The Myth of R-Value and also standard foam filled hot tub covers
R-value is a form of measurement of the capacity to resist warmth transfer for products like the fiberglass insulation in your house or maybe the insulating foam in hot tub covers The intent is that, the greater the R-value, the far better the warmth storage space and also, heat retention would be the main job of any kind of hot tub cover.
Many industries making use of R-values are controlled by FTC standards. Readily offered insulation should pass independent tests developed by American Requirements and also Testing Methods (ASTM) so about be marketed or noted using their R-Value.
The Misled Masses: As there is no FTC identified independent examination for spa covers, So ANY stated R-value stated by a spa cover dealer is in reality an unregulated, unmonitored “interpretation” of an offered insulation worth. It is open to misstatement and also misuse, from including the R-value of an air space in between the water and the bottom of the cover, spacing in between the plastic as well as the cover insulation, or merely blatantly inflating the make believe number. Some hot tub dealers specify solely the well-known R-value of the insulation itself, but obviously that does not suggest that it was evaluated and also endorsed to use in hot tub cover applications.
The R-value of the real foam insulation, despite the density, is ONLY ranked for usage in DRY building applications! Which represents that the R ranking of the foam is only relevant ought to it occur to be used in a wall, attic room or flooring. Because should it were to be used in a damp setting, that sort of insulation would fall short promptly.
Foam Density and also Foam Thickness.
These 2 elements that spa cover suppliers assert affect the R-value of spa covers, when as a matter of fact that R rating itself has nothing to do with the foam when it is used in a hot tub cover. In fact, it is as misinforming as the idea that a taper on the cover will actually maintain it from getting heavy.
True, the foam thickness and also density would have a bearing on the insulation homes In the event the Use of the foam were in conformity with the made use of an entirely DRY environment.
No matter if the dealership claims his spa covers are made with the most costly spa cover foam (rigid cellular polystyrene thermal insulation) readily available, withstands damage, vapor absorption and also chemical damages more than all the others they’ve tested. The reality is, R aspect is NOT something they examine, and STANDING UP TO breakage and saturation are not the like PREVENTING it completely.
When searching for and contrasting spa covers, ALL cases related to R-value of a cover that has foam are totally unsubstantiated. Foam Thickness and also Foam Density do not have any ADDED R VALUE, because the foam is not designed to be applied over a wet environment. Most spa cover dealers repeat specifically the same numbers as well as as a result hot tub proprietors have actually been trained to think the lie. Some suppliers employ some expensive charts to corroborate their cases, however the bottom line is those insurance claims can not be in accordance to the ASTM.
R-value testing of materials is completed at room temperature, and does not think about dampness as well as vapor. In the spa environment, there is warm water and great amounts of steamy wetness. Each which will considerably minimize the R-value of any kind of foam. A spa at 105 degrees will beat the R-value of any foam examined to use in a completely dry application.
Do not allow the R-value of foam be thought about the dimension for spa cover top quality. Rather look for a spa cover without any FOAM. Instead, hot tub covers that use air filled chambers as a choice for rigid foam boards will certainly out preform any other, in any type of examination or actual hot tub application. (Hello there, like those from SpaCap.com )
Don’t be deceived by claims of high thickness and also weight, vacuum wrapped in sheets of heat bonded polyethylene, secured in hefty gauge marine grade vinyl, with chemical resistant scrim as well as stitching. It won’t shield as well. It will certainly still end up being saturated, warped or broken. It absolutely was out-of-date thirty years earlier.
SpaCap.com spa covers don’t use foam panels like the normal rigid foam filled hot tub covers. Instead they use air chambers to do the insulating. Aside from being a lot more effective, the air chambers don’t suck up dampness like every foam-filled cover ever made.
Why not go to SpaCap.com and also purchase a hot tub cover for your spa today and get the next generation of hot tub covers.