Faugh

Two heavy coats after the 50/50 coats  on bare wood will last 2 years depending on abuse it get's , just wipe it with white sprit and and brush more on or use a rag it spreads well , No sanding unless heavy damage

Two heavy coats after the 50/50 coats  on bare wood will last 2 years depending on abuse it get's , just wipe it with white sprit and and brush more on or use a rag it spreads well , No sanding unless heavy damage

No pic's but just like the above pic , It must be good tung oil and not re-constuded boiled down linseed oil , Good tung oil will will be noted on the can as Pure . first two coats 50/50 with white sprit

This is presumably so that it soaks in well and gives a good base layer for the top coat, just like a 50/50 emulsion mix on fresh plaster! 

I use tung oil on my boat
 

I use tung oil on my boat
 

I used whatever teak oil the building supply shop sold. A fraction of the cost of what the boat maker specifies and seems fine.

I cut the floor back to access the whole transom. The transom below the deck level was bare ply so no great surprise it rotted

Deck at the back was solid fibreglass :

 
I cut the deck back and stripped the fibreglass from the inside, the transom looks to have had another layer of ply above the deck. I stripped the ply off to the fibreglass

 
Then last night I ground all the old crap off to a nice clean surface to start the rebuild with

 
So. Much. Dust
 
I filled a carrier bag with just dust that had collected in the bilge.
Got a sheet of marine ply on order, 10kg fibreglass kit and resin thickener powder stuff. Just need a bit of time with no rain to do it