o.k. on the boat forum they keep saying thompson's water seal so i got a quart of it to seal the floor up,cleaned up the floor,removed the seat belt in the house and the went after the linoleum,it's hot out so it came up pretty easy,get to the steps and
it's wet,rotten and almost an inch out of square
so out comes the door,take out the side screws go up on the ladder and there are no top screws the door frame is about 1/4" higher then the the house,it.s not the original door
so i spend about an hour scraping silicon,then cut the bottom tab off the door so now there is no bottom screws but lowered the door enough for top screws
replaced the rotten step and about 10" up the sides
and of course painted it freakin white
being frugal left me with exactly enough,not an inch to spare butyl tape to do the job
the plastic trim disintegrated upon contact