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What happens when soles age? PU consists of long polymer chains that are gradually broken down by the effects of moisture. As a result, PU loses flexibility over time and gradually becomes brittle. As the shoes get older, this can lead to signs of disintegration on the soles.
And as I mentioned before, once leather is dry rotted, there is no way to repair the material. Any leather unaffected by dry rot can still be salvaged, but anything rotten is gone forever.
Can shoes be resoled? Yes, shoes can either be resoled with full or half soles and can be replaced several times if the upper material is good.
Hydrolysis is the chemical degradation of the PU polymer and the resulting physical degradation or crumbling of the PU sole through the attack of water (usually in vapor form) accumulated over a period of several years ( even if the shoes are in the store!). This process is accelerated by heat and high humidity.
Most shoes come with a rubber outsole that grips the pavement and adds durability, and a foam midsole that absorbs shock and has a springy feel. Unfortunately, neither component lasts forever; Both will eventually break, even if the shoes have never been worn.
Shoe storage boxes aren’t doing shoe longevity any favors
It doesn’t matter if you spent $20 on a pair of shoes or $200 storing them in these boxes – before especially those made of plastic – can cause your shoes to crumble, fall apart, delaminate, warp, mar the material and frame, and deteriorate.
Shoes need fresh air or the glue and materials will dry out, causing them to crumble and fall apart, heels to crack and inner linings to peel. This is dry rot.
“It depends on whether you like the shoes,” he said, then explained his simple rule: “If the upper part of the shoe dries out or starts to tear, then it’s not worth repairing . But if the top is okay, the bottom can always be fixed.” The same is true when you’re talking about a $100 pair of shoes.
A good rubber sole is very strong and durable and lasts a thousand miles. So what is our preference? Well, we like to have the best of both worlds.
When you’re not wearing shoes, ligaments, tendons and around the ball of the foot are subjected to more stress that need support and cushioning. “Without proper shoes and arch support,” says Dr. Weissman, “People are more likely to overwork their arches, which leads to plantar fasciitis.”
A quality product like Loctite Shoe Glue works best for any shoe, as its flexible formulation bonds a variety of materials. In fact, it is the adhesive of choice for many repair shops.
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