The Myth of R-Value and also standard foam filled hot tub covers
R-value is a form of dimension of the ability to stand up to heat transfer for products like the fiberglass insulation in your home or possibly the shielding foam in hot tub covers The intent is that, the higher the R-value, the much better the heat storage space as well as, warm retention would certainly be the key work of any hot tub cover.
Most markets utilizing R-values are controlled by FTC requirements. Commercially sold insulation has to pass independent tests developed by American Specifications as well as Screening Techniques (ASTM) so as to be marketed or noted utilizing their R-Value.
The Misled Masses: As there is no FTC recognized independent examination for spa covers, So ANY stated R-value mentioned by a spa cover supplier is in truth an uncontrolled, unmonitored “analysis” of an offered insulation value. It is open to misrepresentation and misuse, from adding the R-value of an air space between the water as well as the bottom of the cover, spacing in between the plastic and also the cover insulation, or just coldly blowing up the fictitious number. Some hot tub dealerships specify specifically the well-known R-value of the insulation itself, however obviously that does not imply that it was checked as well as backed to use in hot tub cover applications.
The R-value of the actual foam insulation, despite the thickness, is ONLY ranked for usage in DRY building applications! Which signifies that the R score of the foam is only applicable must it occur to be applied in a wall surface, attic or flooring. Due to the fact that should it were to be utilized in a damp atmosphere, that kind of insulation would certainly fail swiftly.
Foam Thickness and also Foam Density.
These two elements that spa cover suppliers claim impact the R-value of spa covers, when as a matter of fact that R score itself has nothing to do with the foam when it is made use of in a hot tub cover. In fact, it is as misinforming as the idea that a taper on the cover will really maintain it from obtaining hefty.
Real, the foam density and also density would have a bearing on the insulation properties In the event the Use of the foam remained in conformity with the created use of a totally DRY atmosphere.
Regardless if the dealership declares his spa covers are made with one of the most costly spa cover foam (stiff cellular polystyrene thermal insulation) readily available, resists breakage, vapor absorption as well as chemical damage more than all the others they have actually tested. The truth is, R element is NOT something they evaluate, and also RESISTING breakage and saturation are not the same as AVOIDING it entirely.
When seeking and also contrasting spa covers, ALL claims related to R-value of a cover that has foam are entirely dubious. Foam Density and also Foam Density do not have any ADDED R VALUE, because the foam is not made to be used over a damp setting. The majority of spa cover dealerships repeat exactly the very same numbers as well as consequently hot tub proprietors have been educated to believe the lie. Some dealerships employ some expensive graphs to substantiate their insurance claims, however the bottom line is those insurance claims could not be in conformity to the ASTM.
R-value screening of products is finished at room temperature, as well as doesn’t take into account wetness as well as vapor. In the spa environment, there is warm water and good amounts of steamy wetness. Each which will considerably lower the R-value of any kind of foam. A spa at 105 degrees will certainly beat the R-value of any foam checked to make use of in a dry application.
Don’t allow the R-value of foam be taken into consideration the measurement for spa cover high quality. Instead search for a spa cover without any FOAM. Instead, hot tub covers that use air filled chambers as an alternative for rigid foam boards will out preform other, in any test or actual hot tub application. (Hey there, like those from SpaCap.com )
Do not be fooled by claims of high density and also weight, vacuum wrapped in sheets of heat bonded polyethylene, secured in heavy gauge marine quality plastic, with chemical resistant scrim and stitching. It won’t insulate also. It will absolutely still come to be saturated, warped or busted. It genuinely was out-of-date thirty years earlier.
SpaCap.com spa covers don’t utilize foam panels like the common rigid foam filled hot tub covers. Rather they utilize air chambers to do the insulating. Aside from being more reliable, the air chambers do not suck up wetness like every foam-filled cover ever made.
Why not check out SpaCap.com and purchase a hot tub cover for your spa today and get the next generation of hot tub covers.