Restoring an Outdoor Slate Walkway in a Nordic Climate

The Challenge

The slate walkway had suffered from frost damage, leading to cracks and a buildup of moss. Additionally, the surface became dangerously slippery during rain, posing a safety hazard.

Diagnosis

Inspection revealed extensive moss growth in the joints and surface, along with frost-induced cracks that compromised the integrity of the slate.

The Solution

1. Phase 1: Deep Cleaning
   Products: Lithofin MN Power-Clean
   Dilute Lithofin MN Power-Clean 1:10 with water. Apply generously to the surface and scrub with a stiff brush. Allow to sit for 10-15 minutes before rinsing thoroughly with water.
   Duration: 1 day
2. Phase 2: Sealing
   Products: Lithofin KF Stain-Stop
   After the surface is completely dry, apply Lithofin KF Stain-Stop evenly using a roller or brush. Ensure saturation of the surface and allow to dry for at least 24 hours.
   Duration: 1 day

Products Used

• Lithofin MN Power-Clean
• Lithofin KF Stain-Stop

Estimated cost: approximate €100-150

The Result

The slate walkway was restored to its original appearance, with moss removed and a protective seal applied, significantly reducing slipperiness and preventing future frost damage.

Ongoing Maintenance

Regular cleaning with Lithofin MN Power-Clean every 6 months and reapplication of Lithofin KF Stain-Stop every 2 years.

Key Takeaway

Proper cleaning and sealing can extend the life of outdoor slate surfaces, especially in harsh climates.