Revive black limestone with Enhance & Restore Limestone Sealer by Universeal
StoneCare 4u - Essential Limestone Sealer 'Colour Boost' – Eco Friendly, High Performance Sealer for Black & All Forms of Limestone Paving & Patio's. Quick & Easy to Apply. (5 Litre) :
Sika Black Limestone sealer, 5L | DIY at B&Q
Easy Seal Slate Limestone Sealer - UK Wide Delivery | Buy Online Today | Corker.co.uk
Cleaning and Sealing A Black Limestone Patio in Broadstone, Dorset - Dorset Tile Doctor