Italian Phrase
Se serve, sigilla le finestre e le porte.
Meaning
Literally, “If it is needed, seal the windows and the doors.” It is a concise instruction that tells someone to close off openings when extra protection, insulation, or security is required.
When to use
Use this phrase when giving practical advice during a storm, a cold snap, a security drill, or while preparing a room for cleaning. It works well in written instructions, safety briefings, or casual spoken advice among family members.
✦Grammar Breakdown
Seserve,sigillalefinestreeleporte.
Se + present indicative
The conjunction *se* introduces a real condition and is followed by the present indicative (serve) to mean “if it is needed/necessary”.
Serve (verb)
*Serve* is the third‑person singular of *servire* used impersonally to mean “it is needed/necessary”.
Imperative (sigilla)
*Sigilla* is the second‑person singular imperative of *sigillare* (“to seal”), used to give a direct command.
Definite article with plural nouns
Italian requires the definite article before plural nouns: *le finestre* (the windows) and *le porte* (the doors).
Conjunction e
*E* simply links the two objects, equivalent to “and”.
🗨In Conversation
Sta per arrivare una tempesta di neve.
A snowstorm is about to arrive.
Se serve, sigilla le finestre e le porte.
If needed, seal the windows and doors.
✕Common Mistakes
Se serva, sigilla le finestre e le porte.
The verb after *se* should stay in the indicative present (*serve*), not the subjunctive (*serva*).
Se serve, sigilli le finestre e le porte.
The imperative for *tu* is *sigilla*; *sigilli* is the third‑person singular present indicative.
Se serve, sigilla le finestre e porte.
Both nouns need the definite article; omitting the second *le* sounds incomplete.
↔Alternatives
Se è necessario, chiudi a chiave le finestre e le porte.
If it is necessary, lock the windows and doors.
Nel caso serva, blocca le finestre e le porte.
In case it’s needed, block the windows and doors.
Se serve, tieni chiuse le finestre e le porte.
If needed, keep the windows and doors closed.
Cultural Tip
In Italy, especially in the Alpine regions, sealing windows and doors during winter is a common habit to keep homes warm and to prevent drafts. The phrase can also appear in emergency instructions (e.g., during a gas leak) where “sigillare” implies making the openings airtight, not just closing them.