Black Slate 20mm

Black Slate is a dark grey/black chipping made from Premium Welsh Slate which provides excellent ground coverage, is extremely easy to lay, and suitable for aquatic use due to being fish friendly.

Made from recycled products.

We have a minimum order policy of one pallet per customer. 50 mini bags (20kg each) on a pallet equals to 1 ton.

 Laying Depth: 40mm 1 x 20kg bag covers: 0.25m² 1 x bulk bag covers: 8.75m² 

 Aggregates Calculator

• SQUARE AREA x DEPTH = M3
• EACH BULK BAG HOLDS APPROXIMATELY 0.61m3
• SUGGESTED DEPTH IS 30MM - 50MM.
• SHINGLE SUGGESTED FOR DRIVEWAYS = 20MM SIZED.

STEPS TO WORKOUT COVERAGE.

1. FIND OUT SQUARE AREA (METERS)
2. SQUARE AREA x DEPTH (0.3-0.5)
3. DIVIDE ANSWER FROM STEP 2 BY 0.61
4. ANSWER AS TO HOW MANY BAGS YOU NEED.