Raincheck Limestone Sealer Clear 25L

Raincheck LS is a ready-to-use, colourless water repellent formulated specifically for protecting absorbent limestone against penetrating damp. Its silane-siloxane resin composition ensures strong chemical bonding to the carbonate structure of limestone, allowing for deep penetration and long-lasting performance. This breathable treatment offers excellent surface beading while allowing trapped moisture to evaporate, preserving both the fabric and appearance of stone. Raincheck LS is UV and alkali resistant, making it suitable for use on both new and historic masonry exposed to the elements. It penetrates 2 to 10 mm into the stone and cures rapidly after application. Apply by brush, roller or low-pressure spray in two coats, wet on wet. Suitable only for unpainted, porous surfaces. Not recommended for use on dense or sealed limestone. Ensure surfaces are dry and free from rain for 24 hours before and after treatment. Use a test area before full application to assess compatibility.