Product Details

G10 fiberglass boards are made of a special glass epoxy laminate that has extremely high strength. G10 fiberglass is used in marine applications due to its superior strength, moisture resistance, and excellent electrical and fire insulation.

Fiberglass boards make excellent non-corrosive backing plates for high load deck hardware or bond to engine room bulkheads to hold mounting brackets. G10 boards are sold in 1/4 and 1/2 inch thickness.

G-10 is similar in strength and density to starboard, but because it is formed from epoxy resin, it bonds easily using most two-part epoxies.

Available in Backing Plate sizes and full sheets.

Info & Guides

Technical Information

  • FR-4 Grade fire resistance
  • Low moisture absorption
  • Rated to 285 F continuous operating temperature, will not melt at high heat
  • Resists chemicals
  • High impact strength
  • High tensile strength
  • High dielectric strength
  • High flex strength and dimensional stability

Reviews for G10 Fiberglass Board

10 of 26 Reviews

May 20, 2022

Versatile Strong & Hard (but eats cutting blades)
By Robo Nav from Seattle, WA

Bought the 6 pc package of the 1/4 x 12 x 12 plates. Drills easily. Miter saw cuts well. Even sands easily. Eats jigsaw blades like there's no tomorrow - best I found is using blades for cutting sheet metal, but that still only gets you about 10" per blade. Great material!

Bottom Line Yes, I would recommend to a friend

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January 21, 2022

I would certainly buy this product again
By Refurbishing the Kathleen from Ventura, CA

Verified Purchase

My sailboat had no backing plates on any of the stanchions or railing fittings. I found these products perfect for this application. The boards were easy to cut and drill and due to there construction would not suffer from exposure or any water intrusion.

Bottom Line Yes, I would recommend to a friend

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November 10, 2021

Plug
By Steve from Maine

Verified Purchase

I bought this to plug a hole in the dash of my boat. The previous owner had cut a hole and I needed to fill it. Worked perfectly.

Bottom Line Yes, I would recommend to a friend

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June 14, 2020

Backer plate for stem head on a dinghy
By rictifyit from Illinois

Verified Purchase

backer plate, plain and simple. I like how you can sand down the sharp edges of it to fit the contour of your application. It also drills easy, but it doesn't flex at all! Great backer plate, although if you're buying only one, the shipping will ding you. I found that a bit ridiculous.

Bottom Line Yes, I would recommend to a friend

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June 10, 2020

Tough material worked perfectly
By Big Al from Chicago

Verified Purchase

Worked great for my use, replaced the bottom of my fiberglass boat exhaust. I used a jig saw to cut the material when through a lot of blades

Done
Installed
Cut out
Glassed in
Bottom Line Yes, I would recommend to a friend

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June 1, 2020

Tough material, perfect for my repair
By Big Al from Chicago

I used the G10 board 1/4" thickness to replace the bottom of my wet exhaust muffler. It was perfect. I cut the 12"x12" x1/4" piece into an 11" diameter circle and glassed it in. I cut the material with a jig saw and finished the edges with a belt sander. It is hard and I did go through about 6 blades cutting out my piece. Expensive but worked great for my needs.

Bottom Line Yes, I would recommend to a friend

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May 25, 2020

Yes
By Big Al from Chicago

I received my 12"x12" x1/4" piece and had to cut an 11" diameter circle out of it. I used a jigsaw. Burned up 12 Bosch jigsaw blades but it cut nice. Use a belt sander to finish it off. Very tough stuff. I'm using it to replace the bottom of my wet exhaust muffler. Nor I just have to glass it in.

Bottom Line Yes, I would recommend to a friend

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March 6, 2019

G10
By Dave from Ct

Verified Purchase

Great for custom helms

Bottom Line Yes, I would recommend to a friend

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January 9, 2019

Quick delivery, product as advertised
By Phil from FL

Verified Purchase

Reasonable price, fast delivery.

Bottom Line Yes, I would recommend to a friend

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December 19, 2018

perfect piece to have
By Captain Ron from PA

Verified Purchase

Needed to make a frame for bilge vents. Replacement vents are a different width. The frame will be a type of "picture frame" I will fit into place around the existing cut out in the hull. I will recess the frame into the hull and epoxy into place.

Bottom Line Yes, I would recommend to a friend

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