The Sikaflex 291i Marine Sealant is a trusted, professional-grade, multifunctional adhesive sealant for the marine market that delivers durable, flexible bonding and sealing performance in demanding environments. Supplied in a convenient 300ml cartridge, this high-performance polyurethane (PU) sealant is widely-used across the marine industry and boat building for its exceptional versatility, strength and long-lasting elasticity.
Formulated as a 1-component solution, Sikaflex 291i is easy to apply and cures to form a highly elastic, vibration-resistant seal. It is ideal for both above and below waterline applications, offering excellent resistance to saltwater and harsh marine conditions. Whether you're bedding deck hardware, sealing joints or bonding components, this sealant ensures reliable adhesion across a wide range of marine substrates including wood, metals, painted surfaces, ceramics and GRP plastics.
With its low odour, solvent-free composition and very low VOC and isocyanate content, Sikaflex 291i is safer and more pleasant to work with compared to traditional sealants. It is also non-corrosive and can be painted or sanded once cured, allowing for a clean, professional finish that integrates seamlessly with surrounding materials.
Applications: Bedding and sealing deck hardware, sealing and bonding joints in hulls, keels and stern tubes, general-purpose marine sealing tasks, sealing plumbing and sanitary installations onboard, bonding deck to hull structures, installing and bonding anti-slip decking systems such as Marine Deck 2000.
Code: 10204
Fibreglass Supplies use Royal Mail, APC Overnight and the National Hazardous Pallet Network for our Next Day Delivery Services.
Royal Mail
Orders of up to 2kg will usually be sent using a Royal Mail First Class Service for National Next Day Delivery.
APC Overnight
Orders over 2kg and up to 30kg will be sent using a Fully Tracked Next Day Service using APC Overnight. Some smaller Roofing Kits that weigh up to 30kg in Total would be sent on this service. This includes Resins, Gelcoats and Topcoats which are classed as Hazardous and are decanted into 5kg Tins or Pales to comply with the Transportation of Hazardous Goods Act.
Pallet Network
All our larger orders by weight would usually be sent using the National Pallet Network. Non Hazardous Items can be sent using either the Pallet Network or APC Overnight.
All Hazardous goods over 30kg (which includes Roofing Kits over 30kg in total weight) are usually sent using the National Pallet Network on a Fully Trackable Next Day Delivery Service.
Click & Collect
All orders are eligible for Click & Collect. Pick up your items conveniently from our Cattedown Store, available Monday to Friday between 7:30 am and 4:30 pm (excluding Bank Holidays).
NB - Please note that our Direct Control of the Delivery Element extends to making sure we pick pack and dispatch all orders on time. As we have no Direct Control over the performance of any individual courier we would not be responsible for refunds due to the late arrival of any order.
We always work hard with customers to overcome any issues that arise so please call us if you do have any concerns with regard to tight delivery deadlines so that we can provide great advice if needed.
Please read our Returns policy laid out below.
Under the Consumer Contracts Regulations 2014 you are entitled to return goods within 14 days of delivery for a refund of the cost of the goods. The delivery costs and any packaging are not included in the refund. The returned goods should be in the original containers and unopened. It is the customers responsibility to pay for the cost of returning goods to our Business Premises.
Some of our products are made to order and as such once ordered are non refundable and non returnable. These include coloured gelcoats, topcoats and resins.
These Consumer Regulations do not apply to business purchases (B2B). However we will always help in any way and look to find a suitable and mutually acceptable solution should any issues arise through the order process.
It is the customers responsibility to understand the suitability of the product before its use. Technical and Safety Data Sheets are available for all products where applicable. These can be found on most product description pages or if not are available on request. If you are unsure please do not hesitate to contact us for expert advice and product suitability and application.
To organise a return please contact us on the following.
