🛡️ CONCRETE SEALING
Concrete Sealing in Broomfield, CO
Sealing concrete is the single highest-leverage maintenance action a Broomfield property owner can take. A properly chosen and applied sealer blocks the two primary damage mechanisms — water infiltration and de-icing salt penetration — before they get started. Concrete Doctor has sealed exterior flatwork, garage floors, and commercial slabs across the Denver metro since 1994, and we've watched the properties we've sealed regularly hold up dramatically better than neighboring concrete left unprotected through Colorado's winters.
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Concrete Sealing for Broomfield, CO Properties
At 5,400 feet on the Jefferson County plains, Broomfield concrete faces a UV radiation load that is meaningfully higher than lower-altitude environments. That UV exposure degrades both concrete surfaces and any sealer products that are not formulated for high-altitude conditions. Film-forming sealers that work well in lower states can chalk and peel within a single Colorado season if they're not UV-stabilized. Penetrating sealers that chemically react with the concrete matrix rather than forming a surface film generally outperform film-formers in Colorado's UV environment, particularly for exterior driveways and patios.
The de-icing salt situation in Broomfield is severe. Magnesium chloride applications on Wadsworth Boulevard, Sheridan Boulevard, and Broomfield's residential streets coat vehicle undercarriages and get tracked onto driveways and garage floors with every trip. On unsealed concrete, chloride ions penetrate the paste matrix, attack calcium hydroxide crystals, and accelerate the scaling that turns smooth concrete into a pitted, rough surface. A quality penetrating sealer applied to clean, dry concrete dramatically reduces chloride ion mobility in the surface layer, protecting the paste chemistry from this attack for years before reapplication is needed.
Our Concrete Sealing Approach
Concrete Doctor's sealing services begin with a surface assessment and preparation stage that often gets skipped by contractors who just roll on sealer over dirty or contaminated concrete. Existing sealers that have failed, chalked, or delaminated must be chemically stripped or mechanically removed before a new sealer will bond properly. Oil and chemical stains on garage floors and driveways require pre-treatment. Efflorescence on exterior concrete needs to be neutralized. Only after the surface is clean, dry, and properly prepped does the sealer application provide the protection it's rated for.
For exterior driveways, patios, and walkways in Broomfield, we typically recommend penetrating silane-siloxane sealers that chemically react with the concrete to form a water-repellent barrier within the surface matrix. These sealers don't change the appearance of the concrete, allow vapor transmission (important for preventing trapped moisture), and have 5 to 10 year service lives in Colorado conditions before reapplication. For stamped or colored decorative concrete, we use UV-stable film-forming sealers that enhance color and provide surface protection while tolerating Colorado's intense solar exposure. For garage floors and commercial slabs that have already received a coating system, the topcoat sealer is integrated into the coating installation.
Penetrating Sealers vs. Film-Forming Sealers — Choosing Right for Colorado
The sealer market is full of products that look similar but perform very differently in Colorado's specific climate. The two main categories are penetrating (reactive) sealers and film-forming (topical) sealers, and the right choice depends on the concrete surface type, its current condition, and what you're protecting against.
Penetrating silane-siloxane sealers are the workhorse for exterior concrete in Broomfield — driveways, sidewalks, patios, and steps. They soak into the concrete, react with calcium hydroxide in the cement paste to form a hydrophobic crystalline structure, and provide water and chloride repellency from within the slab rather than sitting on top of it. Because they don't form a surface film, they won't peel, chalk, or trap moisture. They also tolerate Colorado's UV without degrading. Film-forming sealers — acrylics, polyurethanes, and epoxies — are better suited for decorative concrete where gloss enhancement or color depth is part of the goal, and for interior garage and basement floors where the application conditions are more controlled.
When to Seal New vs. Existing Concrete in Broomfield
New concrete installations should cure for a minimum of 28 days before sealer application — the concrete needs to reach adequate compressive strength and moisture levels before a penetrating sealer can properly react with the matrix. Applying sealer too early traps moisture and can prevent proper curing of the concrete itself. For freshly poured Broomfield flatwork, we recommend scheduling sealing in the late spring or summer after a winter pour, or several weeks after a summer pour.
Existing concrete benefits from sealing at any stage, though the preparation requirements increase as the concrete ages and accumulates contamination. A Broomfield driveway that has scaled and pitted but never been sealed will require light surface cleaning and possibly a concrete cleaner/degreaser treatment before sealing. One that has old, failed sealer on it needs that removed first. Concrete that has active cracks should have those repaired before sealing so the sealer can protect a continuous surface. Concrete Doctor handles all of this as an integrated service — not just a spray-and-go application.
Serving Broomfield, CO Since 1994
Sealing Broomfield concrete — whether it's a fresh installation or a 20-year-old driveway that's never been sealed — is one of the most cost-effective ways to extend the life of flatwork that would otherwise require resurfacing or replacement in a few years. Concrete Doctor serves the Broomfield area regularly from our Lakewood base and can combine sealing with crack repair or light surface preparation work in a single visit. Call (303) 988-2558 to schedule a free assessment and find out which sealer system makes sense for your specific concrete surfaces.
Frequently Asked Questions
Penetrating silane-siloxane sealers on exterior concrete in Colorado typically maintain effective water repellency for 5 to 10 years before reapplication. You can do a simple water bead test — pour a cup of water on the concrete and watch whether it beads and rolls off (sealer still active) or soaks in quickly (sealer depleted). Film-forming sealers on decorative or interior concrete may need reapplication every 2 to 5 years depending on traffic and UV exposure.
Penetrating sealers for exterior concrete leave the appearance essentially unchanged — the concrete looks the same color and texture, just with better water beading. Gloss-finish film-forming sealers will add a sheen to the surface. We'll show you what the product looks like on your specific concrete before applying so there are no surprises.
Old or failed film-forming sealers often leave a white, hazy, or peeling residue that looks worse than bare concrete. Chemical strippers can remove most film-forming sealers without damaging the underlying concrete. After stripping and cleaning, a fresh sealer application restores protection and improves the appearance. We assess the existing sealer type during the estimate to select the right removal chemistry.
No — sealing prevents water infiltration and de-icing salt damage, which are significant contributors to surface scaling and crack propagation, but it does not prevent cracks caused by subgrade movement, slab settlement, or structural loading. Sealing is best thought of as a preventive maintenance measure that slows deterioration rather than a structural repair. For active cracks, repair comes first, then sealing.
Last updated: June 2026
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Repair first. Replacement only when necessary.