View Full Version : Attaching New Floor to existing Brick Walls

06-13-2005, 08:18 PM
I was wondering if anyone has a good way to Run Floor joist for a second story inside of bare brick walls? I want to run 2X12 a span of 20' at 12" but I am not sure what the best way to butt them up to the Brick walls.

thanks for any help

06-17-2005, 03:46 PM
ok, when it goes a week I take a shot.

you can fasten a 2x6 to the wall, and hang the joists from that.

06-17-2005, 03:49 PM
If it was me I would pull/chip the bricks out that I had to attach the ledger board too and put them back when I am done.

It isnt hard at all.

Edit: Im Retarded

06-17-2005, 05:34 PM
pull them out for what?

06-17-2005, 05:35 PM
Edit: Bare Brick Walls. :oops:

Damn its been a long week. :roll:

06-17-2005, 05:37 PM
ok, so I can ignore you? :lol: :lol:

06-17-2005, 09:18 PM
whats the best way to attach the 2X6 to the Brick to make it strong enough for the weight of the floor?


06-17-2005, 09:26 PM
OUch tricky. THere isnt a ledge of brick to rest on? No framing below? I would probably go with the above and lots of bolts to tie it in. But if it is old brick then it might be crumbly....MAybe a prayer first.

06-17-2005, 09:46 PM
Well, if you can get to the other side of the brick (and if the wall is solid) you can just drill holes right through and bolt the 2x6 to the wall. If you don't want to deal with the anchors on the exterior, I think hilti makes something for this, but I'm not familiar with them.

Animal AKA Will
06-18-2005, 11:14 AM
I checked MAssachusetts building code, for a 20' span to hold the ledger into masonry you need to have either:
1/2"bolts spaced 1'-0"
7/8" bolts spaced 1'-6"

and in either case the bolts must be 4" deep into the wall. Personally I would go through the wall & have a bolt & washer on the outside with a washer & nut on the inside.
Plus the ledger should be the same size as the joist it supports. You can use joist hangers directly to the ledger or set the joists on the ledger with blocking joists in between.
Your local building code may vary.

06-18-2005, 02:49 PM
Sounds like a good plan.

Tom R
06-18-2005, 03:30 PM
I agree with An.AKA, - - but personally I would also find a way to add some pilasters (under the ledgers) - - be they brick or boxed wood.

Animal AKA Will
06-18-2005, 04:23 PM
Tom R makes an important point.