How Wool diaper covers work - Mothering Forums

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#1 of 9 Old 10-19-2013, 02:32 AM - Thread Starter
 
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So many people ask this, so I thought I'd post this explanation on here as well. I know most people don't even consider wool covers as an option, because they don't understand or believe that they can possible work, but they really do. They are particularly good for addressing the overnight problem, as they allow the nappy underneath to dry a bit between wees, thus increasing total overnight  capacity considerably. What's more, you don't get those horrid red marks which ealsticated PUL can leave on your baby's skin. Wool is just gorgeously soft, gentle and also cooler for your baby, so really comfy for him. 

 

Here's how it works.

 

Wool is absorbent, but absorbs very slowly. Because of the body heat of your baby, and the warmth of the wool, it also evaporates, and this happens at the same rate as it absorbs. When evaporation takes place, the wet is turned into gasses. Most people think this will be steam, but in fact it's not. Steam is created when evaporated water condenses again, and this happens when the air containing the evaporated gasses, hits something cold, and there is enough wet in it to saturate the air. (This is called the dew point)

 

If you have a PUL wrap, the inside of the PUL will not let the wet get any further, so the amount of evaporated gasses builds up, and also because PUL has a cold feel, the saturated air will cause wet to condense again, and get absorbed back into the nappy. This doesn't happen with wool, because it is warm, and can breath, so "dew point" is never reached, and  the gasses continue one their journey, unrestricted by the wool , baby clothes, bedding etc. It will finally condense, possiby when it hits the window of your baby's room in winter, but basically the amount of wet in the air never gets high enough to cause a dew point.

You do need a good absorbent nappy underneath - wool isn't a dam, so the nappy needs to absorb initially, but once that has happened, the wool will start to do its work.

You need to keep the cover lanolised, as this will keep it waterproof, and also clean the wool without the need of washing very frequently, but lanolising is now a very simple procedure, if you use the new soluble lanolin. Wool covers only need washing if they start to smell a bit after they have aired,  or when they start to get grubby looking. (You can spot wash small stains) Lanolin is anti-bacterial, so just hanging to air will sanitise your cover. Re-treating with lanolin, which probably needs doing every couple of months or so,   is no more difficult than adding fabric softener to the final rinse, if you use soluble lanolin. Just add some soluble lanolin to warm water, and leave the cover to soak overnight. Then lay flat to dry, and you cover is all ready and re-conditioned to do another couple of months.

And they are so cute looking too!

     

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#2 of 9 Old 10-20-2013, 10:16 AM
 
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Lots of good info! we love our wool.

I made mine from wool sweaters found at thrift stores, and they work great for us.

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#3 of 9 Old 10-22-2013, 08:23 PM
 
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WOW.  Great info on PUL vs wool.  I live in Florida and have some wool I want to use for overnights.  I am due in June and my sister thinks I am crazy.  This info will help a great deal!

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#4 of 9 Old 10-29-2013, 01:42 AM - Thread Starter
 
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Make sure you use the right sort of wool if you make your own. It needs to be wool which is NOT treated for machine washing, as it needs to absorb lanolin. Machine washable wool not only has all the natural lanolin stripped out of it, but also it won't absorb lanolin. 

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#5 of 9 Old 11-05-2013, 05:18 PM
 
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I've used washable wool thrift store sweaters for all of mine and they work great - as well or better than the few commercially made wool covers I've tried.


Work at home, homesteading mom sharing child care 50/50 with my wonderful WAH DH. DD1 born Jan. 2010.   March '12.   DD2 & DD3 (twins) born Feb. 2013
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#6 of 9 Old 11-05-2013, 09:23 PM
 
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Quote:
Originally Posted by Brambleberry View Post
 

I've used washable wool thrift store sweaters for all of mine and they work great - as well or better than the few commercially made wool covers I've tried.

me too!! :thumb 

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#7 of 9 Old 11-06-2013, 07:13 AM - Thread Starter
 
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Yes, felted upcycled wool is great, and I think hand knitted ones always work better than the commercially made ones. Lots of WAHMS make them, and they are far superior to the machine knitted commercial ones

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#8 of 9 Old 11-19-2013, 11:53 AM
 
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So, what do you do if u get upcycled sweater longies, off eBay, and they are itchy wool??? Is there anything that can be done to make them soft or at least not itchy?!?

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#9 of 9 Old 11-20-2013, 01:56 PM - Thread Starter
 
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Just lanolizing makes wool a lot softer. But if that doesn't make them soft enough I don't think there's much you can do about it. I think if wool is itchy quality, it's itchy quality. Otherwise, if you knit or know someone who does, hand knit or crochet your own, using soft quality wool or alpaca.

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