On 31/07/2020 14:22:14, Dave Plowman (News) wrote:
In article ,
wrote:
On Thursday, 30 July 2020 21:58:01 UTC+1, Vir Campestris wrote:
On 26/07/2020 18:20, Dave Plowman (News) wrote:

Big snag is actually knowing how long these 'new' methods do last.
Plenty claims, though. The decking is marine ply, so hoping it will
still be just fine. The chippie who did the work was very good
indeed.

Marine ply won't disintegrate if it gets wet - it'll just dry again.

Unless it keeps getting wet, when it will rot just like any other wood.

Andy

Marine ply is one of those things much talked about but never seen in
diy or pro house maintenance. If someone says marine ply, it's something
else.


Most timber yards round here sell it. Or rather what they call marine ply.
At about 5 times the price of general purpose stuff.

If you want to go to the extreme make sure the marine ply it is of the
WBF type. A further extreme is to get Buffalo board. I've used it on a
shed roof without felt. My experience is it lasts 25 years in the open
air environment and is still serviceable and waterproof.