The Brew Cabin

Posted: **Thu Jun 21, 2012 3:41 pm**

Hello All,

Completely new to this site/forum, indeed any forum and have trawled through it quite a lot but not found the answer i need!

Help, advice would be greatly appreciated

I am needing to lay blue slate to the entranceway of a customers home and have planned and indeed priced to lay directly on top of the original red and black quarry tiles. Can i do this? I was planning to use soft sand with added sharp and cement to a ratio of 3:1:1 mixed to a firm-ish consistency. Will the bond be good enough or would i need (as i read just last night) a bond bridger of some type - this is unknown to me as yet!

Also i am taking out the original pointing on the slate path that leads to their front door/entranceway and wanted to know what would be the best type of pointing to use. The pathway is also blue slate.

I have used quite a few pointing systems over the years - regular mortar wet and piped in using a pointing gun - dry mix brushed in - Nexus resin pointing system and so forth..

All help would be warmly recieved as i am hoping to start yesterday...

Many thank you's in advance

Posted: **Thu Jun 21, 2012 6:20 pm**

will the new paving encroach on the 150mm below dpc rule?

overlays faq
slate is easy to stain
either be very careful with easipoint or use some epoxy mortar (Â£Â£Â£)
LLL

Posted: **Thu Jun 21, 2012 7:56 pm**

Hi LLL,

Cheers for the reply.

The slates are to be laid in a doorway (enclosed 3 sides) and all is above the DPC - step up from main path. I have read the 'overlays' part you linked in (missed that part) and i reckon i am good to overlay as the existing tiles are 100 square and the slates are 600x295 & 295x295.

Original tiles are solid and not depressed or cracked/loose and no weed growth.

With laying, will 3:1:1 soft,sharp,cement do it? also will there be adhesion issues - would i need a bond bridger

Gonna check out easipoint tonight..

Many thanks

Posted: **Thu Jun 21, 2012 9:49 pm**

I would use 3:1 sharp sand to cement with 50ml of sbr in every mix
the sbr really does stick like s**t to a blanket
using this mix to the consistency of bricklaying mortar IME eliminates the need for a bond bridge
LLL

Posted: **Thu Jun 21, 2012 10:00 pm**

thats great cheers. sorry to come across as a complete idiot but what do you mean by mortar ime?

Posted: **Thu Jun 21, 2012 10:13 pm**

In my experience
I recâ€¦.

Posted: **Mon Jul 09, 2012 2:07 pm**

When it comes to use of SBR in bedding mortars and bonding primers our advice - and we've been selling Ronafix sinnce 1969 so have a few m3 of experience - is a 1:1 dilution of Ronafix:water added to cement and sand. Add enough to achieve suitable workable mortar. This can equate to 90 litres of Ronafix per m3 of mortar.

Results is waterproof, frost proof and no cracks.

For a bonding primer mix 1:1 Ronafix:cement and brush this to the surface/surfaces to be bonded. Coverage 3-4m2 per litre of Ronafix.

See Ronafix for Bedding.

Hope this helps.

The Brew Cabin

Blue slate paving - Laying slate over victorian quarry tiles