Working On Ductwork Safely
There's a lot of controversy in the Industry over the use of fiberglass, and we've all
heard that California and possibly one or two other states have banned fiberglass as
a carcinogen.
VERY FIRST THING to do is buy an industrial strength respirator to wear when
you're working with fiberglass.

You'll also want a good pair of work gloves to protect your hands from the sharp
edges of metal ducts, and from glass fibers.

Safety glasses are a must, and we were able to locate a wraparound pair with inset
lenses, which is good if you need glasses for close work.

Wear long sleeves and pants; If you're working with fiberglass, a friend advises
applying talc liberally to your arms before donning your shirt (he also advises first
showering in cold water, and then raising the water temperature to normal when you
bathe after working with fiberglass).

If you're working in an attic, you'll need to be very careful not to step on the ceiling
beneath; we put down 2x6's in some places and plywood in others to walk on.

A good work light is another basic necessity, and not just to see your work:
There are a lot of hazards in unfinished spaces,
and you need to see them to avoid injuring yourself.
Are there nails sticking out that might cut you?
Is there exposed wiring that might shock you or trip you? Etc.

A hard hat will protect your head from the roofing nails protruding through the
sheathing, if you're working in an area beneath a low roof.

It gets hot in an attic during the day; we started at or before sunrise, working a
couple of hours a day.

This is basic stuff for accomplished DIY'ers, but a reminder can't hurt.