![](https://www.mw-cp.com/wp-content/uploads/2018/08/DOW-SIL2-e1534735794451.png)
![](https://www.mw-cp.com/wp-content/uploads/2020/12/DOWSIL-DEFENDAIR-200C.jpg)
DOWSIL Defend Air 200C
A 100% silicone liquid applied Air and Weather Barrier designed to protect against air infiltration and water penetration. The vapor permeable, one component, water-based coating cures to form a flexible membrane that is impervious to water but has the ability to “breathe,” allowing water vapor to escape from inside the substrate.
Packaging
4.5 gal pails
51.5 gal drums