Würth UPVC Gap Filler and Sealant
Würth UPVC Gap Filler and Sealant
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Key Features
- Specially formulated for PVC applications, bonding readily to rigid and plasticised PVC as well as PVC-coated metals and brickwork.
- Exceptional joint strength with long-lasting, maintenance-free performance.
- Good adhesion to porous substrates, expanding its application scope.
- Water- and bacteria-resistant, UV-stabilised for reliable outdoor use.
- Fast curing with colour-fast finish, ensuring clean and durable results.
- Not suitable for expanding or foil-wrapped PVC or PVC trim.

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Shipping Information
Shipping Information
What Are My Shipping Options?
In-Store Pickup
In-Store pickup is available on all purchase. Pickups are available Monday - Friday between the hours of 9:00–17:00.
An email confirmation will be sent when your order is ready for collection.
Free Shipping
We offer free Standard (2-3 Days) shipping on orders within the United Kingdom on orders over £100. Please note, some large items that require specialist courier companies, such as large mirrors and palleted items are excluded from this deal.
Shipping Fees
We also offer shipping at the following rates:
Standard-Size Parcel
Standard (UK Only) - 2-3 Days - £2.99
Express (UK Only) - 1-2 Days - £4.99
International (EU) - 3-7 Days - £14.99
International (ROW) - 5-10+ Days -£23.99
Large Parcel
Standard (UK Only) - 2-3 Days - £2.99
Express (UK Only) - 1-2 Days - £4.99
International (EU) - 3-7 Days - £14.99
International (ROW) - 5-10+ Days - £69.99
Most UK orders will be sent using Royal Mail, with larger items being sent with DPD.
International orders within the EU will normally be dispatched with Royal Mail, DPD, or UPS.
International orders to the rest of the world will normally be sent with DPD or UPS.
Please note, international delivery charges are very volatile and subject to change. We will do everything in our power to honour the delivery fee, however, in some cases, shipping may increase in price. In this event, you will be given the offer to pay the difference or cancel the order and receive a full refund.
Please note, we may be subject to various rules and restrictions in relation to some international deliveries, and you may be subject to additional taxes and duties over which we have no control. If such cases apply, you are responsible for complying with the laws applicable to the country where you live and will be responsible for any such additional costs or taxes.
Dispatch Times
Orders placed before 15:00 Monday - Friday will be shipped on the same day.
Orders placed after this time will be shipped on the following business day,
Please note, we are closed at weekends, as well as English Bank Holidays.
Returns Policy
Our refund policy can be found at the following address: https://esupplyline.com/policies/refund-policy.
Further Information
You can contact us for further information on our shipping policies using the following:
Phone: 01953 711 881
Email: sales@esupplyline.com
Live Chat: Available on our website, Monday - Friday, 8:30 - 17:00.
Contact Form: https://esupplyline.com/pages/contact
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Description
High-Performance Gap Filler
Würth UPVC Gap Filler and Sealant is a professional-grade formulation combining PVC resins, pigments, plasticisers, and solvents to provide strong, durable joints. Designed specifically for bonding and filling rigid and plasticised PVC, it creates maintenance-free seals of exceptional strength and stability.
Versatile Application
The product bonds not only to PVC and PVC-coated metal but also to brickwork and many porous substrates, making it ideal for repair and finishing tasks in construction, glazing, and maintenance. It is resistant to water and bacteria and stabilised against UV degradation, ensuring long-term reliability in external applications.
Fast Curing, Clean Finish
The filler cures rapidly, forming a colour-stable joint resistant to yellowing and weathering. During the curing process, some shrinkage will occur as solvents evaporate, which is normal and expected. For best results, excess material should be removed immediately after application.
Limitations
This product is not suitable for use on expanded or foil-wrapped PVC or PVC trim. It should not be smoothed using fingers or tools, as this can compromise curing and finish quality.
More Information
Application Instructions
- Ensure all surfaces are clean, dry, and free of contaminants.
- Cut away the sealed tip of the cartridge, or pierce the membrane if using a capped version.
- Attach the tapered applicator nozzle and trim to the desired size.
- Apply a continuous bead of filler into the joint or aperture.
- Leave the product to cure. Curing time will vary depending on the joint dimensions, temperature, and weather conditions, and may extend over several days.
- Do not attempt to smooth the bead with fingers or tools.
- Remove any excess immediately.
- After use, reseal the cartridge nozzle or replace the cap to prevent curing inside the tube.
Safety and Usage Notes
- Expect some shrinkage during curing due to solvent evaporation.
- Store product in a cool, dry environment.
- Always avoid application on unsuitable PVC types (expanded or foil-wrapped).
Specifications
Chemical basis: Butanone
Contents: 132 ml
Colour: White
Continuous motion absorption: 0 %
Min./max. temperature resistance: 0 °C to +35 °C
Min. skin-formation time: 1 hour
Ultraviolet resistance: UV-stabilised
Recoatable/Can be painted over: No
Full curing speed: 1 km/h (application rate dependent)
Shelf life from production: 6 months