Celotex Under Siding

Splits and rotting everywhere.

Celotex under siding.

My house has the black celotex fiber board under the aluminum siding on the first story and plywood on the second. Thousands of houses in my area built like that when i started in 1970 we used i sheet of ply in the corners and the rest was celotex now they are using 1 sheet of 1 2 osb in the corners and 1 2 foam board on the rest vinyl siding on that i don t know why we bothere with locks as anyone could go right thru any wall in 10 minutes with a hammer. Can i remove the wood and side over celotex. At siding hardboard we discuss hardboard exterior building siding such as sold under the abatibi and boise cascade brands.

At sheathing exterior product index we describe products used on building exterior walls roofs as a structural sheathing or as a nail base sheathing. The company grew throughout the 20th century and expanded its product line to include a variety of construction materials such as roofing shingles and siding. I m going to be removing all of it and putting up new zip system sheathing and then new vinyl siding. Since i am doing this predominantly myself i of course have to be cognizant of the weather while things are exposed.

As you know here in maryland temperatures can fluctuate a lot no matter what season it is. I will hit the studs. Also i was thinking of house wrapping this before siding just to seal it up a little better. The problem is i don t have the budget for vinyl siding and sheeting.

The current siding is a wood lathe siding that is at the end of its life. Celotex was founded in the early 1920s as a fiberboard insulation company.