Thompson's Waterseal Clear Low VOC Water-Based Multi-Surface Waterproofer 5 gal.Thompson brings to you the Waterseal 5 gallon Clear Multi Surface Waterproofer to help you provide longevity to your exteriors. The Thompson water seal spray is highly recommended as a method of waterproofing wood. Use this clear wood seal as a concrete waterproofer or as a water seal for wood on your fences, decks, and patios, and watch them last a lifetime. The low VOC formula of this wood sealant not only effectively seals wood but also brick and