Please help a Newbie

[LesD]

One more question if I may, is the 18 mm WBP Plywood you recommend only OK to overboard existing floorboards with or is it OK to use directly onto the joists with the old floorboards removed?

 

[faithhealer]

One more question if I may, is the 18 mm WBP Plywood you recommend only OK to overboard existing floorboards with or is it OK to use directly onto the joists with the old floorboards removed?

If it's the height issue, take the boards up and put some 'noggins' in (Strengthners inbetween the joists) so that the ply has max support. It's unlikely that the joists will fall exactly where you want tham!

 

[LesD]

put some 'noggins' in (Strengthners inbetween the joists) so that the ply has max support. It's unlikely that the joists will fall exactly where you want tham!

You are right about the joist positions but I reckon I can sort that out by following your advice.

With the 18 mm WBP plywood (I am gettings an 8'x4' sheet from Wickes tomorrow) I have read elsewhere not to seal the surface that the Keraquick and Latex plus goes on to but what about the under side of the plywood sheet and its edges? Should I seal these parts and if so what with?

 

[LesD]

With the 18 mm WBP plywood (I am gettings an 8'x4' sheet from Wickes tomorrow)

I got my 18 mm wbp plywood OK yesterday and have it standing in my garage.

I have read elsewhere not to seal the surface that the Keraquick and Latex plus goes on to but what about the under side of the plywood sheet and its edges? Should I seal these parts and if so what with?

With no replies forthcoming from you guys my brother has suggested Yacht Varish so if I hear nothing to the contrary that's what I will use.

A good idea or not? :huh2:

 

[White Room]

Seal with sbr mate thats good stuff

 

[smurf21]

no need to seal the top if using a polymer enhaced adhesive just the edges and underside if you like... but if water gets out of the tray all the sealing in the world wont help if you want it truly waterproof under the tray use a tanking system onto boarding and up the walls where tiles removed before putting tray back down.

 

[faithhealer]

Hows the project coming Les

 

[LesD]

Hows the project coming Les

Hi thanks for asking. The job is underway but as usual with my rate of progess there is already slippage on the plan!

I have the old buttresses down that used to narrow the front for the old 760 mm door so the spaces are ready for new tiles and eventually the new 900 mm door.

I also have the old tray out and the state where it sat was worse than I remembered. I knew the floor would have to be replaced, which is why I got the 18 mm WBP plywood you recommended but there is work to do on the wall that I did not expect as you will see from the pictures I have uploaded.

The things I get myself into. :whistling:

 

[LesD]

no need to seal the top if using a polymer enhaced adhesive just the edges and underside if you like... but if water gets out of the tray all the sealing in the world wont help if you want it truly waterproof under the tray use a tanking system onto boarding and up the walls where tiles removed before putting tray back down.

Hi Smurf,

Not wanting to start from scratch I have been trying to avoid tanking but maybe I should reconsider it.

The new 900 mm square stone resin tray I have bought will be such a snug fit in the in the space between the walls I was hoping to bed it down in Keraquick with Latex Plus and then fill all round its three sides and up under the tiles that are required to make up the space to the existing ones all with the Keraquick adhesive.

That's from a amateur's perspective of Course.

 

[faithhealer]

Seen worse floors/walls les, it'll be alright on the night mate