Can anyone tell me what this is?

[pablo79]

Hi all,

I'll soon be starting a floor tiling job at my house. However, I'm unsure what this substrate is? I need to know so I can choose the right adhesive.

I peeled back the carpet and there are no joins in the substrate. Is it a levelling compound?

It's rock solid and feels like concrete. If you dig at it with a sharp object, like a screwdriver, you can dig a grove into a it, but it's not easy. It's rock hard. It has a browny colour, and is very slightly dusty.

What is it? What adhesive would I use? And should I seal it (with pva, for example) before tiling?

Many thanks.

 

[pablo79]

I should also add there appears to be fibres in the substrate.

 

[Protilers]

looks like fibre reinforced concrete to me.......just not laid very well!........if its solid........SLC it! and go, go, go!

dont use PVA.......find a propper tiling primer like weber pr360 or equivelent!

all the best

Lee

 

[David - Tradetiler]

or a fibre reinforced sand and cement screed, (looks to have been laid on the dry side) as long as it's not crumbling then should be OK to use.

 

[Protilers]

or a fibre reinforced sand and cement screed, (looks to have been laid on the dry side) as long as it's not crumbling then should be ok to use.

yep!......

 

[pablo79]

Many thanks for the info.

What adhesive would I need to use for this? So no sealing required?

 

[pablo79]

Also, part of the area I'm tiling has already been tiled - they've been down for 13 years and they're as solid as a rock with no cracking. Looking at the level, I'd say no SLC has been used.

Just advice on adhesive would be great. Many thanks!

 

[steve187]

what tiles are you using

 

[Sean SML Tiling]

Prime with pr360 then use a cement based adhesive. Use single part flexible if using porcelain. If using slc prime before and after laid

 

[Rookery]

Weber Rapid Eco - good adhesive and a great price too.

 

[Mark S]

Very much looks like a fibre re-inforced sand cement screed with a naff surface finish.
Prime and slc as with previous posts, stick with same manufacturer for primer slc and adhesive would also be my advice.