Slate · Quartzite · Flagstone

Stone That's Been Neglected, Coated, or Weathered — Restored.

Professional restoration for Hawaii — pool decks, lanais, walkways, and indoor floors. Send photos for a free assessment.

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Moss-eaten flagstone steps before restoration, restored quartzite below
The Problem

What neglected slate and quartzite actually looks like.

Outdoor stone in Hawaii takes a beating — sun, salt air, rain cycles, foot traffic, and pool chemistry all wear it down. The damage usually shows up as one or more of these:

  • 01
    Failing topical coatings Peeling, flaking, or hazing across the surface.
  • 02
    Efflorescence Chalky white mineral deposits that won't scrub off.
  • 03
    Embedded dirt & biological growth Moss, mildew, and soil ground into the stone's texture.
  • 04
    Faded or washed-out color Especially on pool decks and exposed walkways.
  • 05
    Surface erosion Rough, pitted texture from years of weather and wear.

The good news: in almost every case, the stone underneath is still beautiful. It just needs the right process to bring it back.

What We Do

A complete restoration process — built for the stone you have.

Flagstone is a cut, not a stone. The flagstone surfaces we restore in Hawaii are typically slate or quartzite — we'll identify exactly what you have during the assessment. Our process works on both:

01

Topical Coating Removal & Stripping

When a previous coating has failed, we strip it down to clean stone so the restoration starts from a real foundation — not a compromised one.

02

Silicon Carbide Resurfacing

Removes surface wear, embedded soil, and dead stone layers — revealing fresh, unweathered material underneath.

03

Efflorescence Treatment

Targeted chemistry to clear out the chalky mineral deposits that come from moisture migrating through the stone.

04

Penetrating Impregnating Sealer

Long-lasting protection that bonds within the stone — never peels, never flakes, never traps moisture.

05

Color-Enhancing Sealer Optional

Deepens and brings out the natural color of the stone — recommended when you want the dramatic, "wet look" finish without the failure mode of a topical coating.

The Single Biggest Mistake

Why we never use topical coatings.

The single biggest reason slate and quartzite installations fail in Hawaii? Someone put a topical coating on them.

Topical coatings sit on top of the stone, trap moisture underneath, peel under UV and water exposure, and turn beautiful surfaces into a flaking, cloudy mess. Once they fail, the only fix is full stripping — which adds significant cost to the restoration.

See the failing coating in the gallery photo to the right — that hazy, blotchy surface isn't dirt. It's a coating breaking down.

Penetrating impregnating sealers work differently. They bond within the stone itself, protecting it from within, while letting the surface breathe. They last for years without ever flaking — and when they eventually wear, they wear invisibly, not catastrophically.

Failing topical coating on slate compared to properly restored slate
Left: failing coating Right: same stone, restored properly with a penetrating sealer.
★★★★★
Austin restored the quartzite stone surface of my lanai and the brick at my entryway. It looks brand new. He's meticulous, talented, and personable — he voluntarily explained each aspect of the process to my complete satisfaction. I unequivocally recommend him.
Robert L. · Google Review
Pricing

How is pricing determined?

Flagstone pricing depends on a few key factors — which is why we quote from photos and an in-person walk-through rather than publishing a flat rate.

We'd rather give you a real number than a misleading one.

The four factors that shape your quote

01
Condition of the stone
Light maintenance versus deep restoration — these are very different jobs.
02
Presence of an existing coating
If there's a failed topical that needs stripping, that's added scope.
03
Size of the area
Square footage drives the bulk of the labor and materials.
04
Indoor or outdoor
Different processes, different sealers, different protections.
★★★★★
"Austin is fantastic — a highly skilled technician who really knows what he is doing. He works carefully and efficiently, with great attention to detail. They look so great that two of our neighbors want Austin to do theirs too."
Beverly M. · Google Review
★★★★★
"Austin comes with a wealth of knowledge. Tackling even the hardest restoration projects is where he shines. It shows in his work and dedication to his craft."
Wesley L. · Google Review
Get In Touch

Get your free assessment.

Tell us a bit about your project and we'll get back to you within 24 hours — either with a ballpark estimate or a few quick follow-up questions to dial it in.

  • 01

    You send your info

    Fill out the form. The more detail you share, the faster we can dial in your ballpark.

  • 02

    We respond within 24 hours

    Either a quick ballpark based on what you've shared, or a few follow-up questions and a request for photos if we don't have them yet.

  • 03

    We confirm on-site

    Once the scope looks right, we schedule a walk-through to lock in the final number and book the job.

Request your assessment

Free, no obligation. Response within 24 hours.

Have photos handy? You're welcome to send 2–4 to allgoodstonecare@gmail.com after submitting — but it's not required. We can also gather them when we talk.