waterproof-foundationWhen building a basement you have to remember the tar sealant which seals the concrete to waterproof-foundation and prevent water from leaking through the concrete. It is applied to the outside surface of the foundation before backfilling around the house.
You can see the tar in this picture before the backfilling has been done. Notice, in the front left hand corner, no sealant is applied to the garage wall which has no basement under it. Who is applying the sealant? Be sure they specify that they will supply the sealant, unless you are supplying it. Check the pricing that you can get it for as opposed to what your sealant contractor bids for it. Your contractor will also have to tell you how much sealant you will need. The reality is, if you have leftover tar sealant, what are you going to do with it? Give it to the contractor? Or save it till you build again in 2 years when it would be all hard? This one I would probably opt for letting the sealant contractor supply himself and then he could use it up in another job. That is what we did. You'll need to coordinate with your sealant sub. The sealant is done before the backfilling is done. Be sure you sign a contract with your sealant contractor via the fax before he begins. Indicate whether he is providing the sealant and the labor and materials costs. (See Fax line page) window well on foundation
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