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Frank Clark 09-20-2010 07:55 PM

old double wall brick house
We own an old double story double wall brick farm house. No one has lived in it for many years and it's showing rot in the roof.
I am going to have to replace the entire roof and supporting construction.
My problem is how is the roof attached to the brick walls and how can I insulate the walls while the roof is off.
The house has also been infested by racoons and other varmits.

Or am I just wasting money on the project, house was built in 1912.

concretemasonry 09-20-2010 09:48 PM

If it is a 1912 double brick wall farmhouse there was no standard except that is survived with abuse and no maintenance until now. Make sure there is some bracing on the walls since removing the roof may eliminate some lateral support until a new roof system is installed.

The only way to find out is to see what is there when you are there when the roof is torn off and make the attachment similar to what was done before. I assume the exterior of the walls will need some tuck pointing to areas with weathered mortar joints.

Once you have and idea of the real wall cross-section, you will be able to determine the options of putting or not putting insulation in between the brick layers. There may not be room for insulation especially if it is a bonded wall. Putting insulation on the inside as you finish is and option, but in many climates, exterior foam insulation is more effective, but it totally changes the appearance.

there is a good thread on this site about a 400+ year old masonry home that is being totally rebuilt on the interior and above the roof line. Search for Scott Shumaker, who started the 4 star thread. This was a stone home that used clay tile to raise the roof and the superior products available in Germany.


stuart45 09-21-2010 06:53 AM

1 Attachment(s)

Originally Posted by Frank Clark (Post 504612)
My problem is how is the roof attached to the brick walls and how can I insulate the walls while the roof is off.

The roof rafters may sit on a length of 4x2 or 4x3 timber which is bedded to the top of the wall with mortar. The weight of the roof keeps it on.
Nowadays we use metal straps to help hold down the roof as a hurricane could lift it off.
Attachment 25014
If you have a minimum 2 inch cavity between the brick skins it may be possible to pump insulation in to the cavity as Dick mentioned.

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