These chairs are the Roger model from IKEA. Removing the seats was just a matter of flipping the chairs upside down and removing two screws underneath. The seats pop right off.
I layered the new fabric right over the old stuff and stapled it to the wooden underside of the seat with a staple gun. It doesn't matter how ugly it looks, because I have yet to meet a dinner guest who examines the underside of her chair. I placed the covered seat on the chair frame and put the screws back into the same holes. A quick and easy makeover.
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