The Johns Lyng Group Ltd (ASX: JLG) share price is plummeting on Tuesday after the company posted its half-year results and revised its full-year guidance for FY25.

Shares in the insurance company are currently fetching $2.84 apiece at the time of writing, over 25% lower from the open.

Let's take a look at what the company posted.

Johns Lyng share price sinks on H1 FY25 numbers

Here are the key points from Johns Lyng's first-half results:

• Revenues came in at $573.1 million, a 6.1% drop year over year.
• Business-as-usual (BaU) revenue increased by 9% to $534.3 million.
• Catastrophe insurance (CAT) revenue dropped sharply, falling 67.7% year over year to $38.8 million.
• Pre-tax earnings for the first half tallied $54.2 million, a 15.4% decrease compared to last year.
• Net profit of $20.8 million, down from $31 million this time last year.
• Declared a fully franked interim dividend of 2.5 cents per share, a payout of around 49% of net profit.

What else happened in 1H25?

Johns Lyng said it was "a challenging operating environment" during the first half of FY25.

Weather conditions across Australia resulted in fewer insurance claims and CAT-related work due to a reduced number of disaster claims.

Thankfully, it wasn't all doom and gloom. The company extended major contracts in the US, while expanding its trial with US insurer Brown & Brown Insurance.

The company also completed several acquisitions, including an 87.5% stake in Keystone Group, which it says is "a leading Queensland-based provider of insurance building and restoration services".

But management said project delays both in New South Wales and in the US have "impacted performance".

Consequently, management has narrowed guidance for FY25.

So what's next?

Management has reduced expectations for this year and now expects FY25 revenue to total $1.167 billion, down 5% from previous guidance of $1.228 billion.

It also projects pre-tax earnings of approximately $126.5 million, a 4.5% reduction.

The company has also conducted a strategic review and is looking to "recalibrate itsoverhead base and maintain financial discipline as conditions evolve."

What did management say?

CEO Scott Didier was positive on John Lyng's outlook despite the narrowed guidance, commenting:

JLG's strength lies in its diversified model, disciplined operations, and ability to adapt. Our expanded insurer partnerships, strategic acquisitions, and ongoing integration efforts position us for sustained growth across out strategic pillars.

JLG enters the second half with a strong foundation to navigate near-term challenges and sustain its established growth trajectory. Our engagement in recent flood and storm recovery efforts in Northern Queensland and New South Wales highlights the recurring but unpredictable nature of weather events, while our Disaster Management Australia business continues to expand its capabilities and secure new contracts, independent of CAT activity.

With a clear strategic path, JLG remains focused on delivering long-term value and growth.

Johns Lyng share price snapshot

The Johns Lyng share price is under pressure today as investors react to its H1 FY25 update and updated full-year guidance.

Over the past twelve months, the stock is down by around 60%.