Concrete Sealing & Waterproofing in Phoenix, AZ | DnD Epoxy Flooring

1Types of Concrete Sealers — Which One Does Your Surface Need?

Not all concrete sealers are the same — and using the wrong type is the most common reason sealers fail. We recommend and apply three primary sealer categories, each suited to specific surface types and performance requirements.

• Penetrating sealers (silane/siloxane) — soak into the pores, invisible finish, breathable, ideal for driveways and plain concrete; last 8–15 years
• Acrylic sealers — topical film-forming, enhances color and sheen, protects stamped concrete and decorative surfaces; last 3–5 years before recoat
• Polyaspartic/polyurea sealers — highest performance topical, maximum chemical and UV resistance, glossy or satin finish, rated for pool decks and high-traffic areas; last 10–20 years
• Epoxy primer + polyaspartic topcoat — two-component system for maximum adhesion and protection on heavily used surfaces
• Water-based vs. solvent-based — we select based on the surface, porosity, and your finish preference
• Anti-slip additives — included on all horizontal exterior surfaces as standard

2The Prep Process — Why Most Sealer Jobs Fail

Walk into any big box store and you can buy a concrete sealer for $40. The sealer isn't the problem. The problem is what happens before the sealer goes down — or what doesn't happen. Concrete sealing failure is almost always a prep failure. DnD won't cut corners on prep, because our name is on the job.

• Surface cleaning — pressure washing alone is not enough for contaminated concrete
• Degreasing — oil, grease, and tire marks chemically bond to concrete and must be treated before sealing
• Diamond grinding or mechanical prep — opens concrete pores for penetrating sealers; creates profile for topical adhesion
• Existing sealer removal — old sealers must be stripped before reapplication or new sealer won't bond
• Crack repair — every crack treated before sealing to prevent moisture infiltration behind the coating
• Moisture testing — slab moisture above threshold causes topical sealers to blister and delaminate
• pH testing — contaminated concrete from cleaning chemicals requires neutralization before coating

3Concrete Sealing for Every Surface Type

Different concrete surfaces face different challenges. We match the sealer system to the specific demands of each surface — no one-size-fits-all approach.

• Stamped concrete patios — acrylic or polyaspartic enhancers that deepen the color and protect the texture
• Plain concrete patios — penetrating waterproofer or low-sheen topical sealer
• Driveways — heavy-duty penetrating silane/siloxane or polyurea rated for vehicle traffic and hot tires
• Pool decks — chlorine-resistant, non-slip topical sealer engineered for constant wet exposure
• Exposed aggregate — specialty sealers that preserve the texture while blocking water and staining
• Decorative overlays — compatible topcoat systems that protect the overlay without clouding or discoloring
• Saltillo and tile patios — specialty sealers for porous natural materials (not concrete, but we handle these too)
• Interior polished concrete — densifier + topcoat system for living areas and commercial floors

4Why Sealers Fail — And How We Prevent It

We've been called to fix failed sealer jobs more times than we can count. The patterns are always the same. Understanding failure modes is how we prevent them on your property.

• Peeling and flaking — almost always caused by applying over existing sealer, moisture, or contamination
• Whitening or hazing — moisture trapped under a topical sealer during or after application
• Bubbling — outgassing from concrete applied too thick or in direct sun without temperature management
• Uneven sheen — inconsistent application over rough or poorly prepared concrete
• Premature wear — water-based acrylic applied without primer on high-traffic surfaces
• Color change or darkening — using a solvent-based sealer on concrete not prepared for it
• DnD's prevention: proper prep every time, product matched to surface, applied in correct conditions

5Maintenance — How to Make Your Sealed Concrete Last

A properly sealed surface is easy to maintain. The goal is to extend the life of the sealer so re-application is years away, not months.

• Clean with pH-neutral cleaner only — acidic or alkaline cleaners degrade sealer chemistry over time
• Avoid harsh degreasers on acrylic-sealed surfaces — use purpose-made concrete degreasers
• Reapply acrylic sealers every 3–5 years (or when water stops beading on the surface)
• Penetrating sealers typically need re-application only every 8–15 years
• Address cracks quickly — a crack in sealed concrete is an entry point for water under the seal
• Annual inspection — check for delamination, cracking, or wear areas before they become problems
• DnD offers maintenance recoat services — no need to strip and start from scratch with compatible systems

Serving All of Arizona Metro & Tucson

DnD Epoxy Flooring serves homeowners and businesses throughout Phoenix, Mesa, Chandler, Gilbert, Scottsdale, Tempe, Glendale, Peoria, and the entire Arizona metro — including Tucson & Pima County. Whether you're in Desert Ridge, Ahwatukee, Arcadia, Biltmore, or anywhere in between — we come to you.