Looking for Feedback on Condition of Insulated Cover I Just Received

303Michael

Member
Jul 8, 2019
20
Denver, CO
I just took delivery of this spa cover. Based on at least one other thread I read when doing pre-purchase research, I decided to open up and inspect the vapor barrier, particularly since I paid for a double wrap. On one of the cores, it looks like the vapor barrier split after being sealed and they just closed it up with masking tape.

To me, this just doesn't seem up to quality. Any vapor barrier is only as good as the seal on the closure and I'm not convinced the masking tape either provide an equivalent seal or will hold up long term.

I just wanted to get some feedback here to make sure my expectations aren't way out of line.

PXL_20211008_153838932.jpg
PXL_20211008_153900575.jpgPXL_20211008_153851959.jpg
 

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
28,518
Northern NJ
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Pentair Intellichlor IC-60
Do you see the double wrap?

Call and complain and see what they offer.
 

Mdragger88

Bronze Supporter
Jun 1, 2018
2,970
Hernando, Ms
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I would definitely contact them - only u can decide what remedy you wish to accept - replacement or discount etc.
Hopefully they have good customer service.
 
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RDspaguy

In The Industry
Mar 21, 2020
1,382
Cabool, Mo
It is common to seal the plastic sheet with tape, so repairing it with tape should not be an issues as long as it has a good seal. Pretty normal from what I've seen.
 

JamesW

TFP Expert
Mar 2, 2011
27,681
The water is a vapor, which can penetrate through materials quite easily unless they are thoroughly waterproof.

Packing tape is not a waterproof barrier.

In my opinion, it should be an unbroken waterproof seal, not a rip patched with Scotch tape.
 

RDspaguy

In The Industry
Mar 21, 2020
1,382
Cabool, Mo
I hear you @JamesW , it sounds a bit cheesy, but that doesn't change the fact that every cover I have cut up for the trash has taped seams. You may not feel that it is sufficient, but it is standard cover manufacturers practice. Pull the insert out of yours and you will find it taped as well.
I don't build them, just telling you what I've seen in the field.
 
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JamesW

TFP Expert
Mar 2, 2011
27,681
every cover I have cut up for the trash has taped seams.
And the reason that the cover failed is usually water intrusion causing the cover to soak up water like a sponge.

So, it makes sense that the covers that fail all have taped seams.
 

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JamesW

TFP Expert
Mar 2, 2011
27,681
Your sample has a selection bias, which means that the sample is not a fair representation of the general population.

The bias is a failure bias, which is the opposite of a survivorship bias.

Since you are only checking covers that failed, the sample is automatically biased.

To get a proper sample, you would need a statistically significant sample size and the sample would have to include random covers including covers that failed and covers that have not failed to be able to determine if the tape results in a statistically significant difference between taped or not taped.

 
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JoyfulNoise

TFP Expert
Platinum Supporter
May 23, 2015
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Wow ... you'd think these manufacturers never heard of heat sealing plastic. There are all types of heat sealing applicators from bench top models to floor size sealers as well as hand held ones that you can zip along a piece of thermoplastic to create a freeform seal. In the electronics industry, we would routinely send out custom fabricated parts to various vendors for test and approval and we always sealed our devices using anti-static thermoplastic bags that could be purged with dry gas or evacuated and sealed. The equipment is fairly cheap ...
 

JamesW

TFP Expert
Mar 2, 2011
27,681
It seems like they use heat sealed plastic.

The problem seems to be that the plastic gets ripped for some reason and then the rip is just patched with packing tape instead of rewrapping it with a proper heat sealed plastic.
 

303Michael

Member
Jul 8, 2019
20
Denver, CO
It seems like they use heat sealed plastic.

The problem seems to be that the plastic gets ripped for some reason and then the rip is just patched with packing tape instead of rewrapping it with a proper heat sealed plastic.
This is correct. It looks like it was heat-sealed too tight and it just pulled apart after the sealer arm lifted while the seal was hot. I'd have to double-check the other half but I don't believe it had tape all the way across the seam. The seal was what I expected so I didn't take a photo.

I'll respectfully disagree with packing tape making an acceptable seal. It may not be uncommon but It's definitely not an appropriate method to create a vapor barrier. If the tape was sufficient then I can't see why they would bother trying to heat seal it.
 
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RDspaguy

In The Industry
Mar 21, 2020
1,382
Cabool, Mo
@JamesW You make a good point. As a repairman I never see the stuff that is working, just the stuff that isn't. It applies to more than just covers, and perhaps explains my negative views regarding certain equipment. Nobody ever calls to say everything is working great, that's for certain!