Interlux Bottomkote
Interlux Interlux
  • Interlux Bottomkote

Interlux Bottomkote Pro

Interlux Bottomkote Pro is the proven choice for boatyards requiring economical, dependable, seasonal antifouling protection, and is a direct replacement for Tarr & Wonson Gloucester Bottom Paint. Bottomkote Pro is a sloughing style soft paint that can be applied over all types of properly prepared substrates, except aluminum. This proven standard (old Tarr and Wonson formula) all-purpose antifouling paint is ideal for work boats or cruising boats. Includes copper for dependable, low-cost protection with easy cleaning.

Bottomkote's soft paint film slowly wears away for minimal build-up.

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Tech Spec Product Info User Generated Content

PREVIOUSLY PAINTED SURFACES: Remove all traces of loose paint and contamination by sanding the entire surface with 80 grit wetor-dry sandpaper; wipe surface clean with Special Thinner 216. Apply at least 2 coats of Bottomkote Pro.
In Poor Condition Completely remove all old antifouling paint using Interstrip 299E for fiberglass and wood, and by sandblasting to near white metal for steel.

BARE FIBERGLASS: It is very important that bare fiberglass be properly prepared to prevent delamination of the antifouling paint. Remove mold release wax using one of the following Interlux products, Fiberglass Surface Prep YMA601 or Fiberglass Solvent Wash 202 following the product label instructions. Fill any surface imperfections with Interlux Watertite following the label instructions. After the surface has been properly cleaned, follow one of the application systems below.
BARE FIBERGLASS - NO SANDING SYSTEM Clean the surface following the preparation procedure above. Apply one coat of InterProtect 2000E or Fiberglass No-Sand Primer following the label instructions for applying the primer and overcoating with antifouling paint. Apply at least two coats of Bottomkote Pro allowing appropriate drying times.
BARE FIBERGLASS - SANDING SYSTEM Clean the surface following the preparation procedure above. Sand entire surface well with 80 grade (grit) paper until flat matte finish is obtained. Remove sanding residue and wipe with Fiberglass Solvent Wash 202. Apply at least two coats of Bottomkote Pro allowing appropriate drying times.
Blister Prevention System: Apply the Interprotect system for the prevention of blisters. Contact the Interlux Technical Service Department at 1-800-468-7589 or visit for complete instructions on the application of The InterProtect System.

BARE WOOD: Sand with 80 grade (grit) paper. Clean with Special Thinner 216. Thin first coat with 10-15% with BrushEase 433 or Special Thinner 216. Fill seams, if necessary, with Seam Compound Brown 30.

STEEL: Contact Interlux for further details.

Method At least 2 coats should be applied.

Mixing Stir or shake contents thoroughly before use.
Thinner Special Thinner 216 or Brush-Ease 433.
Thinning Thin only if necessary. Thin no more than 10%. Use Brush-Ease 433 if roller or brush drags during application.
Cleaner Painted Surfaces - Special Thinner 216. Bare Fiberglass - Fiberglass Solvent Wash 202 or Fiberglass Surface Prep. Bare Wood - Special Thinner 216.
Airless Spray Tip Size: 0.53-0.66 mm/21-26 thou. Pressure: 170-204 bar/2500-3000 psi.
Conventional Spray Pot Pressure: Tip Size: 1.8-2.2 mm/70-85 thou. Pressure: 4.08-4.76 bar/60-70 psi (gun pressure); 10-15 psi (pot pressure).
Roller Use a 3/8" nap solvent resistant roller.
Other Take care to apply all the paint calculated even if it means applying an extra coat. It is not legal to spray Bottomkote Pro in Canada.

Some Important Points Not suitable for use over aluminium/alloy substrates. Colors may fade or change above the waterline. Product temperature should be minimum 10°C/50°F and maximum 29°C/85°F. Ambient temperature should be minimum 10°C/50°F and maximum 29°C/85°F. Substrate temperature should be minimum 10°C/50°F and maximum 29°C/85°F

Compatibility/Substrates Apply to clean, dry, properly prepared surfaces only. Suitable for fiberglass, wood and painted surfaces. Do not apply over tin-based copolymer antifouling paints. Do not use under vinyl based antifouling paints such as VC Offshore, Baltoplate or TBT based antifoulings such as Micron 33.

Number of Coats 2 Bare Wood: 3 coats (first thinned)

Coverage (Theoretical) - 508.9 (sq ft/Gal)

Recommended DFT 2.0 mils dry
Recommended WFT 3.2 mils wet

Application Methods Airless Spray, Brush, Conventional Spray, Roller


  • Finish: Matte
  • Specific Gravity: 1.65
  • Volume Solids: 64%
  • Typical Shelf Life: 2 yrs
  • VOC (As Supplied): 330 g/lt
  • Unit Size: 1 US Gallon
  • Number of Coats: 2-3 minimum, Bare Wood- 3 coats (first thinned)


Drying Information  50 Degrees F  73 Degrees F  95 Degrees F 
Touch Dry (ISO)  3 hours  2 hours  1 hour 
Immersion  16 hours  16 hours  16 hours 
Overcoating Time  16 hrs min-72 hrs max  12 hrs min-72 hrs max  8 hrs min -72 hrs max 

TRANSPORTATION: Bottomkote should be kept in securely closed containers during transport and storage.

STORAGE: Exposure to air and extremes of temperature should be avoided. For the full shelf life of Bottomkote to be realised ensure that between use the container is firmly closed and the temperature is between 5 deg C/40 deg F and 35 deg C/95 deg F. Keep out of direct sunlight.

DISPOSAL: Container Disposal: Triple Rinse (or equivalent). Then offer for recycling or reconditioning, or puncture and dispose of in a sanitary landfill or by other procedures approved by state or local authorities. Pesticide Disposal: Open dumping is prohibited. Pesticide, spray mixture or rinsate that cannot be used or chemically reprocessed should be disposed of according to procedures approved by Federal, state, or local disposal authorities. Antifoulings should only be wet sanded. Never dry sand or burn-off old antifoulings. Spraying of antifouling paints is prohibited in Canada.

BRAND: Interlux
Number Of Parts: One Part
Type: Copper AF Paint
4.0 2
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