Nexoseal Mono is a premium, monolithic airtight sealing tape engineered by Partel to provide a secure and permanent seal for the building envelope. Designed for both interior and exterior use, this high-performance adhesive tape is a critical component in achieving superior energy-efficient standards, including Passive House (PHA) requirements.
Whether you are sealing membrane overlaps or complex junctions, Nexoseal Mono offers the robust protection needed to prevent air leakage and ensure long-term durability.
Key Features
- Advanced Adhesive Technology: Features a high-tack acrylic adhesive that ensures high adhesion to a wide variety of substrates, providing a permanent airtight bond that improves with ageing resistance. It can be apled on Timber panels: OSB, MDF, plywood, steel frames, concrete, masonry, PVC, and metal.
- Monolithic Backing: The elastic and breathable carrier allows for flexibility around corners and penetrations, ensuring the seal remains resilient even under structural movement.
- Weatherproof & UV Resistant: With excellent UV resistance and water-resistant properties, it can withstand harsh conditions externally, making it airtight and windtight.
- Vapour Management: Optimised for use with Exoperm breather membranes, it prevents moisture and damp ingress, protecting timber structures from decay.
Applications
NexoSeal Mono delivers a permanent, high-performance seal against air and wind infiltration for:
- Critical Connections: Perfect for membrane overlaps, joints, windows, doors, and structural penetrations.
- Versatile Construction: Optimised for timber frame, steel frame, and modular builds, whether new or retrofit.
- Dual-Environment Use: Engineered for both internal and external applications.
- Universal Compatibility: Bonds seamlessly to all Partel membranes (including EXOPERM), timber panels (OSB, MDF, plywood), concrete, masonry, PVC, and metal.
- Nexoseal Mono is a high-performance, breathable adhesive tape designed for airtight and weatherproof detailing in modern construction.
- NEXOSeal airtight tape is suitable for airtight joint sealing in accordance with DIN 4108-11
- Ideally used for sealing Exoperm membranes adn for sirtight detailing around windows, doors, and penetrations
- This airtigth sealing tape has a Breathable monolithic structure for vapuor-permeable detailing
- Suitable for timber frame, steel frame, and modular construction. Long-term durability and UV stability
- CE and UKCA certified
| Product Type | Airtight Sealing Tape |
| Product Code | Nexoseal Mono |
| Brand | Partel |
| Length | 25M |
| Width | 60mm, 100mm,150mm, 200mm, 250mm, 300mm |
| Reaction to Fire | B-s1,d0 |
| SD Value | 0.26m |
| Weight | 250 g/m2 |
| g value | 1.3 MNs/g |
| Vapour Permeance | 13 US PERMS |
| Delivery Terms | |
|---|---|
| Order Value (Excluding VAT) | Delivery Condition |
| Orders below £620 | £35 |
| Orders between £620- £1230 | £30 |
| Orders between £1231- £2460 | £28 |
| Orders Above £2460 | Free Delivery |
Cancellations, Returns And Refunds:
- You are free to cancel your order before we send you an order confirmation email with an estimated delivery date, and get a full refund
- Once the order is confirmed and an estimated delivery date is issued via email, Orders cannot be cancelled.
- Incorrectly ordered doods can be returned within 14 days of delivery at our discretion. The customer is responsible for ensuring the goods are returned back to the address provided, in good condition where they will be inspected prior to processing any refunds. Restocking fee may be applied
- For incorrect, damaged or faulty products, please contact us immediately after you receive delivery and we will assist accordingly.

