Jesmonite Gloss Sealer is a high-performance, pure acrylic coating designed to deliver a durable, high-gloss finish across the full Jesmonite product range. Compatible with all Jesmonite composites from AC100 through to AC830, this versatile sealer enhances surface appearance while providing effective protection against water ingress and staining.
Formulated to remain flexible and hard-wearing, Jesmonite Gloss Sealer has been developed in response to demand for a true gloss finish that does not compromise durability. Once applied, it creates a smooth, reflective surface that enhances colour depth and surface definition, making it ideal for decorative, architectural and design-led Jesmonite projects.
The sealer is easy to apply by brush, roller or spray and can be diluted with water to achieve different finish effects and improved adhesion. For optimal performance, a two-coat system is recommended, with the first coat diluted to support bonding and the second applied while the surface remains touch dry. When applied correctly in thin, controlled layers, a small amount of product goes a long way, ensuring excellent coverage and professional results.
Jesmonite Gloss Sealer is suitable for overcoating and long-term maintenance. In normal conditions, treated surfaces typically require reapplication every 6–10 years, although more frequent re-coating may be required where regular cleaning or heavy use occurs. Prior to reapplication, surfaces should always be clean, dry and free from dust or contaminants.
Application Guidance:
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.
