I just bought a brand new colonial home. It happens to be very cold where we live right now & I am having a problem with condensation forming on the inside of the windows when we shower, that lingers on teh windows all day. Unfortunately all from facing windows are affected, as well as bathroom windows, due to the placement of the bathrooms. Are there any products to protect the window sills from warping over time? The windows are thermal doublepane (can't remember the brand). Also, is it worthwhile to install vents in the bathrooms? And would this eliminate my problem? Thanks.