People ask whether a personalised mug is dishwasher-safe because most of them are not. A stuck-on transfer, a laminated sticker, a heat-pressed film: these sit on top of the glaze, and the dishwasher's heat and detergent get under the edge within a few dozen cycles. Our personalised photo mug is different for a specific, physical reason, and it is worth understanding so you know what to expect.
What sublimation does
The design is printed in reverse with sublimation inks onto transfer paper. The mug is a ceramic mug with a thin polymer coating bonded over the glaze. Paper and mug go into a press at around 200°C for a few minutes. At that temperature the ink turns straight from solid to gas (that is what "sublimation" means) and the polymer coating opens up; the gas ink goes into the coating and is locked there as it cools. When the paper comes off, there is nothing on the surface. Run a fingernail across the design and you feel glaze. There is no edge, so there is nothing for a dishwasher to lift. The longer version is in how personalised gifts are made.
What actually fails on printed mugs
- Transfers and stickers applied on top of the glaze: the edge lifts, then the whole design peels. This is the mug that gave personalised mugs a bad name.
- Uncoated mugs printed with the wrong process: the design sits on the surface and scratches off with a scourer.
- Metallic and glitter finishes: not dishwasher-safe on any mug, whatever the label says.
- Very cheap coatings: a thin or uneven polymer layer can cloud or fade after years of hot cycles. It does not peel, but colours soften.
Two honest limits
First, any mug fades a little over years of dishwashers on the hottest programme with the harshest tablets; a normal programme and a standard tablet is what we test against and what the mug is made for. Second, sublimation prints colour but not white, so pale areas of a photo are the mug showing through: the print looks slightly softer than the screen from day one, not because of washing. Which photos print well covers choosing a photo for that.
Microwave
Yes for reheating a tea. The coating and ink are inert at microwave temperatures. Do not microwave a mug with any metallic decoration, which ours do not have.
Which of our products this applies to
Sublimation is how we print the mug, the aprons, the t-shirts, the tumblers and most fabric products: the design is in the material. The exceptions are honest ones: the iced coffee glass is printed on the glass surface and is hand-wash only, the bento box carries an applied name and is hand-wash for that reason, and insulated steel drinkware is hand-wash to protect the vacuum wall, not the print. The care guide lists every product.
Everything is printed to order in Cheshire, usually dispatched within one to three working days, with free UK delivery. If a mug ever fails in a dishwasher used normally, that is a fault, not wear, and we replace it; email support@larencraft.com with a photo.
Frequently asked questions
Is the personalised mug dishwasher-safe?
Yes. The design is sublimated into a polymer coating bonded to the glaze, so there is no surface layer or edge for the dishwasher to lift. Use a normal programme and a standard tablet.
Can a sublimated mug go in the microwave?
Yes. The coating and ink are inert at microwave temperatures and the mug has no metallic decoration.
Why do some personalised mugs peel?
Because their design is a transfer or sticker applied on top of the glaze. Heat and detergent get under the edge and the design lifts. A sublimated design has no edge.
