For cleaning, stripping and surface preparation without abrasive media, water blasting uses high-pressure water to cut through dirt, paint, grime and contamination. Goliath Coatings provides water blasting across Auckland for concrete, masonry, paths, building exteriors and industrial surfaces.
What water blasting does best
Water blasting ranges from domestic-scale washing to high-pressure industrial blasting that strips coatings and laitance. Because it uses only water, there is no grit to clean up and no media residue — making it ideal for cleaning large concrete and masonry areas, removing surface contamination before coating, and washing down building exteriors, paths and hardstand.
Pressure matched to the job
The skill is in the pressure and technique: enough to remove what needs to go without scarring sound concrete or driving water where it should not be. We set the machine and nozzle to the surface — a gentle wash for a tired path, high-pressure blasting to strip a failed coating or expose aggregate — and work methodically for an even result.
Preparation and clean-down
For surfaces that will be coated, water blasting removes the loose material, dirt and contamination that would stop a new system bonding, and we allow proper drying time before coating. For cleaning work we manage run-off responsibly and leave the area clean, bright and ready to use.
What water blasting achieves
Water blasting cleans and strips using water alone — no abrasive and no flying grit. High pressure handles cleaning and coating removal, while ultra-high-pressure (UHP) hydroblasting above 30,000 psi shears coatings back to bare steel and cleans out pitted surfaces from the bottom of the pit. Graded to recognised WJ-2 and WJ-3 waterjetting standards, it restores the existing profile rather than creating a new one — ideal where a fresh anchor profile isn’t wanted and dust must be avoided.
Why choose Goliath Coatings
High-pressure cleaning and preparation are a specialty. We strip dirt, old coatings and contamination with controlled high-pressure water, dialling the pressure to the surface so it’s cleaned and prepared without being damaged — on site or in our yard. Free on-site assessment, one-business-day response, and 5-star Auckland reviews.
Water blasting FAQs
Q: What can you water blast?
A: Concrete, masonry, paths, driveways, building exteriors and industrial hardstand — from a gentle clean to high-pressure coating removal.
Q: Will water blasting damage my concrete?
A: Not when the pressure is matched to the surface — we set it to remove the contamination without scarring sound concrete.
Q: Can you prepare a surface for coating this way?
A: Yes, for many surfaces — we blast off loose material and contamination, then allow drying time so the new coating bonds.
Q: Does water blasting create a profile like sandblasting?
A: No — water blasting (including UHP) cleans and strips back to the existing profile without adding abrasive. It’s the choice when you want no grit, no dust and no new anchor profile.
Q: What determines the cost?
A: The surface area, the media required, and what is being removed — coatings, corrosion or contamination. We inspect the surface free of charge and quote a firm price for the finish standard you need.
Q: Is the work guaranteed?
A: Yes — our workmanship is guaranteed and we install proven systems from leading suppliers. Goliath Coatings is fully insured, Tōtika accredited and Site Safe certified.