Concrete & Hardscape

Flagstone Patio Cleaning & Sand Refresh — Arlington Heights

A flagstone patio cleared of heavy algae and mold staining, cleaned and refreshed with new joint sand.

Project Overview

This Arlington Heights flagstone patio had developed heavy black and green algae staining across a large section, along with washed-out, gap-filled joints between the stones.

Before Service: The patio showed dark, uneven algae and mold staining across the stone surface, with visible wear in the jointing sand.

During Service: We deep cleaned the flagstone to lift the algae and staining, then refreshed the joints with new sand to lock the stones back in place and give the patio a clean, finished edge.

After Service: The flagstone came back light and even in color, with the algae staining fully removed and the joints looking sharp and freshly filled.

[ Features ]

Why Choose Firehose

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Trained & Experienced

Our team brings hands-on experience in pressure washing, soft washing, and decorative concrete care — trained to treat every surface the right way.

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Tailored to Your Property

No two properties are the same. We assess your surfaces and tailor our approach to get the safest, most effective result for your home.

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Customer Satisfaction

We're committed to delivering results you're proud of — and we don't consider a job finished until you are too.

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