Used it to restore the seams in a traditional Great South Bay Gil Smith cat boat. It worked perfectly.

I used the cotton calking to fill gaps in between boards of a shed that I'm building with some friends

i'm using this on my red cedar hot tub and it worked like a charm!!!

There are good youtube videos on how to use the cotton, especially Louis Sauzedde's Tips From A Shipwright. The process is straightforward and there are different tools you can substitute like a rubber mallet, putty knife or pizza cutter. FMI: http://smallboatrestoration.blogspot.com/2016/01/barabshela-river-skiff-of-captain-john.html

I own www.prostaffbuilders.com and part of my work this year is to restore the Norden for www.angelsabroad.org this calking worked great. there are some good videos out there to help you along if its your first try. or you can reach us at the two links above. JD is great to work with and shipped promptly. Thanks guys

As a charity with little time to spare on our trip ""JD"" was on time in shipping and the products where as promised. Effective and easy to use!

Bristol cotton that's an essential component in traditional boat building done in my shop; whether your project is a simple restoration (if there is such a thing), or new construction Jamestown has the right stuff at an affordable cost