I have a leaking 2nd Floor porch. It is also the roof/ceiling for a down
stairs room

Whats the best way to redo this. I would like floor tiles as the floor /
roof

I know I have my floor joists first, then plywood decking. What are the next
layer(s)

Thanks in advance. I've searched all over the internet with no luck

Thanks, Pat

"Patrick Baize" wrote in message
...
I have a leaking 2nd Floor porch. It is also the roof/ceiling for a down
stairs room

Whats the best way to redo this. I would like floor tiles as the floor /
roof

I know I have my floor joists first, then plywood decking. What are the
next
layer(s)

Thanks in advance. I've searched all over the internet with no luck

Thanks, Pat



I have never done it. I have seen it done 5 ways.

Joists, plywood, EPDM, hardi-backer (or wonder board) and tile.
Joists, plywood, copper , hardi-backer (or wonder board) and tile.
Joists, plywood, hardi-backer (or wonder board) and tile.
The first two above using a mortar based pour over the substrate in lieu of
the backer board.

If it were mine I would use the first method because the only entry point
for moisture is the nail/screw holes. The copper welds can separate. The
pour is a bitch to manage. Hardiebacker or wonder board needs a moisture
block.

Colbyt

A Rubber torch down sounds best, with floating floor above.

I've been researching this myself, and haven't found a good solution yet.
One common concept I'm hearing, though,
is that trapped moisture will cause fairly short lifespan in any underlying
sealing material. For that reason I think that the exterior (walkable)
surface should not trap water under it where it will not be able to dry out.
I've found a few possibilities, but I'm not sure if they are tough enough to
withstand furniture, along with not causing dirt to be tracked in to the
adjacent living quarters.
If you can start with clean plywood, this might work
http://www.sanitred.com/Roofing.htm?trackcode=bizcom

bill

"Patrick Baize" wrote in message
...
I have a leaking 2nd Floor porch. It is also the roof/ceiling for a down
stairs room

Whats the best way to redo this. I would like floor tiles as the floor /
roof

I know I have my floor joists first, then plywood decking. What are the
next
layer(s)

Thanks in advance. I've searched all over the internet with no luck

Thanks, Pat