Is there a way to cover the pinholes made in the thermal backing when altering draperies?
By Donna from AZ
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You could sew a matching piece of fabric over the area with the pinholes; or you could try closing the holes. It depends on what the thermal backing is made of. If it's a flexible plastic or rubber, you might be able to use the tip of an iron to melt the holes closed-you'll have to be REALLY careful not to scorch the material, though. Use a low heat and work your way up to just hot enough to melt the backing enough to close the holes.
If the backing is a fabric type, you should be able to fuse iron-on mending tape over the holes if you don't want to sew another piece of fabric over the holes.
But I'm wondering about the need to cover the pinholes at all. They shouldn't show since it's a backing, and the presence of the pinholes shouldn't interfere with the thermal properties of the backing due to the small size of pinholes.
I suggest white out, thick paint or nail polish applied with a toothpick just on the pinhole. I would do it on the back side but try to match the front side. Just FYI, I have used masking tape to "pin" rubber backed curtains. I did get holes from the machine sewing, though.
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