Hanson sp101 ply

[James94]

Hi it’s been a while since my last post, so a happy new year to you all and I hope your all well.

I’m going to put some flooring down in my dads bathroom ,first of all was going to use some form of click lvt nd seem to of swung towards glue down lvt some form of tile shape. So my first question is does anyone know or have bought recently some Hanson sp101, only seen some online and seems quite expensive .

regards James 

[James94]

Anyone got any advice?

I've read a few posts and seems that people have ply,d but just used normal,can anyone advise on what to buy?

Regards james

[Nickfromwales]

2 hours ago, James94 said:

Anyone got any advice?

I've read a few posts and seems that people have ply,d but just used normal,can anyone advise on what to buy?

Regards james

Hi. For LVT you usually have an 18mm or 22mm P5 deck board, and then glue and screw down some ply over this to act as a binder, but also as particle board doesn't like feathering compound as much as plywood does.

 

The screwheads all need filler-ing and sanding back, so the plywood surface is relatively flawless. Then goes down the LVT.

 

I've never seen any particular plywood needed for this, it's just a floor. If you want to seal it, then tank the plywood layer and drop a few mm of feathering compound over that.

[James94]

Hi thanks for your help.

I went to a local shop and she told me I’d have to use sp101 ply, but if you say just normal ply will do I’ll get a good quality ply from local builders merchants, makes it simple.

The flooring at the moment is just 22mm chipboard. I have got to make up about 17mm which will be level with shower tray, it can be a little lower.

im thinking 12mm ply and 3mm tile glue so shouldn’t to to far off.

can you recommend a screw type that would be best as I don’t have a nailer?

also you say about the feathering, does it matter if I put it everywhere and sand it or just the joints and screw? Then sand.

Regards. James

 

[Nickfromwales]

12 hours ago, James94 said:

Hi thanks for your help.

I went to a local shop and she told me I’d have to use sp101 ply, but if you say just normal ply will do I’ll get a good quality ply from local builders merchants, makes it simple.

The flooring at the moment is just 22mm chipboard. I have got to make up about 17mm which will be level with shower tray, it can be a little lower.

im thinking 12mm ply and 3mm tile glue so shouldn’t to to far off.

can you recommend a screw type that would be best as I don’t have a nailer?

also you say about the feathering, does it matter if I put it everywhere and sand it or just the joints and screw? Then sand.

Regards. James

 

Not sure what shop it was….but I’ve been fitting high end bathrooms and kitchens for decades, and I’ve never used anything other than regular plywood off the shelf, or the very worst case of the client poops the bed I fit ‘marine’ ply, but as it’s all covered by tile adhesive and tiles, or glue and LVT, there’s just no way the ply can fail (if the jobs been done properly).

 

Just regular BZP countersunk posi head screws, cheap and cheerful, which I buy to be 5mm shorter than the sum of the 22mm deck and the plywood of choice.

 

FYI, it’s not a great idea to finish the floor level with the tray. Sounds great on paper, but is wholly impractical in real

life. I’d say you’d want 10mm of upstand showing, so you can fit the flooring against a vertical surface with some real estate to seal the two together with clear CT1.

 

If you’re good laying the plywood, eg screwing with higher frequency at the edges and seams, then that will reduce or remove the need to feather. You can just get away with spot-filling the screw heads one by one, and sanding those and the seams to get it smooth and regular.

 

Sealing with Ultra flexible-prime watered down 25% would then give you a very good platform to start laying the glue and flooring. Bare, dry, non-sized plywood isn’t the best thing to try and lay the flooring onto btw. 
 

One I did previously for eg. 

 

[James94]

Hi Nick,

It was a local carpet and lvt shop, i'll just get some ply from local builders merchant then, was looking at 12mm which would leave me a little from tray top, i might look at the 9mm just to make sure i have a step to seal to.

thanks for the screw advice, only got three sheet of ply side by side so not going to have many seems to deal with but will feather and sand them as well as screw heads.

could you give me a bit of advise on priming and which one to choose also when choosing the glue is this determined by what primer you have used and what lvt I'm going to lay?

by the way pics look good 👍

Regards  James

[Nickfromwales]

The ones in my pic were self adhesive, so I had to get the prep spot on. All a bit dark for me but the client was ex UAE, so that was his chosen colour theme. Mosaic tiles were a right bastard to do, tiny glass ones which I had to mitre….. joy. Slowly leaving that life behind. 
 

The LVT shop should be plenty well equipped to tell you which glue to

use, and how thick to apply it. Usually they sell you a 3mm notched trowel to spread it around consistently.

 

Much better to reduce the ply and have the lip. You’ll thank me later, even though the thought of not deleting the lip seems a good one right now. .

 

I use ultra stuff, so this primer watered down 75% primer / 25% water, and just have a wet sponge full of it to work into the surface of the plywood. It needs to be completely dry before using LVT glue on top, so give it 24hrs after saturating the plywood with it. 
 

Link

 

Keep driving the screws into the ply until they’re about 2mm below the surface of the plywood. 
 

So for 9mm ply into 22mm P5, you’d want 4.0 x 30mm screws.