fiberglass repair kits

Fiberglass is one of the toughest materials out there, but sometimes accidents happen.  Luckily, with 1L  and 4L Fiberglass Repair kits, we have everything you need, boxed up and ready to go. See the instructions below.

4L Kit - $120

4L Marine Resin 

50ml Hardener

6yds Chopped Strand Mat 

Fiberglass Roller

Disposable Gloves

Disposable Brush

Sand Paper

Dust Mask

Stir Stick

30ml Measure Cup

1L Kit - $60 

1L Marine Resin

50ml Hardener

2yds Chopped Strand Mat 

Fiberglass Roller

Disposable Gloves

Disposable Brush

Sand Paper

Dust Mask

Stir Stick

30ml Measure Cup

Follow these instructions.  Got questions? Call us.

Damage Control 

• How large is the hole or breakage?
• Look for stress cracks that may extend past the visual damage.

Surface Prep

• Use sandpaper provided  to rough up the area around the damage.
• Wipe down with Acetone (not included in kit).

Material Prep 

• Cut your Mat to extend 3-4" beyond the damage. 
• The more overlap the greater the bond between new and old material.
• Cut larger diameter pieces to build to required strength.
• 1L Kits include 2yds Mat (9.5sqft)
• 4L Kits include 6 yds Mat (19sqft)

Resin Prep 

• Measure the required resin based on the the quantity of pre-cut mat.
• Use the ratio of resin to mat in the kit as a guide
• ie. 1yd of mat would require 1/2 the resin(500ml) from the 1L kit.

Resin+Hardener Mix 

• Add 1.5-2% Hardener to Resin (15-20ml per 1000ml)
• Measure with the 30ml cup provided
• Mix thoroughly with stick provided
• Working time may vary based on hardener volume and temperature
• Mixing multiple smaller batches allows more time than a single large batch

Apply Material 

• Brush a coat of the catalyzed resin over the damaged area.
• Make sure you extend the resin 3-4" beyond the repair.
• Lay the pre-cut mat over the repair area. 
• Brush another coat of the catalyzed resin over the mat.
• Repeat with additional, larger pieces to build required strength.
• Continue to brush coats of resin on subsequent layers of mat.
• When layers are wet out, roll out the air bubbles with the fiberglass roller.
• Once cured, repeat these steps if the reverse side if applicable.  

Cleanup

• Clean your fiberglass roller with Acetone (not Included in kit)
• Acetone will not be effective after the resin cures.

Gelcoat (Not Included in Kit)

• Fiberglass requires gelcoat paint to protect it from UV and to seal the new repair.
• Gelcoat is available in a variety of colors in  1L, 4L and 20L at OP Fiberglass.

Disclaimer: The instructions contained herein and provided by OP Fiberglass is considered accurate. However, no warranty is expressed or implied regarding the accuracy of the info, the results to be obtained by the use thereof, or that any such use will not infringe any patent. Before using, user shall determine the suitability of the product for the intended use and user assumes all risk and liability whatsoever in connection therewith.