Should You Seal Your Concrete Driveway or Patio in Spokane? Sealers, Deicers and Your New Concrete's First Winter (2026)

Short answer: yes, sealing a concrete driveway or patio in Spokane is worth it, but timing matters more than the brand. Our winters bring months of freezing nights, and freeze-thaw cycles plus deicing salt are what flake the surface off exterior concrete. A breathable silane or siloxane penetrating sealer, put on when the concrete is dry, cuts down how much water and salt soak in. New concrete needs extra care its first winter, starting with no deicers at all.

Why Spokane concrete scales

Scaling is the flaking or peeling of the top layer of hardened concrete. The National Ready Mixed Concrete Association (NRMCA) and the Michigan Concrete Association explain it the same way:

• Water gets into the surface, freezes, expands and pushes the top layer apart
• Deicing chemicals make it worse, because they keep the surface wetter and add more freeze-thaw cycles
• Poor drainage adds to it. Water or salty slush that sits on a slab, like the plow berm at the end of a driveway, keeps the concrete saturated

Spokane is a textbook freeze-thaw climate. NOAA's 1991–2020 normals for Spokane International Airport show average monthly lows below freezing from November through March, so exterior concrete goes through that cycle every winter.

Should you seal a concrete driveway or patio?

For most Spokane driveways, patios, walks and garage aprons, yes. Here's what the industry guidance says:

• NRMCA's "Scaling Concrete Surfaces" sheet lists sealing as one of its rules to prevent scaling, and recommends a commercially available silane or siloxane-based breathable sealer or water repellent made for concrete slabs
• The Pennsylvania Aggregates and Concrete Association says silane and siloxane penetrating sealers give the highest resistance to deicer and freeze-thaw damage
• A sealer doesn't fix bad concrete. A federal deicer guidelines report notes that sealers don't replace a durable mix and good curing. They add protection on top of it

That's why we pour exterior flatwork with an air-entrained mix. NRMCA calls for 6 to 7% air in severe freeze-thaw exposure with 3/4-inch or 1-inch aggregate, and about 4,000 psi concrete where deicers will be used.

Which sealer to use

The federal report sorts concrete sealers into three families:

• Water repellents (silanes and siloxanes): soak into the pores and make them shed water. This is the type NRMCA and PACA point to for driveways and patios, and it doesn't change the look much
• Pore blockers (resins, linseed oil): soak in and plug the pores. NRMCA mentions a 1:1 boiled linseed oil and mineral spirits mix as an option, but warns it darkens the concrete
• Barrier coatings (epoxies, urethanes, acrylics): sit on top as a film. These are what you'd see on garage floors or as a wet-look finish on stamped concrete, and they're a different job from protecting a driveway from salt

Whatever you pick, follow the manufacturer's directions for temperature, dryness and how often to reapply. NRMCA says the concrete should be reasonably dry before sealing and calls late summer the ideal time to apply it.

When to seal new concrete

• Not right away. The Michigan Concrete Association says not to seal freshly placed concrete, because sealing traps water in the slab and keeps it saturated during freeze-thaw weather
• Let it dry first. A federal guidelines report cites an absolute minimum of 30 days of drying before new concrete sees deicing chemicals, and longer for mixes with fly ash or slag
• Late-season pours wait until spring. Concrete Alberta's guidance for slabs poured late in the fall is to apply a high-quality sealer in the spring. If we pour your driveway in October or November, plan on sealing it in spring or late summer

Your new concrete's first winter

This is where most of the spring damage starts. NRMCA, PACA, the Michigan Concrete Association and Concrete Alberta all give the same advice:

• No deicers the first winter. PACA puts it plainly: don't use deicers on concrete less than one year old. Use clean sand for traction instead
• Hose off salt your car drags in. Road salt that drips off vehicles onto a new driveway or garage slab does the same damage, so rinse it off when the weather allows
• Don't let snow pile up. Snow and ice left sitting on a slab keep it saturated through freeze-thaw cycles

Deicers after the first year

Once your concrete is past its first winter:

• Go easy. Use deicers sparingly, and shovel or sweep up the leftover slush once it melts
• Read the label. PACA says sodium chloride and calcium chloride deicers are generally considered acceptable on good-quality, dense concrete, while magnesium chloride, potassium chloride, calcium magnesium acetate, urea, ammonium sulfate and nitrogen salts have caused much higher rates of deterioration
• Never use ammonium sulfate or ammonium nitrate. NRMCA and PACA both say they're aggressive enough to destroy a concrete surface. That includes some fertilizers
• Guidance varies on calcium. The Michigan Concrete Association goes further and says to avoid calcium and magnesium-based deicers and use plain sodium chloride (rock salt) in moderation. When in doubt, use sand

Spokane sidewalks: you still have to clear them

Skipping salt doesn't mean skipping snow removal. Inside the City of Spokane, Spokane Municipal Code 12.02.010 requires owners and occupants to keep the sidewalk next to their property, including corners, clear of snow and ice. The City asks for a 36-inch path cleared by 9 a.m. after a snowfall, and the code says snow from your property can't be pushed into the street. On new concrete, that means shoveling early and often and using sand for traction.

What Raven does to help your concrete last

• Air-entrained mixes for driveways, patios, walks and RV pads
• A compacted gravel base and slope away from the house so water drains instead of sitting
• Saw-cut control joints to manage cracking
• Proper curing, and in cold weather the protection covered in our winter concrete guide

If your driveway is already flaking, our driveway repair vs. replacement guide walks through your options. Planning a new patio? Our concrete patio cost guide has our current per-square-foot rates.

Get a concrete quote

Call 509-350-2016 or request a free quote for a new driveway, patio, walkway or slab anywhere in the Spokane area. See our concrete flatwork services.

Sources

• NRMCA, CIP 2 Scaling Concrete Surfaces
• Pennsylvania Aggregates and Concrete Association, Protecting Concrete From Deicer Damage
• Michigan Concrete Association, Cold Weather Concreting (owner care, first winter)
• Michigan Concrete Association, Preventing Scaling of Concrete Surfaces
• Concrete Alberta, Cold Weather Concrete Reminders
• The Deleterious Chemical Effects of Concentrated Deicing Solutions on Portland Cement Concrete, Guidelines (U.S. DOT repository)
• NOAA NCEI 1991–2020 Monthly Normals, Spokane International Airport
• Spokane Municipal Code 12.02.010, Snow Removal, Owner and Occupant Duties
• City of Spokane, Street Snow Removal