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- Hey everybody, welcome back to the channel.
And if this is your first time here, welcome.
Every week we put up all sorts of videos
teaching you everything you need to know
about making repairs around your house, remodeling.
The toughest engineering problems you'll
ever come up with when you're working on your house.
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So let's get right on to it.
So, here you can see we're sort of in the process
of putting up our Schluter KERDI BOARDS here
that we're gonna be using as our waterproof substrate
because see these boards here are very lightweight,
they're easy to use and there's a fleece,
a waterproof fleece that's already attached to it here.
So these are the boards we're gonna be using
and then we seal up all those seams with the KERDI Band.
Now the thing is, Schluter specifies an unmodified
thin-set to be used on this product.
Why does it have to be unmodified?
And that has to do with the way that the thin-set cures.
So if I was to use this bag right here
of this modified thin-set even though
that's a really good product, it would void
my warranty with Schluter, if I used it here on here.
Because it has a polymer modified thin-set.
And so what happens is this, this type of thin-set here,
needs what we call an evaporative type of curing.
And a full cure on it would theoretically
take about 28 days.
Because you're putting this thin-set up against
a waterproofed
type backing here, there's nowhere for it to go,
nowhere for the thing to evaporate.
And you're putting an impervious tile up against it.
So you're trapping the thin-set in there.
How's it gonna dry and cure if it's polymer?
You'd have to let this thing sit here for a month
before you could grout the tile.
Well nobody's going to do that.
So if you were to just blindly grab this bag off the shelf
and put your tiles on to this wall, it's gonna fail
at some time in the future.
And that's where a lot of tilers make a mistake
because they don't understand the basic difference
between unmodified thin-set and a modified thin-set.
Now the unmodified thin-set does better
in a situation like this, where you have
the impervious waterproofing membrane
with the impervious tile up against it.
It will cure better with moisture in the thin-set.
So you know, many times of the years
if you watch any of those shows like Mike Holmes,
or what's the other one I think of?
Fix my, Rescue My Renovation.
A lot of times those guys will be called in
and you'll see that the person
had the best intentions and they used like Schluter DITRA
on the floor, but they laid it over plywood
and they used a modified thin-set.
And six months later the thing's still not cured
because the moisture's trapped in there
and the whole tile, the entire installation failed on them.
So you could use the best of products here.
But if you use the wrong thin-set,
even though that's a high quality thin-set,
you avoid your warranty.
So I hope this explains it perfectly for you,
why we use an unmodified thin-set on here.
Okay.
The problem is if you go to the store to buy thin-set,
unmodified thin-set, you're going to be looking
at bags that are $5 a bag up to $15 a bag.
Don't buy the cheapy $5 ones.
Get the ones that are closer to 15.
They're usually much higher quality.
Now let me throw a monkey wrench
into the works here for you.
Because what we're going to use here on this product,
on this tile installation is a new product
that Schluter came out with here.
And it's a thin-set here.
And the one that I'm going to use here,
it's called Schluter ALL-set.
But you might notice something funny about this.
You go, look at this, hey.
This says specialized, modified mortar.
Wait a minute, this is a modified thin-set.
It says it right there right?
Modified thin-set.
So now you're probably really confused
and you're going, wait a minute Jeff,
you just went on this whole soliloquy
telling us not to use a modified thin-set.
Why are you now using this Schluter modified thin-set
on your tile installation there?
Well the reason we can get away with it is,
Schluter has entire control over the entire process.
They know which modifiers they can put into this formula
that will work specifically for their product.
It's a engineered thin-set that works directly
with their product.
And it works on DITRA, it works on the KERDI panel.
So because they control it, they can do this.
And it says right on there, it says engineered
for use both over and under DITRA and KERDI products.
And it also says on this see, sag resistant,
suitable for large and heavy tile applications.
So this sounds to me like it's you know,
the best of both worlds.
So here we go.
I'm gonna show this other bag a bit.
If you look here, it says here,
that this meets or exceeds the ANSI A118.4, .11, and .15
So this makes this a really super high-end premium
type of mortar because it handles.
This 118.15 standard is an improved
polymer modified thin-set standard here.
And you notice how it has the T?
That's your confirmation that this will work,
it's a no sag that it's made for large format tiles.
So this to me is the best of the best.
This is probably going to be the best bag
of mortar we've ever used in tile.
So we'll find out.
And this is fairly new, it just came out this year.
And we have a pretty good confidence
that we're going to get a great installation from this.
So I would imagine you could use this
on just about anything.
Any kind of tile installation that you wanna do.
And the other thing you always wanna do,
to avoid screwing things up,
you could buy the best mortar and everything
and still screw it up by not mixing it properly.
And I just wanna show you,
most manufacturers show you very clearly
what they want you to do.
And this is pretty similar amongst most of them.
They usually want you to use 5.5 to six quarts of water.
You dump it in the bucket first.
You never put the powder in first, otherwise
you're gonna get clumps, if you put the water
on top of the powder.
Water always goes in first, powder gets added.
You stir it up.
And this is the part you always wanna pay attention to.
See how it says right there, 300 rpms?
They don't want you to whip it up at high speed
'cause it's like whippin' up egg whites you know.
And you get all the air and fluffiness in there.
Then when you set your tile in it, the tile sinks.
So you don't wanna do that.
And then you have to let it slake for 10 minutes.
And then after 10 minutes is done,
that's when all the chemical reactions are completing.
And then after that, you stir it for another three minutes
and then you're ready to go.
But most of your manufacturers have these instructions
on the back and you have to very, very carefully
make sure you're adhering to all of those instructions okay?
And then I just wanted to quickly show you
the grout that we're gonna use.
I always like to use a sanded grout whenever possible.
So anytime I have a grout line that's
an eighth of an inch or more,
you can use sanded grout.
Now some people are erroneously under the impression,
oh if I have an eighth inch I can't use a sanded grout.
You can.
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All right that's it for this week
and we'll see you next week.