Extoseal Encors is an exceptionally flexible butyl rubber flashing tape that delivers airtight and watertight seals where they matter most.
Ideal for weatherproofing window sills, door thresholds, and areas exposed to standing water, this tape’s high elasticity allows it to easily shape around corners and junctions while providing reliable, long-lasting protection against leaks and the elements.
Application
Extoseal Encors bonds effortlessly to all Pro Clima membranes, tapes, and airtight accessories, as well as:
- Planed or painted wood
- hard plastics
- metal
- wood-based panels (chipboard, OSB, plywood, MDF)
- wood fibre insulation
- concrete
- both plastered and bare masonry.
For best results on wood fibre boards, use Tescon Sprimer first.
Ensure surfaces are clean, dry, and free from grease or silicone for optimal adhesion. Concrete and plaster should be solid and stable, not loose or crumbly, to guarantee a strong, lasting bond.
Functionality
Extoseal Encors safeguards building components with permanent, flexible airtight and watertight seals at window and door junctions, preventing water ingress and weather damage.
Pro Clima Extoseal Encors is designed for maximum flexibility and adheres to a wide variety of surfaces found on site. It stretches, moulds, and conforms perfectly to irregular shapes, corners, and edges—delivering a tight weatherproof seal every time. Thanks to its robust butyl layer and stretchable carrier film, it maintains airtight and watertight performance even when pulled or shaped.
With dual release strips, Extoseal Encors offers precise application—stick the narrow side first, then stretch and position the rest before securing for a perfect fit.
The butyl rubber adhesive penetrates deeply for a secure hold. After stretching, it resists shrinking or retraction, minimising the risk of air or moisture leaks over time.
Benefits
- UV-resistant for up to six months of exposure during construction, providing flexibility for project timelines.
- Extremely flexible and stretchable—maintains full airtight and watertight sealing performance even when shaped to fit complex details.
- Stays in place permanently without retracting or losing its seal, even after stretching.
- Protects structural elements from water ingress, with tested resistance to driving rain up to 2400 Pa for robust weather protection.
- Bonds powerfully even to slightly damp or cold surfaces, making installation possible in less-than-ideal site conditions.
- Ideal for sealing around penetrations, such as nails and screws, to ensure a continuous barrier against leaks.
- Easy to handle and faster to install than traditional EPDM alternatives, saving valuable time on site.
System Warranty
Pro Clima offers a limited system warranty for its airtightness products, supported by public liability insurance. When properly installed with approved thermal insulation and Pro Clima system products, a 10-year warranty is provided. If combined with products from other manufacturers, a 6-year warranty is offered.
Documents
- Pro Clima Extoseal Encors Technical Datasheet PDF
- Pro Clima Extoseal Encors MSDS PDF
- Pro Clima Extoseal Encors Installation Guide PDF
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