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Building Homes or Extensions/Siding over ornamental concrete blocks

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Expert: - 7/19/2009


Question

Concrete Blocks
My home's lower basement level has 2 small walls constructed
with flower-patterned ornamental concrete blocks (see
attached photo).  I would like to attach siding to cover up
the unsightly blocks as well as seal the walls from the
elements.  The previous owners just basically placed
aluminum sheets on the inside walls to try to keep the water
out.  I was wondering if I would be able to use an adhesive
to attach the siding to the blocks instead of using concrete
nails or screws.  The concrete blocks are quite brittle and
I am afraid of the concrete chipping away.  If you have a
better solution, such as filling the voids in the pattern
with something, I am willing to hear it.  I might add that I
live in Oregon where it rains a lot.

Answer
Jack, there would be several choices.  I covered up something similar with Hardie cement panels.
http://www.jameshardie.com/builder/products_trim_hardietrim.py

another product that may work well for you would be one of the vinyl skirting products:
http://ashvillemobilehomes.com/skirting.html

Either solution would require a cap trim and j type trim at the door.  Plan on installing Tapcon fasteners in the mortar joints.  I would use both construction adhesive with a minimum number of Tapcons.  Caulk the top of the cap trim to prevent water entering.  It looks like you may need to improve drainage away from the doors.

Dan Griffin

Expertise

I can answer almost all questions related to the total construction process. My expertise is in commercial construction, though I can field most any residential question. I have hands on experience in concrete, heavy equipment, masonry, all phases of carpentry, interior finishes, and I am fairly strong in mechanical and electrical.

Experience

I have over 20 years experience as a commercial carpenter and commercial construction superintendent. I have another 20 years experience in facility management for a major school district.

Organizations
My favorite hobby for he past 12 years has been singing bass in a The OkChorale men's barbershop chorus and the Mature Moments quartet.

Education/Credentials
I hold a Bachelor's degree in English and Math. I have completed many continuing education hours in the building trades. I hold a Master Carpenter card from the AGC, Associated General Contractors.

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