Sikaflex 290 DC PRO Professional Deck Caulk is a durable, one-component, polyurethane-based marine sealant that is specifically formulated for caulking joints in traditional timber marine decking jobs. Supplied in a convenient 300ml cartridge, it is suitable for professional boat building, yacht construction and commercial shipbuilding applications.
Developed to withstand demanding maritime environments, Sikaflex 290 DC PRO provides excellent resistance to weathering, seawater and freshwater. Its robust and durable formulation makes it particularly suitable for highly exposed deck joints where reliable, long-lasting performance is essential.
The compound offers ideal flow characteristics and an extended tooling time, helping experienced users achieve clean, consistent joints across timber marine decking. Once cured, it forms a flexible elastomer that accommodates movement while maintaining an attractive and traditional caulked-deck appearance.
Sikaflex 290 DC PRO can be sanded quickly and easily after curing, supporting an efficient finishing process and smooth, professional results. It also meets the applicable requirements established by the International Maritime Organization.
Applications: Caulking joints in traditional timber marine decking, professional boat and yacht construction, commercial shipbuilding and deck installation, sealing highly exposed open joints in maritime environments.
Code: 10367
Customer Reviews5.05 5.0/5 Based on 1 review
CaulkingReviewed by Peter on 26 Aug 2025
Good product. Follow the manufacturer notes and it will work well.
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.
