Casimper is a Portuguese manufacturer of construction and surface-protection products, founded in 1986. Producing its own formulas in Portugal, the company serves homeowners and building professionals through an online store and a network of more than 200 retail partners nationwide. Its catalogue includes 57 products across ranges for interiors and exteriors, waterproofing, additives, water repellents, primers and enamels, specialist applications, and health-related solutions.

Casimper products address common building problems such as leaks, damp, cracks, deteriorating façades, and roof growth. Offerings include flexible cement-based waterproofing for terraces, pools, and bathrooms; coatings for walls and façades; roof cleaners; and fillers for repairing cracks and joints. The company also provides product combinations, practical guides, and recommendations to help customers choose solutions for specific surfaces and repair needs. Trade customers can access reseller pricing, technical data sheets, catalogues, direct factory ordering, and personalised commercial support. Casimper highlights its long manufacturing history and professional customer base, and was recognised among Portugal’s Top 5% Best SMEs in 2025.