does this require a vapor barrier underneath?
917700
If you have boards as floor yes.if it's plywood maybe not as much.if your vapor barrier is under plywood not as much.but I put Tar paper under my plywood and just 1/4 cork on top of plywood.JG
917701
I think that would depend on the surface you are putting it on. I would recommend one if you are putting it over concrete but not necessarily over wood.
917702
We are using it for roadbed on a train layout so can't help you with your question.
2233708
That is a very good question! But we do not have it vented and it works out fine.
1003244
I'm not an expert on vapor barriers, but this product is just as good (if not better) than the plastic used in the crawl space of my home (used by the builder). This plastic is of good quality, I used it regularly to place rock on for my landscaping.
1857825
Yes and put a Vacuum on it.It's just air more or less to check for leaks.It will cause you problems if you leave it in thereit's not Freon.
635089
it did before i had it installed - i guess it will close as good as it supposed to - i realize it being light its not airtight. but i m glad i bought this vent - i had purchased another but returned it to the local store - it works great not as loud .
2024336
Yes it does. I usually dampen the surface underneath for extra staying power, but it does not slip.
1305252
It's not necessarily required. You simply need to lay it on top of the bowl. The action of heating will create a vacuum that seals the bowl. But I have also just laid it over a plate to prevent splatters. In those cases, no seal develops, but it still helps to keep moisture in.
39398
The weed barrier is permeable, so water will pass route without any problems. Strictly speaking I don't think it matters to your vegetable garden whether your poly tubes are under or over the barrier. However, for future access to the watering system you may want to put it on top as having to remove the layer in order to work on your system may be a pain.
446057
Not that I know of. It might be able to under the grate but I have not checked. It stays very cold
1384082
You do not require a cover the plants don't not need to be in a dome. The plants are continuously being sprayed underneath the manifold therefore high humidity is not required
873400
I've seen no damage underneath. The top and sides do get very hot. I keep the back of mine away from the wall.
190342
Yes, but not bad. It does where the glass is exposed. The plastic sleeve does a decent job of insulating the glass
1905282
no. you should see vapor coming up from the hole in the middle of the silver top. Sorry I didn't respond sooner, I thought the email from amazon was just another advertisement
396413
This is not a sealed housing. However insulation may be placed tightly around it, thus controlling heat escape. Gordon K.
1654960
Yes. Nothing should be underneath and on top just the cover so it heats the way it's supposed to.
364820
This is a nonvented heater so it does produce water vapor. My park model is not very tight so that is not much of a problem for me, but if your unit has tight windows and doors you will build up some moisture inside.
2279854
No. It's a cartridge you stick in the unit and you plug it in. It's supposed to heat up and let out the vapor..: it is a piece of junk. Don't waste your money on it.