Hot Tub Covers and the R-Value

The Myth of R-Value as well as standard foam filled hot tub covers

R-value is a kind of dimension of the capability to stand up to heat transfer for products like the fiberglass insulation in your home or maybe the shielding foam in hot tub covers The intent is that, the greater the R-value, the better the heat storage and, warmth retention would certainly be the key job of any kind of hot tub cover.

Most markets using R-values are controlled by FTC criteria. Readily marketed insulation should pass independent examinations created by American Specifications as well as Screening Methods (ASTM) so regarding be promoted or marked using their R-Value.

The Misled Masses: As there is no FTC identified independent test for spa covers, So ANY specified R-value specified by a spa cover dealer remains in fact an uncontrolled, unmonitored “analysis” of a given insulation worth. It is open to misstatement as well as abuse, from adding the R-value of an air space in between the water as well as the bottom of the cover, spacing in between the vinyl and also the cover insulation, or merely blatantly inflating the make believe number. Some hot tub suppliers state solely the recognized R-value of the insulation itself, yet of course that does not mean that it was checked and also endorsed to utilize in hot tub cover applications.

The R-value of the real foam insulation, despite the density, is ONLY ranked for use in COMPLETELY DRY structure applications! Which represents that the R ranking of the foam is just suitable should it occur to be applied in a wall, attic room or floor. Because must it were to be used in a damp atmosphere, that type of insulation would certainly fail swiftly.

Foam Density and also Foam Thickness.

These 2 elements that spa cover suppliers assert impact the R-value of spa covers, when actually that R score itself has nothing to do with the foam when it is used in a hot tub cover. Really, it is as misinforming as the suggestion that a taper on the cover will really maintain it from obtaining hefty.

Real, the foam thickness as well as thickness would have a bearing on the insulation residential or commercial properties In the event the Use of the foam were in conformity with the made use of a completely DRY setting.

Regardless if the dealer claims his spa covers are made with one of the most costly spa cover foam (inflexible cellular polystyrene thermal insulation) available, stands up to breakage, vapor absorption as well as chemical damages greater than all the others they’ve evaluated. The reality is, R element is NOT something they evaluate, and also RESISTING damage and saturation are not the same as PREVENTING it entirely.

When trying to find and contrasting spa covers, ALL claims related to R-value of a cover that has foam are entirely unverified. Foam Thickness and also Foam Density do not have any kind of ADDED R WORTH, because the foam is not made to be used over a wet atmosphere. Most spa cover suppliers repeat precisely the same numbers and also consequently hot tub owners have actually been trained to believe the lie. Some dealerships employ some fancy graphs to corroborate their insurance claims, nonetheless the main point is those cases can not be in accordance to the ASTM.

Misconception Damaged!

R-value testing of products is completed at room temperature, and doesn’t take into account moisture as well as vapor. In the spa setting, there is hot water and excellent quantities of steamy moisture. Each which will considerably decrease the R-value of any kind of foam. A spa at 105 levels will certainly beat the R-value of any kind of foam examined to use in a dry application.

Do not enable the R-value of foam be thought about the measurement for spa cover quality. Rather search for a spa cover with NO FOAM. Instead, hot tub covers that use air filled chambers as an alternative for rigid foam boards will out preform other, in any type of test or actual hot tub application. (Hey there, like those from )

Don’t be deceived by claims of high thickness as well as weight, vacuum wrapped in sheets of heat bonded polyethylene, sealed in hefty gauge marine grade plastic, with chemical resistant scrim and also sewing. It will not protect also. It will definitely still become saturated, warped or damaged. It genuinely was out-of-date thirty years back. spa covers don’t use foam panels like the typical rigid foam filled hot tub covers. Rather they make use of air chambers to do the insulating. Apart from being a lot more effective, the air chambers don’t suck up moisture like every foam-filled cover ever made.

Why not see and also purchase a hot tub cover for your spa today and obtain the next generation of hot tub covers.

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