The Misconception of R-Value as well as conventional foam filled hot tub covers
R-value is a kind of measurement of the capability to stand up to heat transfer for materials like the fiberglass insulation in your house or perhaps the shielding foam in hot tub covers The intent is that, the greater the R-value, the much better the warmth storage as well as, warm retention would be the main work of any hot tub cover.
The majority of industries utilizing R-values are regulated by FTC requirements. Commercially marketed insulation needs to pass independent tests created by American Specifications and also Testing Methods (ASTM) so as to be advertised or marked using their R-Value.
The Misled Publics: As there is no FTC identified independent test for spa covers, So ANY mentioned R-value stated by a spa cover dealership remains in reality an uncontrolled, unmonitored “analysis” of a provided insulation worth. It is open to misrepresentation and misuse, from including the R-value of an air space in between the water and the bottom of the cover, spacing in between the vinyl and also the cover insulation, or merely blatantly blowing up the make believe number. Some hot tub dealerships specify exclusively the recognized R-value of the insulation itself, however obviously that does not mean that it was tested and also endorsed to make use of in hot tub cover applications.
The R-value of the actual foam insulation, despite the thickness, is ONLY rated for use in DRY building applications! Which symbolizes that the R score of the foam is just suitable needs to it take place to be used in a wall surface, attic room or floor. Due to the fact that must it were to be made use of in a moist atmosphere, that type of insulation would certainly fall short swiftly.
Foam Thickness and also Foam Density.
These 2 elements that spa cover suppliers claim affect 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. Actually, it is as misguiding as the suggestion that a taper on the cover will truly keep it from obtaining heavy.
True, the foam density and density would certainly have a bearing on the insulation buildings In the event the Usage of the foam were in compliance with the designed use of an entirely DRY atmosphere.
No matter if the supplier asserts his spa covers are made with one of the most expensive spa cover foam (stiff mobile polystyrene thermal insulation) available, stands up to damage, vapor absorption and chemical damage more than all the others they’ve examined. The truth is, R variable is NOT something they check, and RESISTING damage as well as saturation are not the same as PREVENTING it entirely.
When seeking and also comparing spa covers, ALL cases related to R-value of a cover that has foam are totally dubious. Foam Density and Foam Thickness do not have any kind of ADDED R VALUE, since the foam is not created to be used over a wet setting. The majority of spa cover dealerships repeat specifically the same numbers and also as a result hot tub owners have been educated to believe the lie. Some dealerships utilize some fancy graphs to validate their insurance claims, nevertheless the bottom line is those insurance claims could not remain in conformity to the ASTM.
R-value screening of materials is finished at room temperature, and also does not take into account moisture as well as vapor. In the spa atmosphere, there is hot water as well as excellent quantities of steamy wetness. Each which will dramatically reduce the R-value of any type of foam. A spa at 105 degrees will defeat the R-value of any kind of foam examined to make use of in a dry application.
Don’t enable the R-value of foam be thought about the measurement for spa cover high quality. Rather look 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 kind of test or actual hot tub application. (Hello, like those from SpaCap.com )
Do not be tricked by claims of high thickness as well as weight, vacuum wrapped in sheets of heat bonded polyethylene, sealed in hefty gauge marine grade vinyl, with chemical resistant scrim and sewing. It won’t protect also. It will absolutely still become saturated, distorted or damaged. It absolutely was outdated thirty years back.
SpaCap.com spa covers do not make use of 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 more reliable, the air chambers do not suck up dampness like every foam-filled cover ever made.
Why not check out SpaCap.com as well as purchase a hot tub cover for your spa today and get the future generation of hot tub covers.