Quick Facts: The Four Answers
- Spot repair: the damage is contained (a few hairline cracks, a chip, one hollow patch) and the rest of the coating is still bonded.
- Recoat: the coating is still bonded but faded, chalky, thin or worn in traffic paths. Repairs, then fresh texture and color over the prepared surface.
- Full resurface: the coating is peeling or hollow in several places, or it is past its typical life: cool deck coating 10–12 years (5–7 in harsh, full sun), stamped overlay (flagstone look) 10–15, stamped concrete 12–15.
- Replace: the slab itself has failed: sections sunk or lifted about an inch or more, cracks that keep widening or have one side higher, crumbling concrete, or slope toward the house. The failed section is repoured, then the deck is resurfaced so it matches.
- Time on site: repairs, recoats and resurfacing take 1–2 days of work plus a 3–7 day cure, with light foot traffic after 24–48 hours.
We built this helper from the same checks we run on every estimate. Answer three questions about your deck and it points you to the likely fix. It is a first read, not an inspection: slab movement, hollow spots and drainage still have to be confirmed on the deck itself, and we do that for free. No prices here, because every deck is quoted from the actual surface.
Check Your Deck
The Decision Table: Match What You See to the Fix
If more than one row matches, the lowest row wins. A slab problem decides the job no matter how good the coating looks.
| What you see | What it usually means | Likely fix |
|---|---|---|
| Dirt, mildew or dull color; nothing loose, hollow or cracked | The surface needs cleaning, not repair | Nothing yet: clean it and reseal on the system's schedule |
| Hairline or spider cracks, a chip, or one hollow patch; the rest of the coating is bonded | Contained damage | Spot repair, blended into the deck (a patch on a sun-faded deck can read slightly newer) |
| Faded, chalky or thin coating; smooth traffic paths; too hot barefoot; coating still bonded everywhere | The coating is wearing out but still holding | Recoat: repairs, then fresh texture and color, ideally a lighter one |
| Peeling or hollow in several places, or a coating past 10–12 years (past 5–7 in full sun) | The coating has failed or reached the end of its life | Full resurface: failed coating removed, cracks repaired, a new coating system |
| Cracks that keep widening or have one side higher; sections sunk or lifted about an inch or more; slope toward the house; crumbling concrete | The slab itself has a problem | Replace the failed section (or the deck), then resurface so it all matches |
Age and Sun: When to Plan the Next Coat
If nothing on the table above applies yet, age and sun tell you when to plan. A properly prepared cool deck coating typically lasts 10–12 years in the Valley. Harsh conditions, mainly full sun with no shade, dark colors, constant water or poor prep, can cut that to 5–7. Phoenix averages 111 days a year at or above 100°F (NWS Phoenix, 1991–2020), so a deck in full sun usually sits at the short end.
| Age of the coating | Full sun most of the day | Partly or mostly shaded |
|---|---|---|
| Under 5 years | Maintain; fix small damage early | Maintain; fix small damage early |
| 5–9 years | Inside the 5–7-year harsh range: plan a recoat | Maintain; recoat when wear shows |
| 10–12 years | Past the harsh range: expect a full resurface | End of the typical range: recoat if still bonded, resurface if not |
| More than 12 years | Full resurface | Full resurface in most cases |
Decorative systems last longer: a stamped overlay (flagstone look) typically runs 10–15 years and stamped concrete 12–15, with a reseal every few years. These are typical ranges, not warranty terms. Our workmanship warranty is 2 years, in writing.
What Each Fix Involves
Spot repair
We open and fill the cracks, cut out any small hollow area back to sound material, and texture and color the repair to blend in. It suits a young, sound deck with one or two problem spots. On an older, sun-faded deck a patch can read slightly newer than the rest, which is when a recoat starts to make more sense. More on our cool deck repair page.
Recoat
The deck is cleaned, loose edges and cracks are repaired, and a fresh texture and color go over the prepared, still-bonded coating. It renews the look and the wear surface without stripping the deck. It is also the moment to go lighter: a light coating can run up to 30°F cooler than bare concrete in direct sun (source: LBNL Heat Island Group, measured on pavement). See cool deck coating.
Full resurface
Failed coating comes off down to sound concrete, cracks and spalls are repaired, and a new coating system goes on: a cool deck texture, or a stamped overlay (flagstone look). Recoating over a coating that has let go only moves the failure into the new layer. See pool deck resurfacing.
Replace
A coating follows the slab under it, so it cannot fix a slab that is moving, crumbling or sloped the wrong way. The failed section is broken out and repoured, and once the new concrete has cured, the whole deck is resurfaced so old and new match. Parts of the Valley sit in mapped subsidence and earth-fissure areas (Arizona Geological Survey); have a structural engineer look at any slab you suspect is failing. Our resurface vs. replace guide goes deeper.
What This Helper Can't Tell You
- Whether a crack is moving. Track it with dated photos next to a coin, or let us check it. Our cracked deck guide has a home crack test.
- Hidden delamination. A tap test across the whole deck finds hollow areas that look fine. Our peeling guide shows how.
- Which product is on the deck now. Genuine Keystone Kool Deck bonds only to clean, sound concrete, per Mortex's instructions, so a coated deck usually gets a texture coating system instead.
- Drainage under storm conditions. Run a hose for five minutes, or look after a monsoon storm, and watch where the water goes.
Questions About Repairing or Resurfacing
How do I know if my pool deck needs repair or resurfacing?
Look at how far the damage reaches. If it is contained (a few hairline cracks, a chip, one hollow patch) and the rest of the coating is bonded, a spot repair usually makes sense. If the coating is faded and thin but still bonded, a recoat renews it. If it is peeling or hollow in several places, or past its typical life of 10–12 years (5–7 in harsh, full sun), a full resurface is the better value.
What is the difference between a recoat and a full resurface?
A recoat goes over a coating that is still bonded: the deck is cleaned, small damage is repaired, and fresh texture and color go on top. A full resurface removes coating that has failed down to sound concrete, repairs the cracks and spalls, and puts a new coating system on. Both take 1–2 days of work plus a 3–7 day cure.
When does a pool deck need to be replaced instead of resurfaced?
When the slab itself has failed: sections that have sunk or lifted about an inch or more, cracks that keep widening or have one side higher, crumbling concrete with little sound surface left, or slope that sends water toward the house. Usually only the failed section is repoured, and then the whole deck is resurfaced so it matches.
Does full sun shorten the life of a pool deck coating?
Yes. A properly prepared cool deck coating typically lasts 10–12 years in the Valley, but harsh conditions such as full sun with no shade, dark colors and constant water can cut that to 5–7. A lighter color takes less heat and stays more comfortable underfoot.
Related
How this helper works: the outcomes follow the inspection checks in our resurface vs. replace guide and the typical lifespans published across this site. The about-an-inch settling threshold is a field rule of thumb, not an engineering standard. Last reviewed October 27, 2026. How we research and review our guides: editorial policy.