I am having a three foot addition built on my kitchen, using techniposts. My contractor says that I cannot put the kitchen sink in the 3' addition because it could not be insulated. Is there any way I can insulate the sink enough to keep it from freezing? I live in upstate New York
To clarify; Its not the "sink" that is the concern, its the plumbing lines that need to be properly insulated.
You might want to look into closed-cell spray foam as it has a higher R-rating per inch thickness than conventional fiberglass batts (allthough it is approx. 4x the cost of conventional fiberglass batts).
Without having additional information, not knowing/being able to see the actual project, location, design, framing dimensions, etc, etc = that's about all I can offer.
Its an important point as lines can, and do freeze, on similar designs.