Easy-to-use formula: Fernox F4 Leak Sealer is designed for quick and hassle-free application. It comes as a ready-to-use liquid that doesn't require any additional mixing or preparation, making it convenient for homeowners and professionals alike.
Effective sealing performance: This high-quality leak sealer is engineered to efficiently and reliably seal small, inaccessible leaks and weeping joints in hydronic heating systems. Its advanced formulation ensures a long-lasting and dependable sealing effect on various materials, including metal, plastic, and composite pipes.
Compatible with all metals and materials: The versatile Fernox F4 Leak Sealer is suitable for use in systems containing a wide range of materials, such as copper, brass, steel, iron, aluminium, and plastics. This makes it a perfect solution for diverse heating systems, regardless of their construction and components.
Non-toxic and environmentally friendly: Developed with safety and sustainability in mind, Fernox F4 Leak Sealer is non-toxic, non-corrosive, and non-flammable. Its eco-friendly formulation means that it is safe for use in all domestic heating systems and poses no harm to the environment.

Delivery Information

Thank you for choosing our services. We strive to ensure your orders are delivered to you swiftly and efficiently. Please find below our delivery information to guide you through the process:

Standard Delivery Charges:

  • Orders up to £150: £6.99
  • Orders over £150: Free Delivery

Surcharge for Certain Postcodes: Please note that certain postcodes may incur a surcharge due to logistical constraints or additional delivery charges imposed by our shipping partners. If your order falls within such postcodes, we will promptly contact you in advance to discuss the applicable surcharge and seek your confirmation before proceeding with the delivery.

Delivery Times: We aim to dispatch all orders promptly upon receipt and ensure timely delivery. Our standard delivery times are typically within 2 working days. However, please allow for additional time during peak seasons, bank holidays or unforeseen circumstances.

Tracking Your Order: Once your order is dispatched, you will receive a confirmation email along with tracking details, allowing you to monitor the progress of your delivery.

Delivery Partners: We work with trusted delivery partners to ensure your orders are handled with care and delivered to you securely.

International Delivery: Currently, we only offer delivery within the UK. For international orders, please contact our customer service team for assistance.

Should you have any further questions or require assistance regarding your delivery, please do not hesitate to contact our customer service team. Thank you for choosing us. We look forward to serving you.

Note: Delivery information is subject to change. Please call us for the most up-to-date information.

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