We have a large selection of materials from the best names in the mastic joint sealant and waterproofing business. County Construction Chemicals have had a great working relationship with Fosroc, Sika, Dow Corning, Geocel, Adshead Ratcliffe Arbo, Tremco illbruck and Mapei for many years and have more recently supplied other renowned and trusted manufacturers product lines, such as OTTO CHEMIE, Polyseam ASF, Kroger MK, Chemfix Timbabuild and Repair Care's Windowcare System. This supply has moved seamlessly to our Eshop and Sealants Online has a growing number of professional mastic caulking guns, useful tools, accessories, bath / shower waterproofing materials and passive fire protection products.