I'm going to demonstrate how to put down underlay before you actually lay your tiles.
We are on a timber floor so it is advisable to use an underlay.
So the tool that we need to do the job, the level.
We have a fiber cement shape cutter.
Most importantly, you'll need a dust mask because we are actually using fiber cement.
A knife and gloves . . . obviously safety is important.
We have our pencil and our tape measure, clouts, hammer.
We have our sealant and our caulking gun.
And of course, most importantly, we're laying underlay so we will need the actual underlay.
So first, we need to actually measure out the space so we know exactly how big we need
to cut our underlay sheets.
So I'll move all my gear out of the way and we can measure up the space.
So now, we're going to measure up for our first sheet that we're going to cut.
So we'll start off measuring from the wall to this first piece here.
That's 1260.
I'll write that down so I don't forget.
Okay, we also need to measure the doorway because we have to allow halfway under the
door for the underlay to end, so I'll measure that as well.
Again, writing down my measurements so I know what I've done.
And taking into consideration that our underlay sheets are 1200 wide, that's how wide I'm
going to take the measurement for the first sheet, so just from the edge of the doorway
and 1200.
So now, I'll transfer my measurements on to my first sheet and I'll cut them from there.
And now, I'm just going to grab my straight line to make sure that we're level.
I am going to need the assistance of someone else because the sheets are a little bit heavy.
Okay, so now we're going to need our fiber cement cutters and we'll cut straight across
the line that we've drawn.
Okay, now we've got our tile underlay down, we need to cut out the opening for the doorway.
So first, I'm going to actually mark three mil away from the edge here, and I'm going
to put an arrow facing the way that I actually need to cut the tile underlay.
Next, we're going to need to measure the distance, just this little doorway opening that we have
to cut for.
Okay, now we're just going to pick the shape back up again, and we'll cut out our section
ready for the doorway.
Okay, so we're going to measure where I marked it and 40 millimetres out.
Now, I'll just get my straight line and draw a nice straight line there.
Okay, now we're ready to cut, so I'll just get Jason back over just to help hold the
sheet for me while I actually cut it.
Now, our sheet's been cut.
We're ready to lay it back down again.
Okay, now I'm ready to cut out my cement sheet for where my shower base is using the same
process as we do for the first piece of underlay.
You can use a whole piece of underlay if you wish.
However, I've got enough cut, so I'm going to actually draw it in two.
Okay, now I've finished cutting around the pieces for the shower, so I'm going to help
put them down, remembering we've cut enough to leave a three mil gap so that we can put
our silicone in.
Okay, so now I've got my nails and my hammer, and we're going to start putting the nails
in.
If you do notice as we start nailing, you'll see there's places marked on the actual underlay
for the nails to go into.
Okay, we finished nailing down our underlay.
Now we're ready to actually silicone in between the joints and around the corners.
So we're going to use our wet and dry silicone, obviously, because it's to make sure that
we keep the moisture out.
We'll need our nozzle, our caulking gun, and of course, we need a knife to cut off the
cap and the nozzle.
Okay, now we're ready to caulk — just removed my gloves because I won't be needing those
— and we'll start with this edge.
Okay, that's the job done now.
We've put down our underlay.
We've nailed it and made sure the nails are nice and flush.
We've put in our silicone into all the joints so we're now ready for waterproofing.