Translation guide
The material or process of sealing gaps and joints to make them watertight or airtight. In Japanese, the word depends on whether you mean the material itself, the action, or a specific context like construction vs. DIY.
Referring to the substance used to fill gaps, such as silicone or putty.
The most common term for caulking material. 'コーキング' alone can also be used, but adding '剤' makes it clear you mean the sealant.
This caulking material is highly waterproof.
Often used in construction contexts. 'シーリング' refers to sealing, and '材' means material.
Please fill with caulking material.
A loanword from English 'caulk', used in some DIY contexts, but less common than コーキング剤.
Go buy some caulk.
The process of applying caulking material.
The standard way to say 'to caulk'. コーキング is a noun, so you use する to make it a verb.
I caulked the bathroom.
Used more in professional or construction settings.
We need to caulk the window frame.
Literally 'fill the joints'. A more descriptive phrase, often used when talking about filling gaps with any material.
I filled the tile joints (with caulk/grout).
The tool used to apply caulk.
The standard term for a caulking gun.
Please use the caulking gun.
Both are used, but コーキング is more common in everyday DIY contexts, while シーリング is often preferred in professional construction. The material itself can be called コーキング剤 or シーリング材.
I bought caulking material at the home center.
This sealant is highly durable.