Specialist supplier of Damp Proofing, Basement Waterproofing, Timber Treatment & Structural Repair products. A family business for over 30 years. Permagard is immensely proud of its own PermaSEAL range of basement waterproofing and damp proofing membranes. Official distribution partners for Newton Waterproofing and Remmers. Based in Avonmouth, Bristol, UK. We have a trade counter where you can drop-in and buy direct or benefit from Click and Collect in just 15 minutes.