אם הסדק באריח יהיה גדול יותר, נצטרך לקרוא לשיפוצניק.

That is a very common question.

In Hebrew, after אם meaning if, it is completely normal to use the future tense when the condition refers to the future:

• אם הסדק באריח יהיה גדול יותר...
• literally: If the crack in the tile will be bigger...

This sounds natural in Hebrew, even though English usually prefers the present tense in the if clause:

• If the crack gets bigger, we’ll need...

So this is one of those places where Hebrew and English structure the sentence differently.

גדול יותר literally means more big, and that is the standard Hebrew way to make a comparison.

• גדול = big
• יותר = more
• גדול יותר = bigger

So:

• הסדק יהיה גדול יותר = the crack will be bigger

Hebrew often forms comparatives this way:

• קטן יותר = smaller
• מהיר יותר = faster
• יקר יותר = more expensive

So even though English often uses -er, Hebrew usually uses יותר.

Yes. The sentence you got is correct and natural, but Hebrew also often uses a verb instead of יהיה גדול יותר.

For example:

• אם הסדק באריח יגדל, נצטרך לקרוא לשיפוצניק.

Here:

• יגדל = will grow / will get bigger

That version can sound a bit more compact or idiomatic in some contexts.
So both are good:

• יהיה גדול יותר = will be bigger
• יגדל = will get bigger

באריח means in the tile or sometimes on the tile, depending on context.

It is made from:

• ב־ = in / on / at
• אריח = tile

In this sentence, the intended meaning is the crack in the tile.

So:

• הסדק באריח = the crack in the tile

Hebrew often uses this kind of structure very directly, without needing a separate word like English of.

Hebrew often expresses this relationship by simply putting the noun and the prepositional phrase together:

• הסדק באריח = the crack in the tile

This is very natural Hebrew.
It describes which crack you mean: the one located in the tile.

You could also find other structures in Hebrew in other contexts, but here הסדק באריח is straightforward and idiomatic.

Also notice the agreement:

• סדק is masculine singular
• therefore גדול is also masculine singular

That is why it is הסדק... גדול יותר and not a feminine form.

נצטרך means we will need.

It comes from the root related to need:

• base idea: צריך = need / necessary

Here, נצטרך is:

• future tense
• first person plural
• so: we will need

That matches the sentence, because the speaker is talking about a future result:

• If the crack gets bigger, we will need...

Excellent question. לקרוא can mean different things depending on the context.

Common meanings include:

• to read
• to call
• to name

The structure tells you which meaning is intended.

Here we have:

• לקרוא לשיפוצניק

That pattern means to call / summon someone.

Compare:

• לקרוא ספר = to read a book
• לקרוא לדני = to call Dani
• לקרוא לילד בשם... = to name the child ...

So in your sentence, לקרוא definitely means to call.

Because when לקרוא means to call someone, Hebrew normally uses ל־ before the person being called.

So:

• לקרוא לשיפוצניק = to call the handyman
• literally: to call to the handyman

This is just the normal Hebrew pattern.

Compare:

• קראתי לרופא = I called the doctor
• נקרא למנהל = we’ll call the manager

So the ל is required by the verb in this meaning.

שיפוצניק means something like:

• handyman
• repairman
• renovation guy

It is a very common everyday Israeli word, but it is somewhat colloquial.
It comes from:

• שיפוץ = renovation / repair
• plus the ending ־ניק, which appears in some informal nouns

So שיפוצניק is perfectly normal in speech and informal writing, but in a more formal context you might see something more official, depending on the exact profession.

This is a very useful observation.

In unpointed Hebrew, forms with a preposition can look the same whether they are definite or not.

For example:

• באריח can represent באריח as be-arikh = in a tile
  or ba-arikh = in the tile
• לשיפוצניק can represent le-shiputsnik = to a handyman
  or la-shiputsnik = to the handyman

Usually, context tells you which one is meant.

In your sentence, the meaning shown to the learner makes it clear that the intended reading is:

• באריח = in the tile
• לשיפוצניק = to the handyman

So yes, the spelling can be ambiguous without vowel marks, and learners often have to rely on context.

A useful pronunciation guide is:

Im ha-sedek ba-arikh yihye gadol yoter, nitztarekh likro la-shiputsnik.

A few stress points:

• סדק = SE-dek
• אריח = a-RI-akh
• יהיה = yih-YE
• גדול = ga-DOL
• יותר = yo-TER
• נצטרך = nitz-ta-REKH
• לקרוא = lik-RO
• שיפוצניק = shi-PUTS-nik

The ח in אריח is the throat sound that English does not really have.

The structure is:

• אם... , ...
• if ... , then ...

More specifically:

• אם הסדק באריח יהיה גדול יותר = if the crack in the tile gets bigger
• נצטרך לקרוא לשיפוצניק = we’ll need to call the handyman

So the pattern is:

1. condition
2. result

This is a very common Hebrew conditional structure, and the future tense in both parts is normal when you are talking about a future possibility.