Thompson’s One Coat Water Seal is a silicone micro-emulsion that penetrates exterior brick, concrete and stonework to create a long-lasting barrier against rain damage.

It can be applied directly to damp surfaces, helps prevent freeze-thaw damage and reduces efflorescence. Touch dry in just two hours and covering approximately 4m² per litre.

• 1 litre; for exterior brick, concrete and stonework
• Silicone micro-emulsion penetrates surfaces for lasting rain protection
• Apply directly to damp surfaces
• Helps prevent damage caused by freeze and thaw
• Reduces efflorescence
• Touch dry in 2 hours
• Covers approximately 4m² per litre