Question and answers on Stucco and Plastering
fibers for reinforcing stucco.
Can you provide more details on reinforcing fibers for
MYTHBUSTER: These fibers aren't fiberglass at all, but
poly propylene, the same
plastic bread bags are made of.
There are other products, such as EIFS reinforcing mesh,
and mesh drywall tape,
that say fiberglass on the label, but aren't fiberglass,
Fiberglass is made of glass fibers, which is a hazardous
material, and I don't
think it is even made any more.
Fibers can be found where materials for concrete are sold.
They come in a one
pound bag. We use a bag of fibers for 6 bags of Portland
The important thing is fibers won't mix well in a mortar
mixer, they clump up.
We dry mix the mortar in a mortar box and sprinkle the
fibers on top.
After adding water and mixing with a hoe the fibers
disperse nicely through the mix.