G4 Black
G4 Black is a moisture-curing polyurethane coating designed to seal and waterproof concrete or rendered ponds. It provides a tough, durable black finish suitable for new builds and refurbishments.
Price range: £41.95 through £555.95
Product Description
Sealing a concrete pond properly is critical before you introduce water or fish. G4 Black is a moisture-curing polyurethane coating designed to create a waterproof barrier with a durable black finish.
Why choose G4 Black?
- Moisture-curing polyurethane formula
- Designed for waterproofing concrete and rendered ponds
- Provides a durable black finish
- Suitable for new builds or pond refurbishments
A properly applied seal coat protects the structure and prevents long-term water ingress into the substrate.
Application notes
- Surface must be clean, dry and free from dust or grease
- Apply according to manufacturer instructions
- Observe recommended overcoating and curing times
- Allow full cure before filling the pond
Correct preparation determines performance. Poor surface prep is the most common cause of failure.
Safety guidance
- Use in well-ventilated areas
- Wear appropriate gloves and protective clothing
- Follow all curing times before introducing water or fish
Never fill the pond until the product has fully cured.
A properly sealed pond gives you the confidence to build filtration and stocking on a stable foundation.
Delivery Details
Delivery Charges
We offer two simple delivery options:
- Free shipping on all orders over £75
- Flat rate of £3.95 for lighter parcels on orders under £75
- Flat rate of £5.50 for heavier parcels on orders under £75
All deliveries are sent via Royal Mail, ensuring reliable and trackable service.
Delivery Times
Orders are usually dispatched within 1–2 working days. Once shipped, Royal Mail typically delivers within 2–4 working days. Please note that during peak times or in the event of postal delays, delivery may take slightly longer.
Delivery Locations
We currently ship to UK addresses only, including mainland UK and Northern Ireland.
Questions?
We’re here to help. If you have any questions about your delivery, email us at mskoiltd@outlook.com and our customer service team will be happy to assist.
Free delivery on orders over £75
Enjoy free standard delivery when you spend £75 or more.
Easy
Returns
Hassle-free returns if something is not quite right.
Same Day Dispatch
Orders placed before 2pm are dispatched the same day.
Dedicated Support
Friendly support whenever you need help or advice.
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