Less drag
A clean, low-friction underwater surface helps reduce resistance through the water.
Hempel Silic One fouling-release system
Silicone + hydrogel / Biocide-free protectionLESS RESISTANCE.
MORE FREEDOM.
Meet the silicone coating that makes it harder for fouling to hold on. Explore the benefits, choose your colour and build the right Silic One system for the hull, propeller and seasons ahead.
Silicone fouling releaseSILIC ONEShop the finish
Release fouling. Reduce resistance.A DIFFERENT
A DIFFERENT
KIND OF
HULL PROTECTION.
Hempel Silic One is a biocide-free silicone coating whose ultra-slick surface stops fouling from getting a grip. Less drag means more speed and less fuel burned, so you get more from every trip. Upkeep is easy: rinse, inspect and recharge with Hempel Infinity each season for up to two years of protection without repainting. Antifouling a boat can be a drag, not with Silic One.
a smoother surface.
Fuel-saving potential
Lower hull friction can help reduce fuel use. The result depends on the boat, coating condition, operating pattern and comparison baseline.
Biocide-free finish
Silic One’s finish is biocide-free and copper-free. Fouling control comes from the silicone and hydrogel surface.
Simpler upkeep
Plan suitable cleaning, inspect the coating and choose the right maintenance treatment as the seasons change.
See it on the boatTHREE COLOURS.
THREE COLOURS.
ONE SILICONE SYSTEM.
Try Hempel’s colour visualisation, then choose the matching Marathon product and pack size.
UNDERWATER FINISH / ILLUSTRATIVE COLOUR PREVIEWYour selected finish
Black 19990
Your selected finish
True Blue 30390
Your selected finish
Red 59151
Colours on screen are illustrative and may differ from the applied finish. Confirm the shade, pack size and product code before ordering. Hempel’s original boat artwork is used for the visualisation; it does not represent a boat-specific coating specification.
Your starting point decides the orderTHE RIGHT ROUTE.
01 / CONVERT 02 / PRIME 03 / PROPELLER 04 / MAINTAIN
THE RIGHT ROUTE.
THE COMPLETE SYSTEM.
Start with the surface already on the boat. Select the relevant route below to see the products to discuss, then check the current Hempel specification for that substrate and coating condition.
Sound existing antifouling
A conversion route can avoid stripping suitable, firmly adhering antifouling. Remove loose material, prepare the surface and use the specified conversion primer.
Conversion Primer / Silic Seal → Silic One Tiecoat → two Silic One finish coats
Read Hempel’s route guidance ↗Bare hull or an epoxy base
Use the appropriate epoxy primer specification. An existing epoxy base and a new bare substrate need different preparation and film-build checks.
Specified Light Primer system → Silic One Tiecoat → two Silic One finish coats
Read Hempel’s route guidance ↗Propellers & running gear
Remove old antifouling and prepare the metal correctly. The propeller route has its own Light Primer preparation and coat sequence.
Specified Light Primer coats → Silic One Tiecoat → Silic One propeller finish
Read Hempel’s route guidance ↗An existing Silic One system
Inspect and clean first. Sound coating may suit an Infinity recharge; damaged areas need repair and a worn finish may need recoating.
Clean & inspect → repair as needed → specified recharge or recoat
Read Hempel’s route guidance ↗Marathon lists the 45441 conversion product as Silic Seal; current Hempel guidance calls it Conversion Primer. Match the supplied product code to the current specification. An unsound coating is not a suitable conversion base. For new gelcoat, Hempel specifies an epoxy barrier system rather than a universal single primer coat.
Shop the directly associated productsEVERY PART
EVERY PART
OF THE SYSTEM.
Choose the finish and its supporting products. Primer and maintenance requirements depend on the route above.
77450 / FINISH
Silic One
Biocide-free silicone fouling-release topcoat. Select Black, True Blue or Red in the listed pack sizes.
Shop Silic One
27450 / ADHESION
Silic One Tiecoat
The silicone-based link between the specified Light Primer or Conversion Primer and Silic One.
Shop Tiecoat
45441 / CONVERSION
Silic Seal
Marathon’s conversion-primer listing for suitable existing antifouling in good condition.
Shop Silic Seal
45551 / EPOXY PRIMER
Light Primer
Two-component epoxy primer for the specified bare-hull, prepared epoxy and propeller systems.
Shop Light Primer
PROPELLER / KIT
Silic One Propeller Kit
Marathon lists a kit containing 375ml Tiecoat and 375ml Silic One. Compare the options with and without a primer package.
Compare kit options
77505 / MAINTENANCE
Hempel Infinity
Water-based recharger for a sound existing Silic One coating. It does not replace missing or damaged coating.
Shop InfinityComplete the preparation order.
Add the cleaner and tools specified for the chosen system. Silic One and Tiecoat must not be thinned.
Small surface. Important preparation.DON’T FORGET
DON’T FORGET
THE PROPELLER.
Hempel’s propeller route starts by removing old antifouling, cleaning and creating the specified surface profile. Apply the primer promptly after preparation to limit oxidation.
Choose the correct primer package, not just the finish kit. Marathon’s base kit listing contains Tiecoat and Silic One; the primer-inclusive option is listed separately.
Plan before opening the tinsTHE DETAILS THAT
THE DETAILS THAT
MAKE THE JOB WORK.
FINISH COAT ESTIMATOR
How much Silic One?
Enter the total underwater area to coat. The estimate uses Hempel’s theoretical spreading rate of 10 m² per litre per coat.
