torch down
C1 informal separable transitive
In simple words
To burn something down using a flame or torch.
Literal meaning: To direct a burning torch downward onto something.
Meanings
1 C1 neutral
(Trade) To apply heat downward with a blowtorch to seal or bond roofing material.
"The roofer torched down the felt membrane to create a watertight seal."
Grammar: separable
2 C1 informal
To deliberately set fire to something and burn it to the ground.
"The arsonist torched down the abandoned warehouse overnight."
Grammar: separable
Usage notes
Relatively rare. Used in roofing trades to describe applying heat from a blowtorch downward to seal roofing felt or membrane. Can also be used informally to mean deliberately destroying something by fire. Not widely known outside trade contexts.
Commonly used with
roof membrane felt surface building structure
Forms
Base
torch down
I/you/we/they
3rd person
torches down
he/she/it
Past simple
torched down
yesterday
Past participle
torched down
have + pp
-ing form
torching down
continuous
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Synonyms
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