Warning! This article contains spoilers for Silo season 2.
The heat tape not only proves to be Juliette’s biggest savior inSiloseason 1’s finale but also holds immense significance in the show’s overarching story in season 2. InSiloseason 1’s endingmoments, Juliette accepts her fate and steps out of Silo 18 after being ordered to. However, to everyone’s surprise, she not only breaks the cleaning rule but also survives far longer than all previous citizens who were sent out. Juliette’s survival changes how Silo 18’s citizens perceive the outside world because they always believed they would die moments after stepping out.
Siloseason 2’s episode 2walks through the aftermath of season 1’s ending, highlighting how Juliette’s departure gradually sparks a rebellion in Silo 18. While the people of Silo 18 cannot help but wonder whether Juliette is alive, Bernard suspects her survival could have something to do with the heat tape used on her suit. With this, the heat tape becomes an essential narrative device inSiloseason 2’s early episodesafter season 1’s ending briefly explains how it helped Juliette survive.

Heat Tape Allowed Juliette To Go Outside In Silo Season 1’s Ending
The Heat Tape Insulates Her Suit For A Prolonged Period
InSiloseason 1’s early episodes, Bernard accuses Juliette of stealing a certain tape after she becomes the Sheriff. Juliette, who did steal the tape, claims the tape she stole from the IT was of inferior quality and had no use in the Mechanical because it wore off quite easily.Siloseason 1’s ending confirms that the tape Juliette had stolen was being used for sealing the suits of the people leaving the Silo.The IT intentionally used low-grade tape to insulate the suits to ensure it eventually erodedand exposed the ones departing to the outside world’s toxic environment.
Silo’s Heat Tape Explained & How It Foreshadowed Juliette’s Season 1 Fate
The heat tape becomes a primary device that determines Juliette’s fate in Silo’s ending, but its function was foreshadowed long before the finale.
Fortunately, for Juliette, when the workers from the Supply help her wear her suit, they intentionally use high-grade tape that does not wear out too easily. Therefore, when she steps out of Silo 18, her suit remains intact and well-insulated, preventing her from getting exposed to the outside world’s toxic environment. Owing to this, even though every cleaner before Juliette died moments after stepping out of Silo 18, Juliette manages to survive long enough to find another neighboring Silo and enter it before it is too late.

How Juliette Got The Heat Tape - Walker’s Role Explained
Walker Realized What The IT Was Doing And Saved Juliette
Martha Walker never leaves her workshop and lives in the comfort of her familiar surroundings for years, if not decades. However, towardsSiloseason 1’s ending, she connects the dots and realizes only she can save Juliette from her imminent fate. Therefore, she faces her fears and steps out of her workshop to visit Carla from the Supply. She tells Carla that she suspects the IT makes them use inferior quality tape on the suits andconvinces her to send a stronger tape for insulating Juliette’s suit.
…Martha Walker manages to save Juliette by ensuring that her suit holds up against the outside world’s harsh environment.

Carla agrees to help, and, as a result, the people from the Supply use superior-grade heat tape to seal the edges of Juliette’s suit. With this, Martha Walker manages to save Juliette by ensuring that her suit holds up against the outside world’s harsh environment. InSiloseason 2’s episode 2, both Walker and Carla face the consequences of their actions when Bernard realizes what they might have done. The two women are imprisoned in the second installment’s early episodes, leading them to worry if they, too, will be sent out to clean.
Why Bernard Mentions Tape During His Speech To The Silo In Season 2
Bernard Lies About The Heat Tape To Silo 18’s Citizens
After Juliette’s exit, Bernard fears that a rebellion could erupt in Silo 18. He initially struggles to figure out how he can extinguish the rebellion before it is too late. He even gets Martha and Carla arrested, believing that punishing them would serve as an effective threat to other citizens. However, he later puts his ability to manipulate the masses on full display byclaiming that Juliette only survived longer than previous cleaners because the IT intentionally sealed her suit with high-grade tape.
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Instead of antagonizing Juliette, he gives his people what they want to hear and calls her a hero. He says she willingly put her life on the line by allowing the IT to use a new kind of tape on her suit. To end his speech to Silo 18’s citizens, he also claims that Juliette’s sacrifice has played a crucial role in helping them figure out a way to successfully leave their silo someday. Although he manages to sell his lie about the heat tape to many citizens, he only temporarily suppresses the brewing rebellion inSiloseason 2.
Silo
In a dystopian future, men and women reside in a vast underground silo governed by strict regulations, believed to shield them from the hazardous world above. The series delves into the complex social order within the silo and the mysteries surrounding their subterranean existence.