My husband and I have discovered Reflectix for making our own sunshades. There is a remarkable difference in how much cooler it is inside when these are up.
However I read a terrifying
article this morning: opinions please!!!!
Reflectix is a great product when being used for it’s intended use as a reflective insulation or radiant barrier. It is not intended for use in residential or RV windows. When used on the inside it can break any window whether it is single or double pane. The heat radiated from it will not dissipate through the glass at the needed rate, it will continue to build and eventually the glass could break. It is however, more common for double pane windows to break. It can also ruin window tint or film because of the excessive heat build up.
Windows that have Reflectix used on the inside will radiate enough heat so that the excessive heat can be felt up to 6′ away depending on conditions. The surface temperature of the glass can exceed the surface temperature of the wall by 30 to 50 degrees when the outside temperature is approximately 95 degrees.
Windows that have a 90% UV shade fabric will be approximately 30 to 50 degrees cooler than a window using Reflectix. The benefit is you will actually be cooling rather than heating the interior of your RV or home and not causing any damage. When your windows create enough heat to break the glass it is not unlikely that any rubber seals or sealing compounds used for keeping moisture out will be damaged. The other benefit is outside window covers that offer privacy and can be used all year long and do not leave a messy residue on everything they come in contact with.
The choice is yours to make based on your circumstances and needs but, now you have a little more information to help make your decision when purchasing window covers.