SternWake said:
If one has no ventilation, then and only then, this is true. But what logic is there in having no ventilation in hot weather?
This 'insulation has no effect on keeping the interior cooler, and only acts to keep the interior hotter at night, Holds no water in my opinion.
Without insulation, the interior will get significantly hotter, and then have more heat to re radiate when the sun lowers and things cool off.
If the insulation can slow the rate at which the interior absorbs the heat, and it remains even a few degrees cooler, these same interior objects will then have less heat energy to reradiate to the interior.
Parking in the shade/ making shade is not always an option. Any efforts which reject heat from making it to the interior are worthwhile. And this same insulation which can reduce the radiated heat from cooking everything inside like a convection oven, would only retain the heat inside, if one has NO ventilation, no ability to exchange outside air for inside air.
If it is hot enough that this is an issue, but someone insists on not having any method of exchanging inside air for outside air, then one seriously needs to rethink their ability to employ logic, much less share their faulty logic and present it as fact.
highdesertranger said:
you know what, I will finally reply to this logic of no insulation. anybody who thinks no insulation is better than insulation is naïve at best. given the same wall in the sun the one with no insulation transfer much more heat to the interior than an insulated wall. then to say that the heat stays trapped, is plain wrong unless we are talking about an sealed vehicle. another point is if it's hot out what are you doing cooped up inside. get out. I sleep out side unless it's raining or snowing so hard I can't, and then I want a well insulated vehicle. I consider insulation more of a cold weather thing, cause like I said if it's hot what are you doing inside. I insulate my floor boards and firewall too. to keep the engine and transmission heat out. are you saying this is a bad idea? I really don't like tents in the summer why because seconds after the sun hits them it is stifling inside. why, because there is no insulation. I do see the value of parking in the shade when it's hot or the sun when it's cold. but many times I am in the desert where there is zero shade. if you are in a snow storm or blizzard there is no sun, so parking in the sun is not an option. I just don't get this no insulation thing is better. if it's cold out what do you do, put on more layers. what is that, I will tell you it's insulation to hold your body heat in. com'on it's common sense it not rocket science. highdesertranger
I did expect some reactions on the insulation issue, but my comments were misinterpreted.
But what logic is there in having no ventilation in hot weather?
Clearly there is a relationship between insulation and ventilation as I stated, but I think that ventilation is much more important to keep the interior cool.
insulation has no effect on keeping the interior cooler
Insulation may keep it cool
er longer, but eventually the temperature catches up inside. Only ventilation and in my opinion especially "natural and/or forced convection" produces the best results in off-grid situations.
If the insulation can slow the rate at which the interior absorbs the heat, and it remains even a few degrees cooler
Insulation
will slow heat penetration, yet at the end of a hot day the interior temperature catches up, in my experience. Keeping it a cooler is by means of ventilation, not insulation.
Parking in the shade/ making shade is not always an option.
Correct! Parking in the shade should be the first thing to consider, but is often not an option or desired as in off-grid situations, many of us have solar and thus dependent om the sun.
Any efforts which reject heat from making it to the interior are worthwhile.
Correct! but as I said, "I think insulation is highly overrated". I certainly don't propose to refrain from insulating an RV. It has its appropriate uses and a moderate application is wise in any situation.
but someone insists on not having any method of exchanging inside air for outside air, then one seriously needs to rethink their ability to employ logic, much less share their faulty logic and present it as fact.
You completed misread my statement. I talked about overhyping insulation, yet increase ventilation.
anybody who thinks no insulation is better than insulation is naïve at best.
Again, I don't propose eliminating insulation.
then to say that the heat stays trapped
I say remove through ventilation, but insulation doesn't help at that time.
I consider insulation more of a cold weather thing
I agree with you on that completely and I should have stated that my remarks focused on warmer locations.
What it all comes down to, is insulation and ventilation are two separate issues. I think
over-insulation of your RV is unnecessary and may even lead to other problems. Ventilation should be a priority.
Van Williams
