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SKU: SEL039
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Selleys Roof & Gutter Silicone Sealant Shale Grey 300g gives you a reliable, long-lasting waterproof seal that protects your roof and gutters from leaks and weather damage. This 100% neutral cure silicone sealant sticks well to most building surfaces, including metals, tiles, cement sheeting, PVC, and Colorbond® roofing. Its flexible formula handles expansion and contraction, while the shale grey colour blends perfectly with many roofing materials for a neat finish.
Creates a strong, waterproof, and UV-resistant seal that lasts up to 25 years without cracking, peeling, or crumbling.
Uses a neutral cure silicone formula that won’t corrode metals like zinc or damage cementitious surfaces.
Bonds well to Colorbond® steel, copper, aluminium, brass, zinc, galvanised metals, rigid PVC, most plastics, rubber, glass, terracotta, concrete, and glazed tiles.
Suitable for contact with drinking water, making it safe for many applications.
| Surface Type | Typical Uses | Tips for Best Results |
|---|---|---|
| Metal Roofing & Gutters | Colorbond® roofs, zinc, aluminium, brass | Clean surfaces well before applying sealant. |
| Tiles & Cement Sheeting | Roof tiles, cement sheets | Remove dust and loose debris before sealing. |
| PVC & Plastic Surfaces | Downpipes, vents, flashing | Pre-test plastics for compatibility. |
| Concrete & Terracotta | Roof penetrations, gutters, flashing | Ensure surfaces are clean and dry. |
Clean and dry all surfaces thoroughly, removing dust, grease, and loose material.
Cut the cartridge nozzle at a 45° angle and pierce the seal.
Apply the silicone sealant evenly with a caulking gun, pressing it firmly into joints or cracks.
Tool the sealant with a spatula or wet finger within 5–10 minutes for a smooth finish.
Avoid contact with water until the sealant skins over.
Let the sealant cure fully, usually within 24 to 48 hours, before exposing it to weather or water.
Clean uncured sealant with mineral turps or a similar solvent.
| Product Type | Neutral cure 100% silicone sealant |
| Size | 300 g cartridge |
| Colour | Shale Grey |
| Flexibility | ± 25% movement capability |
| Elongation | Up to 400% |
| Temperature Resistance | -60°C to +150°C |
| UV Resistance | Excellent |
| Guarantee | 25 years against cracking, peeling, crumbling |
| Limitations | Not paintable; avoid polyethylene, polypropylene, Teflon; pre-test plastics |
Use in a well-ventilated area and avoid breathing in vapours.
Keep out of reach of children.
Wear gloves and eye protection to prevent skin and eye contact.
Do not use as a plug for burst pipes or below waterline applications.
Follow all label instructions carefully for safe and effective use.
Yes, Selleys Roof & Gutter Silicone is specially formulated to bond effectively with Colorbond® and other coated steel roofing materials. It delivers a strong, flexible seal that accommodates movement and weather changes. This makes it ideal for long-lasting, weatherproof joints on metal roofing systems.
The sealant skins in approximately 5 to 10 minutes, providing early resistance to surface contact. Full cure is typically achieved within 24 to 48 hours, depending on bead size, temperature, and humidity. It’s important to avoid water exposure or movement during this curing period to ensure a proper bond.
No, this silicone sealant is not paintable due to its non-porous surface, which prevents paint adhesion. All painting should be completed at least 7 days before sealant application to avoid interference. For projects requiring a paintable finish, consider using a compatible alternative product.
Selleys Roof & Gutter Silicone Sealant Shale Grey 300g delivers a flexible, durable, and waterproof seal that keeps your roof and gutters safe from leaks and weather damage.
Explore our Sealant Range for other options.
| Weight | 0.35 kg |
|---|---|
| Dimensions | 23 × 5 × 7 cm |
| Brand |
Selleys |
| ALL Product Type |
Sealant |
| Sealants |
Sealants |
| Sealants and Adhesives |
Sealants ,Waterproofing |
Selleys Roof & Gutter Silicone Sealant Shale Grey 300g
Selleys Roof & Gutter Silicone Sealant Shale Grey 300g
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