The Myth of R-Value as well as traditional foam filled hot tub covers
R-value is a type of dimension of the capacity to resist warmth transfer for materials like the fiberglass insulation in your residence or possibly the shielding foam in hot tub covers The intent is that, the higher the R-value, the much better the warmth storage and, warmth retention would be the primary task of any kind of hot tub cover.
Most markets making use of R-values are regulated by FTC criteria. Commercially marketed insulation has to pass independent tests created by American Requirements and Testing Techniques (ASTM) so regarding be marketed or noted using their R-Value.
The Misled Masses: As there is no FTC identified independent test for spa covers, So ANY mentioned R-value mentioned by a spa cover supplier remains in fact an unregulated, unmonitored “analysis” of a provided insulation value. It is open to misstatement as well as misuse, from including the R-value of an air space in between the water and also the bottom of the cover, spacing in between the plastic as well as the cover insulation, or merely blatantly pumping up the fictitious number. Some hot tub suppliers specify solely the recognized R-value of the insulation itself, but naturally that does not indicate that it was evaluated and recommended to utilize in hot tub cover applications.
The R-value of the real foam insulation, regardless of the density, is ONLY rated for usage in COMPLETELY DRY building applications! Which indicates that the R ranking of the foam is only suitable must it happen to be used in a wall, attic room or floor. Since must it were to be made use of in a wet environment, that sort of insulation would fall short rapidly.
Foam Thickness and Foam Thickness.
These 2 variables that spa cover dealers claim influence the R-value of spa covers, when actually that R score itself has nothing to do with the foam when it is made use of in a hot tub cover. Really, it is as misleading as the idea that a taper on the cover will really keep it from obtaining heavy.
True, the foam thickness and density would certainly have a bearing on the insulation residential properties In the event the Usage of the foam remained in compliance with the developed use a totally DRY setting.
Regardless if the dealer declares his spa covers are made with one of the most expensive spa cover foam (rigid cellular polystyrene thermal insulation) available, stands up to breakage, vapor absorption and chemical damages more than all the others they’ve tested. The fact is, R element is NOT something they examine, and also WITHSTANDING damage and saturation are not the like PREVENTING it entirely.
When searching for as well as contrasting spa covers, ALL cases related to R-value of a cover that has foam are absolutely unsubstantiated. Foam Density and Foam Thickness do not have any type of ADDED R VALUE, since the foam is not created to be used over a wet setting. Many spa cover dealerships repeat exactly the very same numbers as well as as a result hot tub owners have actually been trained to think the lie. Some dealerships employ some elegant graphs to substantiate their insurance claims, nevertheless the bottom line is those cases can not be in conformity to the ASTM.
R-value testing of products is finished at room temperature, and also doesn’t take into consideration dampness and vapor. In the spa environment, there is hot water and also excellent quantities of steamy dampness. Each which will considerably minimize the R-value of any kind of foam. A spa at 105 levels will defeat the R-value of any type of foam examined to utilize in a dry application.
Do not permit the R-value of foam be considered the dimension for spa cover quality. Instead search for a spa cover without FOAM. Instead, hot tub covers that use air filled chambers as a choice for rigid foam boards will out preform any other, in any test or actual hot tub application. (Hey there, like those from SpaCap.com )
Do not be tricked by claims of high thickness as well as weight, vacuum wrapped in sheets of heat welded polyethylene, sealed in hefty gauge marine grade plastic, with chemical resistant scrim and also stitching. It won’t insulate as well. It will certainly still come to be saturated, distorted or busted. It really was outdated thirty years back.
SpaCap.com spa covers don’t utilize foam panels like the normal rigid foam filled hot tub covers. Instead they make use of air chambers to do the insulating. Apart from being a lot more efficient, the air chambers do not suck up dampness like every foam-filled cover ever made.
Why not see SpaCap.com as well as order a hot tub cover for your spa today and obtain the next generation of hot tub covers.