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Roof and gutter sealant for gutter joints, flashing laps, downpipes and metal roofing, led by Bostik and Soudal neutral cure silicones. The range also covers general silicones, high tack adhesives, gap fillers and expanding foam. Pick up in Truganina or order Victorian delivery; flammable products are pickup or local delivery only.
Roof and gutter sealant: choose by the job
A roof and gutter sealant has to stay flexible in the sun and stick to coated steel. Pick the product by where it is going.
For gutter joints, downpipes, flashings and lap joints on Colorbond or Zincalume, Bostik Roof and Gutter Sealant is a neutral curing, 100% silicone. The translucent version is listed as suitable for drinking water under AS/NZS 4020, which matters if the roof feeds a tank. Soudal Trade Roof and Gutter Silicone is a neutral cure silicone that bonds to aluminium, PVC, roof tile, stainless steel, and zinc and galvanised coatings. It is water potable tested.
For general sealing, Siegel silicone comes as a single tube or a box of 25, and Soudal Trade all purpose silicone comes in titanium and charcoal. For bonding as well as sealing, there are Soudal Multibond sealants, T-Rex and Bostik Xtreme high tack cartridges, and Bostik No More Nails construction adhesive.
For gaps, use the acrylic gap fillers. For filling larger voids, Bostik Expanda Foam is a 500 ml can. Aerosols, activator sprays and solvent products are classed as flammable, so they are pickup or local delivery only.
Fix the sheet first with the right roofing screws, then seal. Flashing tapes and pipe flashings are in roof flashing.
Gutter sealant FAQs
What sealant should I use on gutters?
A neutral cure roof and gutter silicone made for coated steel, such as the Bostik or Soudal roof and gutter products. Clean and dry the joint before you apply it.
Is roof and gutter silicone safe for a rainwater tank?
Check the listing. Bostik Roof and Gutter translucent is listed as suitable for drinking water under AS/NZS 4020, and Soudal Trade Roof and Gutter is listed as water potable tested.
Can I use silicone on a Colorbond roof?
Yes, a neutral cure silicone made for roofing. Bostik lists Colorbond and Zincalume among the surfaces its roof and gutter sealant is made for.
Can sealants be delivered interstate?
Flammable products such as foam and activator sprays are pickup or local delivery only. Checkout shows the options for each item and your address.