These ones are my favorites for a couple reasons. First, they stuff in there, so you don’t need to worry about attaching velcro or worrying about them falling out. And the covers can be removed for washing, which is great in dusty environments. They are a bit bulkier than other heat blocking methods, so keep that in mind. But for blocking out the sun’s rays, they are awesome.
If you do any cold weather camping, they can also act to help insulate and keep the heat in – these standard vent covers lose a lot of heat since warm air rises, even when the vent is closed.
And if you like those lazy afternoon naps – or to help your kids nap, this will help block the sunlight from hitting the bed or just the light in general from bothering you.
- RV Vent Insulator with Reflective Surface: Blocks the sun's damaging...
If you are handy, you could also cut a foam block, cover the top with a reflective surface and sew the rest. But the supplies might cost more than just buying a ready-made one, unless you have them on hand already.
There is a cheaper version, which is a cut-to-size piece of reflective material which attaches with velcro, but many people report that they have to replace with stronger velcro, so be aware of that. Unless space is really an issue, you are best to consider the other version.
If you have the reflective material already – the most common is the style that seems to be reflective bubble wrap – it is as simple as cutting it to size and attaching it with velcro.
Do remember that while the cover is on, you won’t be able to draw any circulating air from the fan so keep that in mind. Also, be aware if you use one in the bathroom – you often get a lot of light from that fan and many RV bathrooms have no windows, so it is important to remember that as well. It might get tedious to put up and remove the velcro version, but if you use the stuffed version, make sure you remove it before using the shower!
You can also do the same treatment for windows too. There are precut ones for the standard RV door window size, but for most other windows, you will need to cut your own.
[…] A 2-3 pieces of pool noodle cut to size can be used to block the sun and heat coming in through a RV vent on the roof, if you don’t have a proper sun blocking vent cover. […]