Double skin wall - New doorway with access from only one side help

[deefadog]

Good morning all,

We are planning on putting in a single doorway at the back of an integral garage, which behind this is a void, which we need access to.

The wall is double skin and I was hoping to get some help on how we tackle this, My plan is to use 2 x acrow's with strong boys. Should I tackle each skin separately? supporting, cutting and installing a lintel? Once If I do this, once I have the first lintel in how do I support the second skin with the strong boys?

I am sure there is an easy solution, thanks for any help.

 

[stuart45]

Is it a cavity, or 9 inch wall?

 

[deefadog]

Hey, I believe it's a cavity wall, breeze block and it is load bearing

 

[stuart45]

You can get XXL strong boys now to prop cavity walls.

 

[deefadog]

You can get XXL strong boys now to prop cavity walls.

Thanks, yes i have seen them and was planning on using them, so would you just Add the strong boys one course above the lintel height and cut the lintel and door way through both skins first, then add in the lintels each side? Thats the bit I am struggling with.

I'll add Cavity closers, fire-rated doors etc.

 

[stuart45]

I'd prop it and cut out the doorway. Then stick the lintels in. Is the other side an external wall? If it is you need to think about a tray, or use a Catnic.

 

[deefadog]

The other side is a large Void, which we don't have any access too. It's a town house and the void is under the Kitchen and Dinning room which are on the 1st floor.

 

[stuart45]

How old is the property? The walls look stable enough to cope with the masonry below to be removed. Cutting out for a door is generally a straightforward job.

 

[deefadog]

How old is the property? The walls look stable enough to cope with the masonry below to be removed. Cutting out for a door is generally a straightforward job.

It's about 18 years, so, new build.

 

[stuart45]

I wonder what was the point of having a void there.

 

[noseall]

Good morning all,

We are planning on putting in a single doorway at the back of an integral garage

Do both leaves together. Have three acrows ready. Have some glass-wool insulation batts ready, to stuff into the cavity - to prevent blown-in cavity crap falling out. Knock both lintel bearings out, but fit the inner leaf cavity lintel first. This will allow you to point mortar in, from the back of the lintel. We put a bead of gear (mortar) onto the lintel, then press it up into place using the spare acrow, then brick underneath.

 

[deefadog]

I wonder what was the point of having a void there.

I think because we have been built into a hill, so garden level is 1st floor, there would been no room for windows etc so they could not class it as a habitable space, but it was Barratts, so cheaper to have the void than get creative I guess.

 

[deefadog]

Do both leaves together. Have three acrows ready. Have some glass-wool insulation batts ready, to stuff into the cavity - to prevent blown-in cavity crap falling out. Knock both lintel bearings out, but fit the inner leaf cavity lintel first. This will allow you to point mortar in, from the back of the lintel. We put a bead of gear (mortar) onto the lintel, then press it up into place using the spare acrow, then brick underneath.

Awesome thanks! Great info appreciated