Power washing your driveway and interlocking pavers can restore their appearance, remove dirt, and prevent deterioration. Here are tips and techniques for effective power washing:
Preparation
Choose the Right Equipment:
Use a pressure washer with a PSI of 2,000–3,000 for most driveways and interlocking pavers.
Attach a rotary surface cleaner for even cleaning on large surfaces.
Select Appropriate Detergent:
Use a detergent designed for driveways or interlocking pavers to lift oil, grease, and grime.
Clear the Area:
Remove furniture, vehicles, and debris like leaves or branches.
Sweep the surface to eliminate loose dirt and sand.
Protect Adjacent Areas:
Cover nearby plants, walls, or delicate surfaces to prevent damage from high-pressure water or detergent.
Techniques for Power Washing
Test a Small Area:
Test the pressure washer on a small, inconspicuous area to ensure it doesn’t damage the surface.
Pre-Treat Stains:
Apply a degreaser or stain remover to oil or grease spots. Let it sit for 5–10 minutes before washing.
Use the Correct Nozzle:
Start with a 25-degree nozzle for general cleaning.
Switch to a 15-degree nozzle for tougher stains or to clean grout lines between interlocking pavers.
Maintain Proper Distance:
Keep the nozzle about 8–12 inches from the surface to prevent damage.
Avoid pointing the stream directly at the grout or seams to prevent dislodging sand or pavers.
Work in Sections:
Clean small sections at a time, starting from the highest point if your driveway has a slope.
Move the nozzle in a consistent sweeping motion for even cleaning.
Rinse Thoroughly:
Rinse away detergent and loosened dirt with clean water. Ensure all soap residue is removed to prevent streaking.
Post-Washing Maintenance
Re-Sand Interlocking Pavers:
Allow the pavers to dry completely.
Apply polymeric or jointing sand to the gaps between pavers to stabilize them and prevent weed growth.
Seal the Surface:
Once the driveway or pavers are dry, apply a sealant to protect against stains, water damage, and fading.
Inspect for Damage:
Check for cracks, dislodged pavers, or gaps in the grout and repair as necessary.
Regular Maintenance:
Sweep or rinse the surface periodically to reduce dirt buildup and maintain its appearance.
Safety Tips
Wear Protective Gear:
Use safety goggles, gloves, and non-slip shoes to prevent injuries from high-pressure water or flying debris.
Avoid Sensitive Areas:
Keep the pressure washer away from windows, doors, and fragile landscaping features.
Mind the Weather:
Choose a dry day with no rain in the forecast to ensure proper drying and sealing.