In the preparation of the apartment for the winter period suggest to seal the frame as it has long been I do. It does not require neither paper nor CPA, nm foam or wool. Only need window putty Yes plastic film. Enough to glue to the frame “sausages” of putty, cover it with the strip of polyethylene film and… to close the window. The film does not allow the frame to be glued to the box, and putty will repeat all the irregularities of the frame, and providing a perfect fit to the window frame.
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