the condition of the substrate underneath, and how much prep work is needed before the membrane goes down. Waterproof decking costs more than traditional decking materials up front, but when you factor in the cost of repairing water damage to the room or garage below a leaking deck, most people find it pays for itself quickly. We give free estimates so you can see exactly what your specific project would cost.
Traditional decking, whether wood or composite, is designed as a walking surface. It is not waterproof. There are gaps between the boards for drainage, and water passes straight through to whatever is below. Waterproof decking uses a vinyl membrane that is permanently adhered and heat-welded to the deck substrate. There are no gaps, no seams that can separate, and no way for water to get through. It functions like a roof while still looking and feeling like a finished deck surface.
It depends on what is there now. Waterproof vinyl membranes need a smooth, dry plywood substrate. If your existing deck provides that, we may be able to work with it. If the surface is planks with gaps, or if the plywood underneath is damaged, we will need to replace or overlay the substrate first. We evaluate every deck individually during the free estimate and tell you exactly what prep work is needed.
We are an authorized TufDek dealer. TufDek is a roof-grade PVC vinyl membrane manufactured by Tuff Industries. It is the strongest waterproof vinyl decking system on the market, with a 15-year manufacturer warranty and over a dozen color and pattern options. We chose TufDek because the product performs and the warranty is real. You can learn more on our TufDek product page.
Straight talk about roofing from people who actually do the work.
Let us take a look and give you an honest answer about what it will take to fix it permanently.
Get a Free Estimate (801) 544-5125