Støttetaket er viktig under kantingen.

Because Norwegian normally writes compound nouns as a single word.

So here you have:

• støtte
  • tak → støttetak
• then the definite ending is added: støttetaket

This is very common in Norwegian. English often uses two words where Norwegian prefers one compound.

-et is the definite singular ending for a neuter noun.

That means:

• et støttetak = an indefinite form
• støttetaket = the definite form

So instead of adding a separate word like the, Norwegian usually puts the definiteness on the end of the noun.

In Norwegian compounds, the last part usually decides the gender.

Here, the last part is tak, which is neuter, so the whole compound is neuter too:

• et tak
• et støttetak
• støttetaket

This is a useful rule for many compound nouns.

Because viktig is one of the adjectives that does not add an extra -t in the neuter singular.

Compare:

• en stor bil / et stort hus
• but en viktig ting / et viktig poeng

So even though støttetaket is neuter, viktig stays viktig.

No. Here kantingen is a noun, not a verb.

The actual finite verb in the sentence is er.

You can think of kanting as a verbal noun, similar to English forms like edging, turning, or landing when they are used as nouns.

So:

• å kante = the verb
• kanting = the action/process as a noun
• kantingen = the definite form of that noun

Because Norwegian often uses the definite form when talking about a specific process, activity, or technique that is already understood from the context.

So:

• kanting = edging in a general sense
• kantingen = the edging / the specific edging process being discussed

In English, you might or might not use the in this kind of sentence, but in Norwegian the definite form is often the natural choice.

No. Here under means during.

So in this sentence it refers to time or process, not position.

This is very normal in Norwegian, just as English prepositions can also have more than one meaning.

No, this is a very normal sentence pattern:

• Støttetaket = subject
• er = verb
• viktig = predicate adjective
• under kantingen = prepositional phrase

So the structure is basically:

subject + verb + adjective + adverbial phrase

If you move the time phrase to the front, Norwegian follows the usual verb-second rule:

• Under kantingen er støttetaket viktig.

Yes, but the meaning changes slightly.

• Et støttetak sounds more like a support stroke/hold in a general or indefinite sense.
• Støttetaket sounds like the support stroke/hold that is already known, or the named technique as a concept.

In instructional or technical language, Norwegian often uses the definite form this way, where English might use either a definite or a more general expression.