
Cladco High Strength Adhesive Sealant (290ml)
For projects that require a strong, waterproof bond you can rely on, Cladco high-strength adhesive sealant (290ml) offers durable performance across roofing, decking, and cladding installations. Supplied in an easy‑to‑use cartridge, it’s well suited to securing metal flashings, decking trims, cladding trims and finishing components where a clean, long‑lasting seal is needed.
About Our Cladco High Strength Adhesive Sealant (290ml)
Creating a secure bond while maintaining a neat finish is essential when working across exposed building elements. Cladco high-strength adhesive sealant is a versatile, waterproof solution used across roofing applications, as well as when installing decking and cladding trims where durability and flexibility are required.
Supplied in a convenient 290ml cartridge, this adhesive sealant delivers strong adhesion across a wide range of substrates, including metal, wood, plastic, concrete, and similar construction materials. Its flexible formulation, combined with excellent UV resistance and anti‑mould properties, helps maintain performance even when exposed to the elements.
On roofing projects, it’s commonly used to secure metal roof flashings and accessories such as foam eaves fillers, as well as for sealing minor repairs.
Benefits of Cladco High Strength Adhesive Sealant
- Waterproof adhesive suitable for internal and external use
- Provides strong, durable bonding across multiple substrates
- Ideal for roofing flashings, fillers, and accessories
- Well-suited to fixing trims in decking and wall cladding systems
- UV-resistant with anti‑mould properties
- Can be painted over once cured for a seamless finish
Once cured, the sealant can be painted over, allowing it to blend seamlessly with surrounding materials for a clean final appearance. For best results and controlled application, we recommend using a sealant gun.
Please note that the nozzle supplied has a flat cut, rather than a V‑cut.
Always consult the technical data sheet for full usage details and observe standard industrial hygiene practices. If you’re unsure about material compatibility, we recommend carrying out your own suitability testing before use.
Specifications
- Volume: 290ml
- Colour: White
- Application: Adhesive sealant
- Compatible with: Metal, wood, plastic, concrete, and more
- Finish: Paintable once cured
Storage & Safety
When unopened, Cladco High Strength Adhesive Sealant can be stored for up to 12 months in a cool, dry environment. The recommended storage temperature is 5°C–25°C.
Important allergy information: This product contains trimethoxyvinylsilane, which may cause an allergic reaction.
Are you in the trade?
If you’re a trade customer, you can purchase Cladco high-strength adhesive sealant (290ml) in boxes of 12 for bulk orders.
Order A Sample Pack!

For your Fencing project, square meterage is calculated by multiplying the total height of your fence by the total length of the boundary being fenced.
As each Composite Fencing Panel provides 0.72m coverage once installed, divide the square meterage by 0.72 to work out the total number of Panels required for your Fencing project.
Please note that our Composite Fencing Posts measure three metres in height, and, once installed, will allow for a maximum height of two metres, which equates to ten Panels.


Download the datasheet for Cladco High Strength Adhesive Sealant (290ml)
| Type | When? | Cost? | ||
|---|---|---|---|---|
| National Delivery | Orders under £1,000 | Est. 5 working days* Roofing items 7-10 working days* |
£192.00 | |
| Orders over £1,000 | Est. 5 working days* Roofing items 7-10 working days* |
£96.00 | ||
| Orders over £1,500 | Est. 5 working days* Roofing items 7-10 working days* |
FREE | ||
| Scotland Delivery | Postcodes: PA, PH, DD, AB, IV, & KW | Est. 15 working days* Roofing items 7-10 working days* |
£360.00 | |
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| Millboard Delivery | Orders under £2,000 | Est. 5 working days* | £192.00 | |
| Orders over £2,000 | Est. 5 working days* | FREE | ||
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| Parcelforce Standard | (Small Parcels) | 3-5 working days* | £10.30 | |
| (Large Parcels) | 3-5 working days* | £31.80 | ||
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| Sample Packs via Courier | 5 working days* | FREE | ||
*Please allow for public holidays and weekends (non-delivery days)
Some of our products are available for collection from our warehouses in Okehampton (Devon) and Andover (Hampshire) - This option will show at checkout, when available.
Standard collection lead time is 3-5 working days, this may vary depending on the product. If you would like to collect your order after 2 hours, please choose this option at checkout.
Please note that collections are only available from Monday-Friday, 08:00 - 17:00 & Saturday, 08:00 - 12:30 (Note: this IS the cut off time for collections, despite our closing time of 13:00)
Please Note The Following Prior To Collection:



Vehicles we can and cannot load
Cladco Profiles® will only load flatbed lorries and flatbed trailers for insurance purposes. If the appropriate vehicle is not available, two people would be required for a collection.
Cladco Profiles® will NOT load any vehicles with roof racks, horse boxes, cattle lorries or fixed-sided trailers. Cladco Profiles® has the right to refuse loading a vehicle for any reason.
Before arranging a collection, please read our Customer Collection Notice below.

Our Okehampton HQ and Warehouses (Devon)

Our Andover Warehouses (Hampshire)








Customer Collection Notice
Please ensure you have pre-booked your collection slot before travelling to site.
When arriving to collect your order, please report to a member of our Warehouse Team who will register your arrival and locate your goods. Once ready, your items will be picked and brought to your vehicle loading area.
During busy periods, there may be a short wait while our yard team assist other customers or complete other loading tasks. We always do our best to work within your booked collection time.
We respectfully draw your attention to the following important points:
- Loading is ultimately the customer’s responsibility. While our team can assist with mechanical loading using forklifts, we cannot handball items into enclosed vehicles. Customers must ensure their vehicle is suitable and that goods are safely loaded and adequately secured before leaving the premises.
- Sharp sheeting, metal goods, and long/heavy items may pose additional handling risks. Please come prepared with high-quality protective gloves, and any appropriate protection materials to avoid damage to your vehicle or restraints (e.g. ropes or straps). The edges of roofing sheets and metal products can be extremely sharp, and care should be taken when handling.
- We strongly recommend that customers bring their own straps, ropes, or other securing materials, as we are unable to provide these at the point of collection.
- If you are unsure of your vehicle’s load capacity, we can advise the approximate weight of your order in advance. It is your responsibility to ensure your vehicle is suitable for transporting the goods safely and legally.
- Cladco will not be held liable for any damage to your vehicle or goods once they have been loaded and leave our premises. Loading assistance is provided entirely at the customer’s own risk.
Click & Collect – Pre-Booking Required
You are welcome to collect your order from either our Okehampton (Devon) or Andover (Hampshire) site. All collections must be pre-booked in advance so your items can be picked, packed and ready for you.
Please do not travel to site without a confirmed collection time, as we cannot guarantee your order will be available.
Once your items are ready, you will receive an email with a link to book your collection slot. Please note, same-day collections are not available and bookings must be made at least two hours in advance.
When you arrive, please bring your order confirmation and follow the signage to the collection area where a member of our team will assist you.
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