is there such a thing as mechanical fastenings for large/heavy stone tiles

[Julian 'Farmer' Bonsall]

' construction of stoves, pizza ovens, tiled stoves and joining outdoor constructions, such as grills and fireplaces. It has a longer setting time which is easy to use and gives time to match elements.' Is this really suitable to cope with >50kg/m2?

Lee Mac suggested 'ISOMAT AK-FIRE - Adhesives for Special Applications, Tile Adhesives & Grouts - ISOMAT - https://www.isomat.eu/product/isomat-ak-fire-2-en/' - maybe speak to them. Also this thread

'High Temperature Tile Adhesive - https://www.tilersforums.com/threads/high-temperature-tile-adhesive.76657/'.

 

[Stuart L]

Julian
the isomat link says its a refractory mortar for fire bricks, would this be suitable for tiles?
Being a DIY'er i'm not sure if this is suitable for tiles. I will give em a call tomorrow and let you know what they say.
Just looking at purchasing one of those Raimondi tools best price i've found so far is £85 without grinder.

 

[Julian 'Farmer' Bonsall]

Stuart - Im just suggesting you give them a call as they have a large range of solutions and have been helpful to me (recently, and technically). I don't know how hot your wall is getting and how that will determine the solution but clearly you have a bonding issue. The adhesive you have used I see sold in maybe Toolstation and I couldnt find out very much data which I would normally find for adhesive products (I read because I am a DIY'er also and rely on these fair gents and ladies).
What is the fireboard (I think you said you didn't know).
How hot does it get and thus what does a supplier have for >50kg/m2 stone tiles and there instal guide. The use of PVA if one was bedding them like a brick slither on a fireplace or fireoven sounds very different to your application.

 

[Stuart L]

Hi guys
just a follow up on yesterdays conversation, i've been in touch with isomat and the news is not very good. Bellow is their response

"Dear Sir good morning.

I hope you are fine today.

Initially, I would like to thank you for considering ISOMAT products for your project.


Unfortunately, I have to inform you that we do not have an appropriate product in our range for that kind of application. AK-FIRE is not suitable for tiling.

Have a nice day!

Best regards
Cordialement

For ISOMAT S.A.

Georgios Syriopoulos
Civil Engineer MSc
Technical Support Department"

 

[Blunt Tool]

I’ve done them over the years and never had any problems. I’ve used a bagged S1 adhesive like Weber low dust spf and added in some Weber ad250 additive and grouted with a flexible powder grout. Primed walls first with acrylic primer diluted then neat and never used mechanical fixings unless over 3 metres. Notch the wall aswell as small notch the back of tiles.

 

[Julian 'Farmer' Bonsall]

Thanks for the feedback.

What did you tell them the temperature range is?

I have a wall the opposite side to an Aga and its chimney (paraffin burner) to do in the near future. The wall gets warm but I logged the temperature (you could use something like Mini Digital LCD Thermometer Temperature Hygrometer Probe Indoor Room Office CE | eBay - https://www.ebay.co.uk/itm/Mini-Digital-LCD-Thermometer-Temperature-Hygrometer-Probe-Indoor-Room-Office-CE/152628487236?epid=15005621374&hash=item23895de444:g:QZcAAOSw2kZZbbNA&autorefresh=true). The maximum I saw was around 64DegC.

Anyway my project is different but the attached document may be helpful. It states a temperature upper limit of 90Deg C like most of the Mapei products [Maybe most tile cements have this property I have investigated] The Keraflex Maxi S1 states the highest bond strength after heat ageing but not for natural (its what I think I will use). The Keraflex may work. Anyway I don't know how hot your boards get or if you need a material to insulate the tiles from the heat of the chimney.

I have attached an Ardex document which I found useful for my project.

[Diy'er ]

 

[WetSaw]

RAI-FIX - Raimondi s.p.a. professional tile tools - http://www.raimondispa.com/en/prodotti/rai-fix-gb/

 

[LM]

RAI-FIX - Raimondi s.p.a. professional tile tools - http://www.raimondispa.com/en/prodotti/rai-fix-gb/

It’s not like you Paul to be so slow😉

 

[Rosco100]

I’ve done them over the years and never had any problems. I’ve used a bagged S1 adhesive like Weber low dust spf and added in some Weber ad250 additive and grouted with a flexible powder grout. Primed walls first with acrylic primer diluted then neat and never used mechanical fixings unless over 3 metres. Notch the wall aswell as small notch the back of tiles.

Ditto

 

[WetSaw]

It’s not like you Paul to be so slow😉

I'm struggling to find any enthusiasm at the moment to be honest. I need a pint of "Pull yourself together"..