Using HELOC to fund a costly repair in my rental property.

[Pooja Watson]

Hey guys - I purchased a rental property two years ago and it recently developed a "slab leak" from a broken sewer pipe underneath the bathroom area of the home. Plumbing plus rehab service has quoted $35K end to end to get the job done which is an ENORMOUS cost given my down payment on the home was $55K. The property is insured but it will take a long time for home insurance company to provide the funds and may not even cover the full amount. 

I am considering taking a HELOC on my primary residence to fund the repair on the investment property. Is that something I can do?

What is the best way to fund this super-expensive repair without just writing a check and then, crossing fingers that the insurance company will pay up? 

Really appreciate any help you guys can give me here!! Scary stuff to deal with as a first time investor.