Converting Single windows to Double Pane?

It's probably either remove and replace with dual-pane, or a DIY project as described

Hi Bob,

I would do a sandwich of thin plexiglass. One on the outside of the existing glass and one on the inside. That will give you a triple glazed window.

On the outside I'd cover the entire frame. Add a four inside strip of Styrofoam to the bottom of each window on the outside. It will not look nice, but it will keep the bottom of the glass warm on the inside, so that when condensation forms it will roll down the glass, hit the warm surface, and return to the air inside the RV.

I'd be tempted to cover the entire frame on the inside.

On the inside I'd make up reflectrix or similar covers which would cover the entire window for use after the sun is down. Use industrial velcro so you can put the covers on at night. I leave my expensive Insulbright covers on during the day time on the non sunny side of the RV.

I'm sure you know the grade of clear silicone to use.

I'm also certain you are aware it is the air gap that makes double glazing effective. It needs to be a skinny gap--because you don't want convection currents inside the cavity you are creating.

BTW I'd still add the dual window fans to the cold air return. That way, on days when the 1500 watt heater is enough the heated basement will get some air going through it. Nothing is more frustrating than a fresh water line freeze up.

Be sure to do something with the fridge--either the kit from Norcold, or some sort of thermostatically controlled heat strip in that area. I went through 4 bulbs last winter during wind driven blizzards that destroyed them.

I'm adding the ARP device to my fridge this year.

I have to assume you are talking about the frame around the actual glass and not the frame the glass units insert into. A double pane glazing unit will be thicker/wider and will not fit inside of the same frame the single pane unit is wrapped with. There is also the possibility that new double pane glazed glass assemblies will not fit into the same frame that inserts into the exterior walls of the camper.

You could accomplish a similar affect by placing plexiglass on the inside of the existing windows. I would want to cut the plexiglass to match the height and length of the existing window frames

I dunno beans about travel trailers, having only owned B's an a C. My totally-uneducated guess would be to expect the frames to be different, but fit the same holes.

But if Tango is still in business, I'd try calling them and ask whose windows they use. If they're not in business anymore, take some close-up pics of the frames showing distinctive detail. Then go with the pics and see if any of the local RV repair people can identify them.

The only window brand I know of is Hehr. You might visit their website and nose around a bit to see if there's anything to be learned.

Good luck!

Jim, "Mo' coffee!"