The Myth of R-Value and conventional foam filled hot tub covers
R-value is a form of measurement of the capacity to resist warmth transfer for materials like the fiberglass insulation in your house or perhaps the protecting foam in hot tub covers The intent is that, the better the R-value, the much better the heat storage and, heat retention would be the main work of any type of hot tub cover.
Many markets utilizing R-values are regulated by FTC standards. Readily marketed insulation must pass independent tests developed by American Specifications and also Testing Methods (ASTM) so regarding be marketed or noted utilizing their R-Value.
The Misled Masses: As there is no FTC acknowledged independent examination for spa covers, So ANY stated R-value specified by a spa cover supplier is in reality an unregulated, unmonitored “analysis” of a given insulation worth. It is open to misstatement and misuse, from including the R-value of an air space between the water and also all-time low of the cover, spacing in between the plastic as well as the cover insulation, or just coldly blowing up the fictitious number. Some hot tub dealers specify exclusively the well-known R-value of the insulation itself, yet of course that doesn’t suggest that it was tested as well as recommended to use 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 rating of the foam is only appropriate should it occur to be used in a wall surface, attic room or flooring. Due to the fact that needs to it were to be used in a wet environment, that sort of insulation would certainly fail rapidly.
Foam Density and Foam Thickness.
These 2 factors that spa cover suppliers assert influence the R-value of spa covers, when in fact that R score itself has nothing to do with the foam when it is utilized in a hot tub cover. Actually, it is as misguiding as the concept that a taper on the cover will truly keep it from getting heavy.
Real, the foam thickness and also thickness would certainly have a bearing on the insulation properties In case the Use of the foam remained in conformity with the created use a totally DRY setting.
No matter if the dealership declares his spa covers are made with one of the most pricey spa cover foam (inflexible cellular polystyrene thermal insulation) readily available, stands up to breakage, vapor absorption as well as chemical damages greater than all the others they’ve examined. The truth is, R element is NOT something they check, and RESISTING damage and saturation are not the like PREVENTING it entirely.
When trying to find as well as comparing spa covers, ALL cases related to R-value of a cover that has foam are completely unsubstantiated. Foam Density and also Foam Density do not have any type of ADDED R WORTH, considering that the foam is not designed to be used over a damp setting. A lot of spa cover dealers repeat precisely the same numbers as well as subsequently hot tub owners have actually been educated to think the lie. Some dealers employ some elegant charts to substantiate their cases, nevertheless the bottom line is those cases could not remain in accordance to the ASTM.
R-value testing of materials is completed at room temperature, as well as doesn’t consider dampness and also vapor. In the spa setting, there is hot water and good quantities of steamy dampness. Each which will significantly minimize the R-value of any type of foam. A spa at 105 levels will beat the R-value of any kind of foam examined to utilize in a dry application.
Do not enable the R-value of foam be taken into consideration the measurement for spa cover quality. Instead search 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 other, in any type of examination or actual hot tub application. (Hey there, like those from SpaCap.com )
Do not be mislead by claims of high thickness and also weight, vacuum wrapped in sheets of heat bonded polyethylene, sealed in heavy gauge marine grade plastic, with chemical resistant scrim and sewing. It will not shield as well. It will absolutely still end up being saturated, deformed or broken. It truly 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. Rather they utilize air chambers to do the insulating. Apart from being more efficient, the air chambers do not suck up wetness like every foam-filled cover ever made.
Why not see SpaCap.com and also get a hot tub cover for your spa today and obtain the next generation of hot tub covers.