Paint & Color · Floor coatings/What to know about floor coatings

What to know about floor coatings

Compare coating types, prep your concrete and figure out how much you need.

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Local experts in Delray Beach

Floor coatings are one of the trickiest paint jobs

Peeling, bubbling, hot-tire lifting and slippery floors are common — and almost always avoidable. Most failures come down to the wrong product, poor prep, or rushing the application and cure. This overview walks you through what to know before you start.

4 keys to a floor that lasts

Hire someone who knows floors

An experienced pro has the grinders, testers and know-how — and has seen what goes wrong.

Choose the right product

Match the coating to the surface, the traffic, sun exposure and what's already down.

Prep it properly

Clean, test, remove what won't hold, repair cracks and profile the concrete so the coating can grip.

Apply it right — and let it cure

Right temperature, right thickness, right recoat window, and full cure time before cars or furniture.

What to consider before you start

What's on the floor now?

Bare concrete, pavers, old paint, sealer, epoxy, stain or tile adhesive all behave differently.
Water-based products often won't stick over solvent-based or epoxy coatings — and some coatings lift the ones under them.
Bring a photo or a chip to the counter and we'll help identify it.

How to test what's down

Water drop: if it beads, there's a sealer or coating; if it soaks in and darkens, it's bare.
Scratch or tape test: scratch an X, press tape on and pull — if coating comes up, it's not holding.
Solvent rub: a rag with xylene or lacquer thinner softening it points to an acrylic or solvent coating.
Moisture: tape a plastic square down for 24 hours. Darkening or droplets underneath means moisture problems.

Remove it or coat over it?

Coat over only if the old coating is well bonded, clean, compatible and sanded dull.
Remove it if it's peeling, flaking, bubbling, chalky, or a different chemistry than the new product.
When in doubt, test a small patch first and let it cure before doing the whole floor.

Equipment to remove coatings

Floor grinder with diamond tooling — the standard for removing epoxy and profiling concrete.
Shot blaster — fast removal and profile on large commercial floors.
Chemical strippers and a scraper for small areas or thin acrylics.
Pressure washer for cleaning, not removal — and a HEPA vacuum for grinding dust.

Create a profile

Coatings need a slightly rough surface — like medium sandpaper — to grab onto. Smooth, slick concrete makes coatings peel.
Grinding (best) or acid etching (for lighter-duty coatings) opens the surface.
Rinse and let the slab dry completely before coating.

What makes it strong

Bond: a clean, profiled, dry surface and the right primer.
Thickness: the right film build — two-part epoxies build much thicker than paints.
Chemistry: two-part epoxies and xylene coatings resist hot tires and chemicals better than water-based paints.
Topcoat: a clear UV-stable topcoat protects epoxy from sun and wear.

Application & cure

Check the temperature, humidity and the slab's dew point — Florida heat shortens working time.
Two-part epoxy has a pot life: mix only what you can roll in time.
Walk-on, drive-on and full-cure times are different. Driving on it too soon causes hot-tire lifting.

Common problems we see

Peeling and flaking — poor prep or the wrong product over an old coating.
Hot-tire pickup — wrong product for a garage, or cars on it before full cure.
Bubbles and blisters — moisture in the slab or applying in direct sun.
Slippery when wet — no non-skid in the final coat.

Most common floor job problems

What goes wrong — and how to prevent it

Nearly every failure traces back to the product choice, the prep, or the application and cure. Here's what to look for.

Peeling & flaking

Probable causes

Smooth, unprofiled concrete — nothing to grip
Oil, sealer or old coating left on the surface
Moisture pushing up through the slab

Best solutions

Grind or etch to a proper profile
Degrease and remove failing coatings
Do a moisture test before coating

Bubbling & blistering

Probable causes

Outgassing from porous concrete in rising heat
Applying too thick or over-mixing
Trapped moisture under the coating

Best solutions

Apply in falling temperatures (late afternoon)
Prime porous slabs; follow film thickness
Back-roll and use a spiked roller on epoxy

Flashing (uneven sheen)

Probable causes

Uneven porosity or patched areas absorbing differently
Lap marks from rolling into drying edges
Uneven film thickness

Best solutions

Prime or seal the slab first for even absorption
Keep a wet edge and work in small sections
Apply a uniform second coat

Hot-tire pickup

Probable causes

Single-part or latex paint used where cars park
Driving on it before full cure
Poor adhesion from weak prep

Best solutions

Use a two-part epoxy or polyaspartic system
Wait the full cure time before parking
Profile the concrete properly

White haze, blush & efflorescence

Probable causes

Humidity or dew during cure (amine blush)
Mineral salts carried up by slab moisture
Coating over damp concrete

Best solutions

Coat only within the label's temperature/humidity window
Clean salts and fix the moisture source
Wash blush off before recoating

Soft, tacky or won't cure

Probable causes

Wrong mix ratio or not mixed thoroughly
Too cold to cure
Coat too heavy

Best solutions

Measure parts exactly and mix the full time
Stay within the label's minimum temperature
Remove uncured material and reapply

Yellowing & fading

Probable causes

Indoor-only epoxy used in Florida sun
No UV-stable topcoat
Harsh chemicals or pool water

Best solutions

Pick an exterior-rated, UV-stable product
Add a UV-resistant topcoat over epoxy
Rinse chemicals promptly

Slippery when wet

Probable causes

Glossy finish on pool decks, ramps or patios
No non-skid additive
Additive not mixed or spread evenly

Best solutions

Add non-skid (RH-01 per gallon, RH-05 per 5 gal)
Choose a satin or textured finish outdoors
Stir often so grit stays even

Compare

Coating types at a glance

Type	Best for	Hot tires	Odor	Look
Water-based concrete coating & stain	Patios, porches, walkways, lanais	No	Low	Solid color, many colors
Xylene concrete coating & stain	Driveways, carports, aprons	Best	Strong — ventilate, respirator	Solid color or translucent stain
One-part epoxy	Garages and utility rooms, easier DIY	Good	Moderate	Solid color, optional flake
Two-part epoxy	Garages, workshops, commercial floors	Best	Moderate	Thick, glossy, optional flake
Sealer	Pavers and bare concrete you want to keep	Good	Varies	Clear, wet-look or natural

Brands we carry: Tuff Top, Benjamin Moore, INSL-X and Gulf Coast Paint.

Before you buy: prep check

Moisture test: tape a plastic square down for 24 hours. Darkened concrete underneath means moisture — ask us before coating.
Old coating? Scratch it with a key. If it flakes, it has to come off first.
Sprinkle water: if it beads, the slab is sealed and needs etching or grinding.
New concrete must cure about 28 days.

Non-skid

We recommend non-skid additive in every floor coating, without exception.

Read the full floor coatings guide

How much do I need?

Square feetCoats

Enter your area

Estimate at ~250 sq ft per gallon per coat. Rough or porous concrete uses more.