Old Siding Under Newer Siding

There are two options for this.

Old siding under newer siding.

Removing asbestos is often cost prohibitive for most people. This usually happens on walls with wooden siding that is not uniform or hand split such as cedar shakes. Long think pieces and mounted side by side horizontally across the house. If there is a problem it can be repaired before the new siding is added.

If the siding cedar or hardboard is in good shape and the substrate is wood it is foolish to remove the old siding. Other than color which dictates the appearance of vinyl siding there are two main shapes or types. But be sure to check your local building codes first to see if it is allowed in your area. It also eliminates the problem of mold forming when insulation is attached directly to the substrate.

Inspecting the walls under the siding when the old siding is removed from your home the home siding contractor will inspect the wall and insulation to ensure it is okay. In a 2015 cost vs. Applying a layer of sheathing or sheets of foam insulation over the asbestos then covering it with vinyl siding is a common practice. Going over the existing siding adds to the r value by creating an air space between the insulation and old siding.

Just recently i got some clear confirmation that our policy of tearing off old siding before installing new siding is the right policy. Cut into square or rectangular shapes and is layered vertically to give the impression of many layers of shingles. However removing the asbestos siding first though more expensive is the best alternative in the long run. Best siding value good investment.

On the right this is that same home and an example on why you never install new siding over existing siding as this is what you will find underneath of it.