Anonymous wrote:11:43 again -- Builder, how can I determine whether the foundation on my addition can support brick, short of asking a professional? I would like to have some idea as to feasibility before I get my hopes up and head down this road.
Builder again....and I'm also a civil engineer by training. For your two story addition, you will need to dig around the foundation to see if there is a "ledge" bordering the foundation wall. The "ledge" is nothing more than a 6" to 8" shelf part of the foundation wall which will support the weight of the brick or stone veneer. The ledge is where the mason will start to lay the first course of brick or stone and partially supports the weight of the brick or stone. I will say that if your foundation wall is constructed of cinder block rather than poured concrete, the chance of a ledge being there. Also, adding a ledge to a foundation costs a bit more and generally done if the exterior was planned for brick or stone veneer. There would be no need to install a ledge if the addition was not planned for brick or stone veneer.
Even if there were a ledge present or you were able to construct one (more on how to do that later), changes to your soffit and fascia will be required as they will need to be pulled out to accomodate the thickness of the wall resulting from the added veneer material.
If you don't want deal with the ledge or fascia/soffit requirement, there is another, bettter option. You can get the look or brick or stone veneer by installing "face brick or stone" to the exterior walls - no ledge required. A typical face brick is 1/4" thick vs. the 4" standard veneer brick that you typically see. When installed, the 1/4" brick looks every bit the same. We use this practice to install brick in areas with no structural support such as around dormers and gables. The key here (as with every other construction practice) is proper installation to ensure there is proper drainage for the wall. The 1/4" brick is mortared directly on to the wall via a wire mesh with a drain plane. Think of this as installing tile on a shower wall or a kitchen backsplash. When installed correctly the look is the same as conventional brick veneer. Also, with this type of installation, you will not need to bother with pulling out your fascia and soffit arrangement.
Getting back to how to install a ledge to support conventional brick or stone veneer, you can dig down, approximately 2-3' below grade and pour the concrete ledge. You will then also need to bolt the ledge to the existing foundation wall using special bolts and nuts. This is to ensure the ledge does not drift away from the base concrete foundation. Unless you absloutely have to have the brick veneer, this will be a very costly and impractical endeavour.
The other option is to bolt an appropriate sized angel iron (structural steel beam) to the foundation wall. This beam will then become your "ledge" onto which the brick and/or stone can be installed up the wall.
Best of luck