From Colorado Freeride Systems
Jackets
We recommend never washing your laminate jacket. Yes, that's right. Although, our fabric manufacturers do not supply this information to us, we have found that the saturating of any premium fragile high grade water proof breathable (wpb) membrane with water and detergent, will destruct its performance qualities and most likely result in a delimitation of the fabric face/ membrane and interior layers. That may occur with one wash or take several to achieve. It depends on type of detergent, type of machine and wash cycles. Saturation will occur either due to natural deterioration of DWR and or through needle holes in jacket construction. Regular outdoor use does not lead to delamination unless DWR has been worn away and or use of rubbing from things such as back pack shoulder straps, waist and chest belts occurs.
Furthermore retreating DWR repellent with products such as Nikwax, and other similar do not produce OEM level results.
If you absolutely must wash. follow the care guidelines found on Tek Wash bottles. However, we have seen very negative results from washing fragile wpb membranes.
I have a laminate jacket (gore-tex) that I must have washed 20 times. Still works great! YMMV I guess.