Making plywood water resistant

by Hamza


I am in Peshawar, Pakistan- I am building a boat out of plywood- we do not have marine grade plywood, can it be made water resistant by coating it with fiber-glass or do we have any other methods too.

Looking forward to your earliest possible reply


Comments for Making plywood water resistant

Click here to add your own comments

Construction Ply
by: Bob

Hi Hamza,
I believe construction grade ply uses a waterproof glue though the timber is of course much inferior to marine grade ply and would ned to be treated with epoxy/fibreglass also.

Will keep you updated
by: Anonymous

Thanks Mike for all your help, will keep you posted on the development- Its the only activity that keeps us occupied positively amongst all the bomb blasts and collateral damages.

I hope conditions will get normal by the time we finish our projects.


A hovercraft!!!
by: Mike

Hi Hamza,

A hovercraft, wow and a canoe you are going to be busy.

Pay particular attention to sealing the edges of the plywood once it is cut to size.

And I hope you will keep us updated on your progress.

Happy boat building,


Thanks Mike
by: Anonymous

Dear Mike,

Thanks a lot, I am planing to build a hovercraft and a canoe, both are them require marine grade plywood which is not available in my country- importing it out of question so have to rely on what is available which is non waterproof commercial plywood.



Boat building plywood
by: Mike

Hello Hamza,

Yes, lower grades of Plywood can be sealed with epoxy resin.

In fact when using plywood and epoxy was first introduced, it was suggested that even the lowest grades of ply could successfully be used.

The problem with using lower grades is that if the epoxy or epoxy and fibreglass, coating is damaged and water is allowed to get in, then the lower grade plywood will deteriorate more quickly.

Another problem is that the epoxy/fibreglass coating will be less flexible than the plywood.

This means that if the plywood on your boat is prone to flexing then you could find that the fibreglass coating will begin to delaminate from the wood.

So, if you have to use a lower grade, you will have to be careful to avoid damage to the surface.

And if it does become damaged, dry it out and touch it up or patch it straight away before water is allowed to penetrate beyond the surface ply.

All I can say is to use the best quality you can.

What type of boat were you planning to build?

A small boat which isn’t kept in the water will clearly be easier to maintain than a larger one.

Click here to add your own comments

Return to Your Comments.

Want to add more photos?

If you are having problems uploading Photos or would like to add more click on this link for the Upload Form.

You can upload as many as you like and there is no need to resize them.

You might like these

  • Boats and Bits, Free Advertising.

    The Boats and Bits Exchange is a FREE advertising space for anyone wishing to sell, buy or exchange Wooden Boats, Boat Bits or other items of Chandlery.

  • Project Boats by Proud Wooden Boat Lovers.

    A showcase for Wooden Project Boats that enthusiasts are working on building and restoring.

  • Readers Tips for Your Wood Boat.

    Readers Tips advice on how to maintain and improve your Wooden Boat and save time and money

  • Wooden Boat Women

    Wooden Boat Women, come on girls, you can do it just as well as the guys, show off your skills, your boats and encourage other environmentally friendly female boat builders.

Recent Articles

  1. Scorpio

    Sep 21, 19 12:01 PM

    Holman & Pie Northwind 1964 Strip planked hull on oak beams with mahogany superstructure & laid decking She's currently located in Ibiza in San Antonio.


    Sep 17, 19 03:32 AM

    Reedville hosts the best little boat show in September. Photos by Eric Eichenmuller

    Reedville hosts the best little boat show in September.

    Read more by Ann Eichenmuller at Chesapeake Bay Magazine

    Read More

  3. We absolutely need this brand-new 1930s wooden speedboat from Fitzke Boatworks

    Sep 17, 19 03:32 AM

    This mahogany and oak wonder looks like it came straight out of the 1930s, but it was built in 2019. Fitzke Boatworks

    The boat is called Bugbite, is based on plans from a 1930s boating magazine and is staggeringly pretty.

    Read more by Kyle Hyatt at

    Read More