IPE decks are sometimes built using plastic oval washers
Grooves are cut in the plank sides and attched to the framing underneath
with ss screws. So nothing is visible topsides. The planks have a small gap.
and the srews have small narrow heads.
Aso special brackets that attach on the side of the plank and then into the
framing. I think I have seen in the catalogs.

"Marc" wrote in message
...
I'm involved in a project to replace the teak aft deck on a trawler.
Is there a method of construction that DOES NOT require penetrating
the substrate with screws.