Differing surface beneath patch

[vulcancontinental]

I have a doorway between hall and livingroom in an old lodge. The hallway is a thin layer of concrete, 10mm, not a screed, above a base of concrete I believe. Next to this at the threshold is a timber beam set down below the level of the concrete by a few mm.

Small sections of the top level of concrete and above the beam need to be filled, possible 300mm long x 125mm wide and levelled to the edge of floorboards in the living room.

A carpet will cover the filling whatever it may be and there will be a transition threshold strip from carpet to laminate on top of floorboard.

It is a heavy footfall area: I can fill with repair cement or one of the two stage epoxy fillers, have I missed an alternative product? I'd hate to walk through and feel things crumbling under the floor covering in a few months. I'm filling over concrete and wood hardened with a Ronseal product. Will try to post a pic if asked for.

 

[vinn]

Please post a close-up pic and a context pic.

The "10mm thin layer" you mention is most probably sand and cement not "concrete"..

 

[chappers]

what depth are we talking here? Sounds like a self levelling screed might be what you need.
Any chance of a photo?

 

[vulcancontinental]

I''ll post tomorrow, phone is playing hard to upload. Thanks for thaking an interest.

 

[vulcancontinental]

Here is a pic. The gap is between the wooden floor beam and oversite. The brass trim is there temporarily to protect the edge of the laminate.

 

[vinn]

OP,
Come back about 150mm from the brass strip and cut a neat line across the S&C or SLC (whatever the material is) the width of the hallway.
Clean up the cracked material and determine what is underneath - is it T&G boards or a solid floor?

 

[vulcancontinental]

It's concrete vinn. The laminate is laid on boards in what was a lodge, the left it's concrete, the top layer certainly not a screed, may have been a replacement for quarry tiles

 

[vinn]

Still come back beyond any cracking or loose material and prep with say Pva, and fill and level off with a tub of repair mortar from B&Q or similar.
Fill up to the brass strip before removing it to leave a 10mm expansion gap, and when set fix a transition bar wood to carpet at the join - you have enough meat to screw down into the joist(?).