Medium Large Transport
Flight Crew Air Transport Pilot (ATP)
Aircraft Equipment Problem Less Severe; Inflight Event / Encounter Other / Unknown
General None Reported / Taken
Procedure
In an effort to comply with [FAA mandate]; we had type IV fluid applied to the upper surface of the fuselage.  The fluid obscured the windshield as it flowed forward off the aircraft but cleared with wipers.  All was normal until approximately 10-15KIAS prior to V1 speed; the type IV fluid that pooled below the windshield began to flow off the aircraft up over the windscreen obscuring our view of the runway.  Visibility for the crew dropped to zero for the remainder of the takeoff roll and climb out.  An abort was impossible and the initial climb-out; surrounded by high terrain; was an unacceptable safety risk.  The windscreen remained opaque for the first 1-2 minutes of flight.This procedure creates an unacceptable safety risk to our crews; passengers; and aircraft.  My recommendation is to immediately discontinue the procedure until a solution and mitigation strategy can be found.  As PIC of the flight; the degradation of safety is too great and I cannot comply with the procedure as written.
Reporter stated this was the first takeoff with the new procedure; thus the first time they had to deal with Type IV fluid flowing over the windshield. Reporter also stated now that they know what happens they will be ready with the windshield wipers.
After about 100 KIAS the Type IV fluid spooled from under the windshield and completely covered the windshield proving ZERO visibility. We were a few knots below V1 on a fairly narrow runway in ASE and we were unable to see out of the airplane for a safe takeoff. I kept my feet on the rudders to as close as I could imagine was putting us down the centerline and lifted off. This all took place in a matter of seconds; but the timing could not have been worse. If we had to do an abort; there would be zero visibility out of the window and there would have been a very slim chance of a successful abort. This is extremely unsafe and we almost had an aircraft accident because of it. Type IV is very thick and heavy and is probably why it took so long for the fluid to lift and cover the windshield at such a critical flight phase. We did not have much time to react and we were both very surprised by what happened.
Airline flight crew reported their forward visibility was obscured on takeoff roll and initial climb when Type IV fluid flowed over the windscreen as their speed increased.