Wall anchors in hollow brick

[TheSandman69]

I'm attaching a 6x2 to my house for a deck using M12 sleeve anchors. Some of them are tight, but it appears some have blown the back out of the bricks and the expansion sleeve isn't catching. I can put more in, but I'm wondering if putting them in the cement between the bricks might be a better option, or filling the bricks with some sort of resin before inserting the bolts? Any idea?

 

[steve daulby]

The mortar is weak and friable and shouldn't be used for fixing, your fixings should be into the centre of your bricks and probably no more than 80mm into your 100mm wide brick. Threaded bar, into a resin is probably better than expanding anchors.

 

[TheSandman69]

The mortar is weak and friable and shouldn't be used for fixing, your fixings should be into the centre of your bricks and probably no more than 80mm into your 100mm wide brick. Threaded bar, into a resin is probably better than expanding anchors.

Cheers mate, think I'll take the loose ones out and pump them with resin then

 

[steve daulby]

No problem. Drill the hole, blow out with a straw (use goggles), so there's no dust left in it, otherwise you'll just fix your anchors to the dust not the brickwork. Put a square flat or round washer on the nut. Threaded bar cut to suit is usually cheapest. If you can stagger your bolts say at 450 centres (2 bricks) with one through the centre of one course of bricks and one through the centre of the other course of bricks, you'll minimise the chance of the plate rotating. The image below is of clockwork not brick but applies and face fixing directly with hangers and with bolts in plastic rawlplugs is an alternative.