58802Re: PT decking?
- Oct 1, 2008Let me try to get this across again. In just the last few years they
changed the chemistry by federal law for PT lumber. Old and new
chemistry reacted with glue bonding of any type and the new with most
fasteners. Both chemistrys cycle salts to the surface with moisture
MDO is great for boat building if it is a good grade of MDO good thing
to check on. Exterior ply has notmaly thicker iner plys and thinner
surface plyes. Marine has typicaly even thickness plys no voids on iner
plys more plys for thickness and more of the same glue. MDO of a good
grade will have even thickness iner plys a thin outer ply and the
overlay good cores and even more of the same glue as marine. HDO is
like MDO but the overlay is harder smoth and bonds poorly.
- << Previous post in topic Next post in topic >>