Easy Knob-and-Tube Insulation Fix

The insulation on knob-and-tube wiring gets brittle with age. When you’re working with it, the insulation may just crumble in your hands.

zip tie knob and tube insulation fix

Safety First

The insulation on knob-and-tube wiring gets brittle with age. When you’re working with it, the insulation may just crumble in your hands. You can easily re-insulate a section using a length of the plastic jacket from a piece of nonmetallic sheathed cable (often referred to as Romex).

Every homeowner should have a stash of these tiny, versatile straps on hand. Zip ties can help you conquer clutter, work hands-free and even see in the dark. Check out 13 Zip Tie Hacks That Make DIYing a Cinch.

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Brad Holden
Brad Holden, an associate editor at The Family Handyman, has been building cabinets and furniture for 30 years. In that time, he has absorbed so many slivers and ingested so much sawdust that he's practically made of wood.