The BBQ stall is the stretch where the meat temperature barely moves because moisture is leaving the surface and cooling it. The fire did not quit and the thermometer may be fine.
Wrapping slows that evaporation. The real decision is whether the bark is ready and whether the schedule can afford to wait.
Why Brisket Stalls Even With a Steady Fire
Heat keeps entering the brisket while moisture keeps leaving it. For a while those two forces can nearly cancel each other out at the thermometer.
The number may sit still even though the cook is still working. That is why turning the fire up immediately can create a second problem instead of solving the first one.
Read the Brisket Bark Before You Wrap
Look at the bark before you look at the clock. It should feel set and the seasoning should stay in place when you touch it lightly.
If the outside is still wet or the rub wipes away then wrapping locks that unfinished surface into a damp environment. The brisket may finish sooner but the bark pays for it.
Wait When the Bark Still Needs Time
Leave the brisket unwrapped when the color is light or the surface is still soft. A steady fire and a little patience may be the only fix it needs.
Waiting makes the most sense when the meal has room to move. It is a much harder choice when a table full of people expects dinner at a specific hour.
Wrap When the Bark Is Set and Time Matters
Wrapping traps more moisture around the meat and helps the internal temperature start climbing again. University of Texas at Dallas chemist Jeremiah Gassensmith explains the same move as a way to limit evaporation.
Butcher paper breathes more than foil and usually protects more bark. Foil seals tighter and tends to move the cook faster.
Finish Brisket by Feel Instead of One Number
Temperature tells you where to start checking. Tenderness tells you when the brisket is actually ready.
Probe the flat in more than one place and avoid pockets of fat. When the probe moves through the meat with very little resistance then the brisket is ready for a controlled rest.