Packing steel lintel

[bsr]

This is a follow on question to my last post:

Fit lintel without removing course

Hi I need to fit a 900mm meter box angle lintel into a single skin block wall. I was thinking that I could try fitting it without having to remove a course? I was thinking I could drill out the mortar bed for the length of the lintel, would somehow have to clean up with bolster/old...

www.diynot.com

I've got the lintel in. The joint is tight, I've only got a couple of mm (see pic). In some places the lintel isn't touching the bricks above.

Q1. Would you put a wet mix on top of the lintel, then push in and dry pack the bearings? Otherwise it won't be doing anything.

Q2. Any idea how to get the packing mix into a 3mm gap? Decorators scraper? Too narrow for a tuck pointer.

Thanks

 

[jeds]

Typically you'd leave a 25...ish mm gap. How have you managed to slide a lintel in with a 3 or 4 mm gap above and below? A wider photo would help.

 

[cdbe]

I would just foam it all in when you fit your hatch, it's not really doing much. Use a decent brand and avoid this one, I used it yesterday and it's crap, sets like candyfloss:

 

[bsr]

Typically you'd leave a 25...ish mm gap. How have you managed to slide a lintel in with a 3 or 4 mm gap above and below? A wider photo would help.

It's a meter box lintel (like a steel angle) for a single skin wall. I drilled out the mortar course and slid it in.

 

[jeds]

Oh, right. I'd pack beneath with a slate and any mortar you can get in.