To achieve the best results, follow these key outdoor cleaning principles:
-
Check Weather Conditions: Avoid cleaning in direct sunlight or before rainfall to prevent streaking and ineffective product absorption.
-
Test in a Small Area First: Always check how a cleaning product interacts with the material before treating the entire surface.
-
Use the Right Tools: Soft brushes work best for delicate surfaces, while stiff-bristled brushes can help remove stubborn grime on more durable materials.
-
Rinse Thoroughly: Prevent residue buildup by completely washing away all cleaning solutions.
Now, let’s dive into the optimal cleaning methods and tools for outdoor natural stone and porcelain paving.
Natural Stone
Natural stone paving, such as limestone, sandstone and granite, is a classic favourite in New Zealand for its natural character and timeless appeal. Every piece has its own texture and tone, helping outdoor spaces feel connected to the land. But unlike porcelain tiles, natural stone is porous by nature. That means it can soak up water, oils and everyday spills, which can lead to staining or discolouration if not cleaned and sealed properly.
New Zealand’s weather, from coastal salt air to frosty mornings and hot summer sun, can be tough on stone surfaces. Over time, unprotected stone can weather, fade or even become damaged if harsh cleaners or the wrong techniques are used. While some stone types are more hard-wearing than others, all benefit from regular care to keep them looking their best. With the right products and approach, your natural stone can stay beautiful and strong for years to come.
After a damp Kiwi winter, outdoor stone areas often need a solid refresh. PS87 PRO is a great go-to for unpolished natural stones, helping lift built-up grime and restore the surface without damage.
How to use it:
-
For general cleaning and degreasing: Mix PS87 PRO with water (1:10 to 1:20), depending on how dirty the surface is. Apply the solution, leave it for 4–5 minutes, then scrub lightly. Wipe up residues with a cloth or wet vacuum, and rinse thoroughly with clean water.
-
For deeper cleans: When dealing with heavier grime or stubborn marks, use a stronger 1:5 mix. This gives a deeper clean and helps remove ingrained dirt without harming the stone.
Porcelain Paving
Porcelain paving is valued in New Zealand for its strength and low maintenance. Made from fine clay fired at very high temperatures, it resists stains, scratches and fading from UV exposure. Its dense, non-porous surface also prevents water absorption, helping to stop mould and mildew from forming, which makes it ideal for high-traffic and damp outdoor areas.
Even so, porcelain paving can still collect dirt, algae and rust stains over time, especially in shaded or wet spots. Pavers come in smooth, structured and textured finishes, and each may need a slightly different cleaning approach. Smooth surfaces are easier to maintain, while textured ones might need more scrubbing or soaking time.
For a thorough spring clean, PS87 PRO is an effective solution. This powerful detergent removes built-up dirt, grease, and organic stains, but the dilution ratio depends on the severity of the grime:
-
Degreasing and Cleaning: Dilute PS87 PRO with water (1:10 to 1:20), apply to the surface, and let it sit for 4-5 minutes. Scrub gently and wipe away residues with a cloth or wet vacuum cleaner, then rinse thoroughly.
-
Heavy Cleaning: For stubborn residues, use a stronger dilution of 1:5. This will provide more intense cleaning power for tough marks and buildup.
-
Tough Stains: Apply this stain-removing detergent directly onto the stain, leave it to work until dry, then wash and rinse the surface of porcelain tiles thoroughly.
