filling concrete channel?

[27neth]

Hi,
I could do with some advice.. I have just had some aluminium doors fitted. As the finished level of the doors is flush with the inside flooring i needed to take a corse of bricks of from the outside wall. This has left me with a channel between the aluminium doors and the concrete slab of 65mm deep X 25mm wide around 4m long.
What is the best thing to fill it with?
Thanks for any advice.

John...

 

[ree]

This question has been covered many times before - why not research in this forum and the flooring forum. Also google pics of cavity closers and installation of sliding frames.

If you post pics of your situation it would help.

 

[27neth]

A cavity closer won't work..

John

 

[ree]

I'm not saying that a cavity closer would work for you - i'm suggesting to google the kind of pics that will show you how others have approached this kind of thing.

I cant make out whats what from the pic.

 

[27neth]

What I have done is remove one course of bricks from the outer skin so the doors would be level with the inside floor. There was a strip of 25mm polystyrene all the way around the perimeter of the concrete slab, which I removed in front of the doorway ( needs self levelling) so I now have the cavity where the poly was behind the doors.so I now have a 65mm deep x25mm wide cavity behind the door.
Cheers John

 

[ree]

Are you saying that the slab is suspended on a block wall?

The polystyrene would have been a perimeter insulation strip. Same kind of insulation as laid under the slab.

Where is the membrane (DPM)?

From your sketch the bottom rail of the slider is going to be (or is) lower than the inside FFL? Have the doors been installed too low?

In answer to your original question: why didn't you simply cut the polystyrene to the desired level instead of removing it?

What material is your finished floor going to be - can you indicate the FFL on your sketch?

 

[27neth]

Thanks for the reply,
The slab is a standard build hardcore, insulation etc, it's just my dodgy drawing.
There was a 25mm strip all around the perimeter, I cut it down along the door edge as it was level with the finished floor and it is getting Amtico flooring fitted.
The membrane level is under the door cill.
The bottom rail of the slider is about 10mm above the finished floor level, enough for a screed and the Amtico.
I removed the polystyrene as I would not of been able to get the Amtico to fit on it, I'm guessing a few mm of screed on top of polystyrene would of broke away
Cheers john..

 

[27neth]

 

[27neth]

That is a piece of 15mm aluminium bedded on the brickwork to bring the height up so the doors finished flush with the inside floor level