Brick Laser Cleaning
Brick deep-cleaned to bare face at 1.5–6.5 J/cm² — 92% IR absorption pulls contamination from the 15–25% void fraction, no wet chemistry. Bay Area service.
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Todd DunningMSUnited States
Optical materials for industrial photonics systemsPublished
Jun 19, 2026
Brick Fireplace Laser Cleaned
Roger laser-cleans an 80-year-old brick fireplace with 3/8 inch of pitch tar, creosote, and soot using a Netalux at 415 mm standoff. Heavily contaminated brick required repeated passes — no chemicals, no sandblasting, no contact damage to mortar joints.
What This Video Shows
An 80-year-old brick fireplace with 3/8 inch of pitch tar, creosote, and soot. Chemical and abrasive options were ruled out. Roger rented the Netalux machine and cleaned it in Belmont at 415 mm standoff, making repeated passes over the worst deposits.
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Frequently Asked Questions
What does this Brick Fireplace Laser Cleaned video demonstrate?
This video shows a Netalux laser removing 3/8 inch of accumulated pitch tar, creosote, and soot from an 80-year-old brick fireplace. The operator works at 415 mm standoff distance, making repeated passes over the most severely contaminated areas. Chemical treatment and sandblasting were ruled out due to surface sensitivity — laser cleaning restored the brick without contact or mortar joint damage.
How can this video help evaluate related applications?
This video provides a direct reference for deeply contaminated masonry scenarios — specifically pitch tar and creosote at residential scale. It confirms that 415 mm working distance controls both temperature and contamination spread on brick, and that thick deposits require multiple passes rather than a single slow sweep. Use it to calibrate expectations for fireplace, heritage masonry, and creosote removal jobs.
Why did this job require repeated passes instead of a single sweep?
Pitch tar and creosote at 3/8 inch depth absorb laser energy differently than thin oxide layers — the outer contamination chars and shields the surface beneath. Repeated passes at 415 mm standoff progressively ablate the deposit without overheating the brick or mortar. Single-pass approaches at higher energy risk thermal shock to mortar joints; the multi-pass method at conservative energy level is the standard approach for masonry with thick organic buildup.