Hi there,

  

  My father just purchased a houseboat, and we are changing out much of the structure.  Previously there was waterproof paint and plywood for the walls. The plywood is mounted onto a steel frame, and quite a bit has rotted out.  We are in the middle of changing out the rotten plywood, along with any rotten wooden framing in the walls.  Roof is plywood as well, floor is fiberglass.  

   

  Here is my question:  What is the most cost-efficient way to waterproof the exterior walls (plywood)?  

 

  A friend who's living is made installing Duradek has taken a look and approximated he can do it for around $3/sq. ft, labour incl.

 

  Anyone have a good method for a comparable price?

Back in my working days I put quite alot of waterproffing pruducts on houseboats and I've heard of this product, good stuff. IMO you have a good friend! At that price I'd make sure he applies plenty on the walls and roof. You can also use it for water proffing the outside walls of a basement.

The products I used came with manf. sugesstionss and instructions. Follow them to the letter!

Good luck!

Hello and Welcome to Bass Resource ~

 

Duradek sounds like it could be your answer.

 

Good Luck with the re-build

 

A-Jay

I've useGaco-flex and had great results on both deck & roof. Never used it on the side panels