1-component neutral cure roof and gutter silicone sealant
SikaSeal® Roof & Gutter is a one-component, neutral curing, low odour silicone sealant with excellent adhesion to most construction surfaces.
SikaSeal® Roof & Gutter cures through the absorption of atmospheric moisture to give a tough but flexible waterproof seal.
Neutral cure
Excellent adhesion to most common construction materials such as: glass, enamel, ceramics, tiles, most metal* (see Important Considerations), most plastic, rubber, concrete and grouts
Non-sag
Roofs
Gutters
Polycarbonate roof sheeting
Around plumbing fixtures and penetrations
General interior & exterior sealing around the home
Advantages
Neutral cure
Excellent adhesion to most common construction materials such as: glass, enamel, ceramics, tiles, most metal* (see Important Considerations), most plastic, rubber, concrete and grouts
Multi-purpose adhesive sealant with a wide adhesion range
Sikaflex®-221 is a multi-purpose 1-component polyurethane adhesive / sealant that bonds well to a wide variety of substrates like metals, metal primers and paint coatings (2-component systems), ceramic materials and plastics. It is suitable for making permanent elastic seals.
Bonds well to a wide variety of substrates
Resistant to ageing
Can be sanded and painted
Bonds well to a wide variety of substrates
Resistant to ageing
Can be sanded and painted
Passes EN45545-2 R1/R7 HL3
Non-corrosive
Low odour
NSF-approved for incidental food contact
Potable water approved (meets AS4020 requirements)
Usage
Sikaflex®-221 bonds well to a wide variety of substrates and is suitable for making permanent elastic seals . Suitable substrate materials are metals, metal primers and paint coatings (2-component systems), ceramic materials and plastics. It is ideally used for internal sealing and simple bonding applications. Seek manufacturer’s advice and perform tests on original substrates before using Sikaflex®-221 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.