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Is It Safe to Steam Leather Seat Covers?

July 17, 2019 By Nadeem Muaddi

The Hog Ring - How do I Store Leather in a Small Shop
When it comes to steaming leather seat covers to get rid of wrinkles, auto trimmers are divided. Opinions range from “I steam the heck out of every cover I make” to “I would never steam any leather cover.”

In the past, I’ve had leather react very badly to steam. These days, I do use steam, but very carefully and never around perforated leather. I know some manufacturers regularly steam their seats on the product line.
What’s your expert opinion on the subject? Should we be using steam or staying away from it entirely?
— Dean McConnell of Trimworks in Leicestershire, UK

Hi Dean,

Thanks for your question.
Steaming leather seems to divide the crowd.
Some steam faithfully, while others prefer dry heat from a heat gun, and then others even shock leather with something cold after heat.
The effect of steam on leather is related to how the leather is prepared. Soft leather with plenty of fat liquors in it has a slightly higher moisture content and will typically accept a more aggressive steaming.
True automotive leather, however, has less fat liquor and is inherently dryer at its core. When you hit dry leather with steam, it seems to have a more exaggerated reaction.
If you stick to the surface of automotive leather, which is well sealed with Urethanes and pigments, you’ll generally be ok. However, if you hit the back side of a dry hide with steam, the leather will really react. The same rule applies to perforated leather.
It’s really the crust, or core, of the leather that does most of the shrinking.
There may also be some relationship with the amount of stretch that has been done to a hide in the drying process, though I can’t say for sure what the effect would be. I’ll investigate this next time I’m in the tannery, and maybe do a few tests and a follow-up.
In conclusion, there are good arguments for both techniques, and I suppose it’s really up to the individual which method gives the best results.
But like anything, a piece of scrap should always be your testbed before steaming a beautifully trimmed seat!
Thanks again for a great question.
Aaron

Aaron Laithwaite is founder and CEO of Hydes Leather. To ask him a question about automotive leather, email info@thehogring.com. Learn more about Hydes Leather at HydesLeather.com. You can also follow them on Instagram and Facebook.

Filed Under: Archive, How-to, Site Sponsors Tagged With: Ask Aaron, Auto Trim, Auto Upholstery, Car Interior, Genuine Leather, Hydes Leather

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Comments

  1. MICHAEL TODD says

    July 19, 2019 at 4:52 pm

    We are an large automotive trim shop in north Florida and have been in business for over 70 years and work with leather on a daily basis. In the past we had a policy not to steam leather. We use a Hoffman high pressure steamer with a long nosel to reach hard to get to spots. However after reading this article we tried steam on the upper surface on a Maserati dash which had shrunk and it really helped stretch the leather back into position which allowed us to anchor it with staples. (BTW the Maserati dealership pulled the dash for us) The end product turned out very well and without the steam I don’t think it would have been possible.
    Your never too old to learn something new!

  2. Bill Wall says

    July 25, 2019 at 7:51 pm

    I bought a whole hide from a shop here in town and the whole hide had like chicken wire imprints on it. I asked
    the shop here if they could fix it and they pretty much ignored me. I tired a whole bunch of different tricks
    that I read about online and finally bought a steamer. I steamed the backside (it worked better than doing the front) and it completely removed all of the imprints. I know the shop screwed me when I saw my hide
    for the first time. Will never use them and will suggest no one use them.

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