Flagstone Cleaning & Restoration

Flagstone Cleaning & Restoration - Philadelphia & the Delaware Valley

Bring New Life to Your Flagstone’s Natural Character

Flagstone is valued for its rugged beauty, natural texture, and timeless appeal—especially in patios, walkways, pool decks, entryways, and outdoor living spaces. Over time, exposure to weather, moisture, foot traffic, and environmental buildup can cause flagstone to become stained, uneven in color, or slippery. At Facility Specialists, we provide professional flagstone cleaning, restoration, repair, and sealing services throughout the Philadelphia & Delaware Valley area.

Our goal is to restore flagstone’s natural appearance while improving safety, durability, and ease of maintenance.

Common Flagstone Problems We Restore

Flagstone surfaces face constant exposure to the elements. We address issues such as:

Dirt, soil & organic buildup
Algae, mold & mildew growth
Discoloration & uneven coloration
Surface erosion & wear
Loose, cracked or shifting stones
Deteriorating or missing joints
Water absorption & darkening
Slippery surfaces when wet
Faded or weathered appearance

Proper restoration brings back the stone’s texture and color without damaging its surface.

Our Flagstone Cleaning & Restoration Process

Site Evaluation
We inspect the stone type, joint material, drainage conditions, and level of wear to determine the safest restoration approach.
Deep Cleaning
Using controlled pressure and stone-safe cleaners, we remove embedded dirt, organic growth, and surface contaminants—without harming the stone.
Repair & Stabilization
Loose stones are reset, cracked pieces are repaired or replaced, and unstable areas are reinforced for long-term durability.
Joint Repair or Repointing
Worn or missing joints are repaired or replaced to improve appearance, stability, and drainage.
Sealing for Protection
We apply a high-quality penetrating or breathable sealer to help protect against moisture intrusion, staining, and organic growth.
Final Detailing
The surface is cleaned and detailed to ensure an even, natural, and refreshed finish.

Did You Know?

Flagstone is naturally porous, making sealing critical for long-term performance.
Algae and moss growth are common in shaded, damp areas but can be safely removed without pressure damage.
Improper pressure washing can cause surface erosion and premature wear.
Sealed flagstone stays cleaner longer and is safer underfoot when wet.

FAQs About Flagstone Cleaning & Restoration

Q. Can flagstone be restored without replacing it?

A. Yes. Most flagstone surfaces can be cleaned, repaired, and sealed without full replacement.

Q. Is pressure washing safe for flagstone?

A. Only when done correctly. Improper pressure washing can damage the stone. We use controlled, stone-safe methods.

Q. Should outdoor flagstone be sealed?

A. Yes. Sealing helps reduce staining, moisture absorption, and organic growth.

Q. Do you repair loose or uneven stones?

A. Absolutely. We reset stones and repair joints to improve stability and safety.

Q. How often should flagstone be maintained?

A. Professional cleaning and sealing is recommended every 2–3 years, depending on exposure and usage.

Restore the Natural Strength & Beauty of Your Flagstone

Schedule Your Free Flagstone Evaluation Today!

From patios and walkways to pool decks and entryways, we restore flagstone surfaces with care, precision, and lasting results.

Contact Facility Specialists today to get started.

(215) 732-7505

Call Us Today!