Gorilla Waterproof Coat and Seal 473ml - Black | 3244021

• Liquid rubber coating - brush, roll, or pour onto leaking surfaces
• Self-levelling formula - fills gaps and cracks up to 6mm wide
• Bonds to wet or dry surfaces for emergency and planned repairs
• Apply between 10°C and 48°C - cured coat withstands -40°C to 60°C
• UV resistant - suitable for exposed outdoor surfaces
• Paintable with latex or oil-based paint once fully cured
• Suits roofs, gutters, uPVC, conservatories, caravans, and drains
• Full waterproof cure in 24-48 hours
• Warranty: 1 Year
• Dimensions: 88 x 88 x 112 mm

Gorilla Waterproof Coat & Seal liquid rubber coating in Black, 473ml - brush, roll, or pour for a flexible waterproof seal on roofs, gutters, uPVC, and more

Flexible liquid rubber that seals leaks on contact:

Gorilla Waterproof Coat & Seal is a rubberised liquid coating that brushes, rolls, or pours directly onto the surface you need to protect. The self-levelling formula flows into small gaps and cracks up to 6mm wide, creating a flexible, watertight seal without the need for specialist tools or trade skills. It sets to a smooth, flat finish that moves with the surface rather than cracking over time.

Works in wet or dry conditions, indoors and out:

You can apply this coating to both wet and dry surfaces, which makes it well suited to urgent repairs in poor weather. The application temperature range is 10°C to 48°C, and once fully cured - typically within 24 to 48 hours - the coating withstands temperatures from -40°C to 60°C. It is UV resistant and compatible with latex and oil-based paints, though a primer is recommended before applying oil-based finishes.

Suited to roofs, gutters, conservatories, caravans, and more:

This 473ml tin is sized for targeted repairs rather than large-scale projects, making it a practical option for gutters, drainage pipes, uPVC window frames, external chimneys, caravan roofs, and conservatory glazing bars. It is not suitable for use on pipes under pressure, flashing applications, gaps wider than 6mm, or any surface with direct or indirect food contact. Shelf life is approximately two years unopened from date of manufacture.

Shop the Painting & Decorating range from Heavins.ie for sealants, coatings, and surface preparation products delivered across Ireland.

Key Features

Self-Levelling Formula - flows into gaps and cracks up to 6mm, drying to a smooth, flat finish.
Brush, Roll, or Pour Application - no specialist tools required; suits both tradespeople and DIYers.
Wet or Dry Surface Use - can be applied to damp or dry surfaces for year-round repairs.
Temperature Performance - apply between 10°C and 48°C; cured coating withstands -40°C to 60°C.
UV Resistant - resists degradation from sun exposure for lasting outdoor protection.
Paintable Finish - compatible with latex paint directly; use a primer before applying oil-based paint.
Flexible Rubberised Coating - moves with the surface to prevent cracking over time.
Full Cure in 24-48 Hours - reaches full waterproofing performance within one to two days.

Specifications

• Brand: Gorilla
• Product: Waterproof Coat & Seal Liquid Rubber Coating
• Colour: Black
• Volume: 473ml
• Application method: Brush, roller, or pour
• Application temperature: 10°C to 48°C
• Cured temperature range: -40°C to 60°C
• Full cure time: 24-48 hours
• Maximum gap size: 6mm
• UV resistant: Yes
• Paintable: Yes (primer required for oil-based paint)
• Shelf life (unopened): Approximately 2 years from manufacture
• Dimensions (HxWxD): 88 x 88 x 112 mm
• Weight: 0.605 kg
• EAN: 5704947011987
• Warranty: 1 Year

We are pleased to offer FREE delivery on orders over €499.00 to anywhere in the Republic of Ireland and Northern Ireland, and our Click & Collect service is FREE on all orders.

All items are shipped from the Athlone Warehouse in Co. Westmeath, Ireland so no import duties apply to the island of Ireland.

Delivery Costs to Republic of Ireland are €6.99 for orders Under €499.00

Same Day Dispatch €9.99
Orders placed before 12pm are dispatched the same working day, helping your items reach you sooner. Excludes bulky items.

Large Bulky Items
Please be aware that large, bulky items (large appliances, white goods, etc.) have a delivery charge of €39.99 for bulky items or €59.99 for extra bulky items to ROI

- We are now delivering to Northern Ireland with all delivery costs equal to the Republic of Ireland.

View our full Delivery & Collection information

Due to our valued customer feedback, we have updated and improved our Returns Policy.

We now offer an exhange or refund on goods purchased online, and returned 14 days after purchase. 

View our Full Returns Policy