🛡️ CONCRETE SEALING
Concrete Sealing in Como, CO
Sealing concrete in Como isn't a luxury upgrade — it's the single highest-return maintenance investment a Park County property owner can make on their flatwork. Without a sealer, concrete at 9,800 feet is directly exposed to intense UV radiation, mag chloride from county roads, and dozens of freeze-thaw cycles each winter that work water into every pore and microcrack. Concrete Doctor has been sealing and protecting concrete across Colorado's mountain communities since 1994, matching sealer type to the specific exposure conditions each property faces.
Westcoat Systems PartnerFamily-Owned Since 199430+ Years ExperienceFree Estimates
Como's high-altitude basin creates an unusually aggressive environment for unsealed concrete. The UV index at South Park elevations is meaningfully higher than at sea level, and year-round — even on overcast winter days, UV penetrates at levels that accelerate the oxidation and surface breakdown of unprotected concrete paste. This manifests as surface dusting, color fade on decorative or colored concrete, and a powdery surface condition that makes cleaning difficult and invites staining.
Magnesium chloride is the other major threat. Colorado's mountain roads are treated heavily with mag chloride as a primary de-icer, and Park County roads including the routes into Como are no exception. This chemical is far more concrete-aggressive than sodium chloride: it reacts with the calcium hydroxide in concrete to form expansive compounds that physically disrupt the surface from within. Sealing prevents the chemical from ever penetrating the surface layer, which is a fundamentally different — and more effective — protective mechanism than trying to remove or neutralize it after contact.
Our Concrete Sealing Approach
Concrete Doctor's sealing work begins with thorough surface preparation — cleaning, pressure washing, and addressing any existing surface damage before any sealer is applied. Sealing over dirty, scaled, or damaged concrete traps problems under the film and produces a shorter-lived result. We also evaluate whether any existing sealer or coating is present, since new product applied over incompatible older material can fail at the interface rather than performing as intended.
Sealer selection is driven by the application: penetrating silane-siloxane sealers for exterior flatwork that needs vapor-open protection without altering appearance; acrylic sealers for decorative or stamped concrete where a slight sheen and color enrichment are desired; and polyurethane or epoxy-modified sealers for high-traffic applications where surface abrasion resistance is a priority. For Como's outdoor flatwork, we typically recommend penetrating sealers as the baseline — they work from inside the concrete rather than forming a surface film, which means they're not subject to peeling, flaking, or the traction issues that film formers can create on icy outdoor surfaces.
Penetrating Sealers and Why They're Often the Best Fit for Como Driveways
Film-forming sealers — acrylics, polyurethanes, and similar surface coatings — sit on top of the concrete and provide a visible barrier. They work well in protected or interior locations but carry a real limitation for outdoor applications in freeze-thaw climates: moisture vapor from below the slab can build pressure under the film and cause it to blister or peel, and the film itself can become slippery when wet or icy. On a Como driveway that sees winter conditions, a slick surface coating creates a safety concern.
Penetrating silane-siloxane sealers solve this by working inside the concrete rather than on top of it. They react with the cement paste to form a hydrophobic lining inside the pores, causing water to bead off rather than absorb in — without sealing the slab against vapor transmission. The result is a surface that looks essentially unchanged, sheds water and mag chloride effectively, and doesn't create a slip hazard. For outdoor flatwork in Como's conditions, this technology is usually the right starting point.
How Often Should Concrete Be Resealed in a Mountain Environment?
Sealer longevity in Como is shorter than the product labels suggest because those labels are written for average conditions — not for high-UV, high-freeze-thaw, high-chemical-exposure mountain environments. A penetrating sealer that performs for 5-7 years at lower elevation may need refreshing at 3-4 years in Como. Film-forming sealers degrade even faster under the UV load at South Park's altitude.
The practical indicator for resealing is the water bead test: pour water on the surface and watch whether it beads and rolls off or soaks in. When water absorbs readily rather than beading, the sealer has been depleted and the surface is unprotected. Concrete Doctor can assess sealer condition as part of any site visit and advise on whether resealing alone is sufficient or whether light surface preparation should accompany the resealing work.
Serving Como, CO Since 1994
Fresh concrete sealing, resealing after previous sealers have worn, and protective treatment of decorative surfaces are all within Concrete Doctor's regular scope in the Park County and Como area. We're a family-owned operation that's been doing this work in Colorado mountain communities since 1994, and we're straightforward about what a property needs — and what it doesn't. Call (303) 988-2558 to schedule a free assessment.
Frequently Asked Questions
New concrete should cure for a minimum of 28 days before sealing — the hydration chemistry needs time to complete before any sealer is applied. Applying too early can trap moisture and interfere with the curing process. For properties in Como that experience early fall freezes, timing a late-summer pour to allow full cure before the first hard freeze is ideal.
If the stamped concrete is structurally sound and the surface hasn't physically scaled, resealing with an appropriate acrylic or urethane sealer can significantly restore color depth and surface sheen. The existing sealer needs to be assessed first — if it's failed, cracked, or incompatible with the new product, it should be stripped before resealing. We evaluate existing sealer condition during the estimate.
Sealing protects the concrete surface from chemical and moisture attack but doesn't prevent cracks caused by subgrade movement or thermal stress — those forces are mechanical and originate below or within the slab. However, a sealed slab is more resistant to freeze-thaw-driven crack propagation because water doesn't penetrate as deeply, so the ice-expansion pressure inside micro-cracks is reduced. Sealing is best understood as one layer of a comprehensive maintenance approach.
Most penetrating and film-forming sealers have application temperature minimums in the 40-50°F range and require the surface to be dry. In Como, fall application windows can be narrow given the early onset of freezing temperatures at elevation. We plan sealing work with this constraint in mind and won't apply product in conditions that compromise cure. Late summer or early fall — before nighttime lows drop consistently below 40°F — is the preferred window for exterior sealing in Park County.
Last updated: June 2026
Need Concrete Sealing in Como, CO?
Get a free on-site estimate from Concrete Doctor — repair first, replacement only when necessary.
Repair first. Replacement only when necessary.