Ageing and weathering resistant
Bonds well to a wide variety of substrates without the need for special pre-treatment
Can be overpainted
Can be sanded
Isocyanate- and solvent-free
Silicone- and PVC-free
Sikaflex®-521 UV adheres well to a wide variety of substrates and is suitable for elastic sealing and bonding. Suitable substrate mate-rials include timber, metals, metal primers and paint coatings (2-part systems), ceramic materials and plastics. Seek manufacturer’s advice and perform tests on original substrates before using Sikaflex®-521 UV on materials prone to stress cracking. This product is suitable for experienced professional users only. Test with actual substrates and conditions have to be performed to ensure adhesion and material compatibility.