The 10% allowance is an adjustable example for practical losses, not a prescribed Hempel allowance. Results update as you change the figures.
Theoretical finish
Including your allowance
If choosing 2.5L tins
If choosing 750ml tins
Alternative single-size pack options, not a combined order. Pack counts round up to cover the estimate; no price or availability comparison is made.
Illustrative planning guide only. Use the measured total area, specified film thickness and current Hempel instructions. Actual consumption depends on surface condition, application method and losses. This calculates Silic One hull finish only; primer, Tiecoat, propeller work and repairs must be assessed separately.
Before you start
- Identify the substrate and existing coating.
- Confirm the primer system and required film build.
- Plan the weather, surface temperature and overcoating windows.
- Check pack contents, shelf life and enough material for each stage.
- Use the current product and safety data sheets supplied for the batch.
Silic One and Tiecoat are brush/roller products with no thinning. The current sheets specify a 60-minute pot life at 20°C and a surface temperature above 10°C during application and curing.
Key planning intervals at 20°C
| Stage | Current guidance at 20°C |
|---|---|
| Primer to Silic One Tiecoat | 2–4 hours for the specified Light Primer / Conversion Primer stage. |
| Tiecoat to Silic One | 8–48 hours. |
| Silic One to another Silic One coat | Minimum 16 hours. |
| Immersion after final Silic One coat | Minimum 24 hours; maximum one month. |
These intervals are not interchangeable with touch-dry or full-cure times. Different temperatures change the schedule. If a window is missed, follow Hempel’s remedial instructions.
Hempel’s official how-to filmsSEE THE SYSTEM
Watch on YouTube 
Watch on YouTube 
Watch on YouTube Watch on YouTube
SEE THE SYSTEM
IN ACTION.
Understand the technology, watch the conversion process and see the cleaning and recharge methods. Use the current written specification alongside the films.
Watch on YouTube How the technology works
Silicone and hydrogel fouling release, explained by Hempel.
Open video on YouTube Watch on YouTube Watch on YouTube Cleaning a Silic One surface
Watch Hempel demonstrate suitable coating cleaning.
Open video on YouTube Watch on YouTube Recharging with Infinity
See the maintenance process for an existing sound silicone system.
Open video on YouTubeWatch Hempel’s official films on YouTube. Each video link opens in a new tab.
Keep the performance. Simplify the routine.THE NEXT SEASON
THE NEXT SEASON
STARTS HERE.
Infinity recharges the performance of an existing Silic One coating in good condition for a further season, without repainting.
Clean and rinse the surface, let it dry, then apply as instructed. Hempel’s recharge process allows at least 24 hours before rinsing off with fresh water.
Match cleaning
to the boat.
Faster movement can assist fouling release. Slower boats and sailing yachts may need suitable cleaning more often. Use a dense sponge or cloth and fresh water; avoid hard brushes and abrasive tools that could damage the surface.
Repair before
you recharge.
Check the coating condition. Rebuild damaged system layers as required. Infinity is for existing sound coating; it cannot replace missing primer, tiecoat or finish.
Recharge
or recoat.
Hempel offers an Infinity recharge for a further season or a Silic One recoat maintenance route. Service intervals depend on condition, use, fouling pressure and time out of the water.
The practical questionsSPECIFY WITH
SPECIFY WITH
CONFIDENCE.
Is Silic One a conventional antifouling?
It is a silicone fouling-release system. It creates a low-friction surface that makes organisms less able to attach firmly, rather than relying on a biocidal finish.
How much fuel could my boat save?
Silic One can support fuel savings by reducing hull friction. The result depends on the vessel, fouling, coating condition and operating pattern. Compare like-for-like conditions on the same boat rather than assuming a fixed saving for every installation.
Can I coat aluminium with Silic One?
Hempel lists aluminium among the suitable substrates for the specified system. Confirm the full primer and preparation route for the particular hull or propeller. A suitable finish does not remove the need for correct metal preparation.
Can Silic One go straight onto old antifouling?
No. The conversion route uses a suitable existing coating in good condition, the specified conversion primer, Silic One Tiecoat and the finish. Loose or poorly adhering coating needs remedial preparation.
Do I need Tiecoat as well as primer?
Yes, the specified initial Silic One system uses Silic One Tiecoat between the compatible primer and finish. It has a different job from the epoxy primer and is not interchangeable with it.
Does the Propeller Kit include Light Primer?
Marathon’s base kit description lists 375ml Silic One Tiecoat and 375ml Silic One. Separate options are listed with and without a primer package. Check the exact option and its contents before ordering.
Can I leave it for two seasons without checking the hull?
No. Hempel positions Silic One with a two-year hull service life, alongside seasonal maintenance options. Inspection and appropriate cleaning still matter, and harsher conditions or extended time out of the water can change maintenance needs.
Can I return to traditional antifouling later?
Hempel says Silic One must be removed before switching back to traditional antifouling. Ask for the correct removal and re-priming process rather than coating directly over silicone.
Plan with the current guidance: UK Silic One system brochure · Silic One product data sheet · Tiecoat product data sheet
Marathon Leisure / Your trade-only distributorBUILD A BETTER
BUILD A BETTER
SILIC ONE ORDER.
Tell us the substrate, current coating, underwater area and whether the job includes propellers. We can help trade customers identify the relevant products and confirm pack options and availability.
Call 02392 637711 or email sales@marathonleisure.co.uk.
