outside balcony

[atec]

hi, got an outside balcony to do, havent done one before, the substrate is a velt type material. tiles are slate, was going to put these ontop of a coupling membrane. what adhesive would i use for out doors or should i just use mortor. if i use mortor do i need the coupling membrane. I also have not used mortar before. Their is no shelter from the elements.

[GazTech]

You can't tile onto felt full stop mate. The bitumen sticking the felt down is unstable during temperature fluctuations....Gaz

[TilingLogistics]

Hi

Gaz is totally correct you cannot tile directly on to felt or asphalt however you could tile onto a balcony such as this using the Schluter balcony system. A word of warning though it is Expensive

Kev

[deanotile]

Sub-floor preparation for ceramic floor tiling
Cyril Potter, Chief Chemist at Ardex UK looks in detail at sub-floor preparation for ceramic floor tiling.

FLOORING GRADE ASPHALT.These sub-floors can be difficult to assess for suitability as a base for ceramic floor tiles.Flooring grade asphalt will slowly deform under stress and is normally laid over a scrim or separating membrane so that it is not restrained.If there are signs of cracks in the asphalt then these are likely to cause problems.
Avoid the use of asphalt as a sub-floor for ceramic floor tiling where the tiling will be exposed to a large range of temperatures.If the asphalt is sound then the procedure will depend on the surface finish, prime smooth asphalt before fixing the tiles, direct fix on asphalt with a sanded finish providing the sand is clean and well adhered.
Cleaning the surface of the flooring grade asphalt with an alkaline cleaner and thoroughly rinsing off with clean water appears to be effective.There are risks associated with fixing tiles on external asphalt, as external asphalt is usually a roofing grade, designed to function as a waterproof membrane and remain deformable at high and low temperatures.Where it is trafficked it usually has an additional layer of paving grade on top, except for a 150mm perimeter of roofing grade asphalt, however fixing tiles to this type of sub-floor is still a risky operation.

[Dave]

Hi

Gaz is totally correct you cannot tile directly on to felt or asphalt however you could tile onto a balcony such as this using the Schluter balcony system. A word of warning though it is Expensive

Kev

Not on top of felt you can't...

[atec]

I have loads of schluter Balcony system, i was toying with the idea of putting this down first without fixing it to the surface and then tile on top relying on the wieght of the adhesive,slate and grout. on reading the replies i take it you can not cover asphalt. In other words no adhesive on the asphalt. I also apoligise its asphalt not felt.

[TilingLogistics]

Not on top of felt you can't...

The felt is a waterproofing system surely? So why not take it up and replace it with a tanking system and then tile? Provided the substrate conforms with BS. I had a leaking flat roof that was felt covered!!! I had a company in to protec it with sealed vacuum plastic never had a problem again! We are so backward in this country IMO felt, asphalt, flashing I think its time we moved forward. There are thousands of balconies in Germany and Spain they never have problems! Why do we?

Kev

[GazTech]

Balconies abroad are all cement...not bloody wood with crap felt stuck with tar.
When do we ever get the weather to enjoy a balcony anyway.....

[TilingLogistics]

Balconies abroad are all cement...not bloody wood with crap felt stuck with tar.

When do we ever get the weather to enjoy a balcony anyway.....

So what! our floors are crap but we tile them We are just getting into underfloor heating I had it 20 years ago in my house! I had a combi boiler in a German Flat 31 Years ago.
All I am saying is we can change as well. The technology is out there we just have to aquire the knowledge and use it.
So back to my question why can't we just rip up the Asphalt, felt or whatever it is? Sort the floor to meet BS Standard and tile it? After all if we found a bitumen ashesive on a floor in a kitchen we wanted to tile we would either self level it or remove it and tile wouldn't we?

Kev

[GazTech]

[b]

So what! our floors are crap but we tile them We are just getting into underfloor heating I had it 20 years ago in my house! I had a combi boiler in a German Flat 31 Years ago.
All I am saying is we can change as well. The technology is out there we just have to aquire the knowledge and use it.
So back to my question why can't we just rip up the Asphalt, felt or whatever it is? Sort the floor to meet BS Standard and tile it? After all if we found a bitumen ashesive on a floor in a kitchen we wanted to tile we would either self level it or remove it and tile wouldn't we?

Kev

I never said it couldn't be done Kev...

[wivers]

http://www.biscem.co.uk/downloads/Bi...oBalconies.pdf

This explains it a bit mate.

I have tiled balconies in the past with 2 part and without any comeback thus far, but hey i am the forum gimp

[365drills]

Slightly unrelated to tiling but still on the balcony topic is the use of stainless steel balustrades. If you ever need a good supplier for stainless steel posts, brackets etc either internal or external then Stick-it do a super range.

When I created my own balcony at home I looked at boatyards and steel works to prefabricate a banister but the cost of welding is huge on stainless. This is their website and if not helpful to this post then a useful resource for those of you who do installation work.



Stick-It UK website for stainless steel handrails, balcony etc

[LM Ceramics]

i have tiled 2 balconys to date on slate and other terracota the terracota was concrete and the slate was asphalt i used 2 part flexi aswell so far no comebacks on the slate job although i was advised by my local tile shop to use a porcelbond adhesive for outside balcony i dont know whether im correct or not

[atec]

how long ago was the slate job done, could it be to soon for comebacks. I still think if i use schluter membrane it would be ok, though jury still out on it, still looking into it.

[Dave]

Please contact schluter uk direct before you commence.....



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[atec]

I have emailed Schluter will keep you informed, cheers