Is HELOC interest deductible for rental property under the new tax bill for 2018 and does it matter whether the HELOC was used for refinancing vs. construction?

[lancelesen]

I own 2 rental properties that DO NOT HAVE a mortgage but DO HAVE a HELOC. In one case the HELOC was refinancing, and in the other case, HELOC proceeds were used for home improvements. I have read several reports that under the new tax bill that HELOC interest for a primary home is no longer deductable on schedule A. However, I am not sure what happens to rental properties on Schedule E. Any help is much appreciated. 

[TaxGuyBill]

Any mortgage amount (personal, rental, or business) that the money was used to buy, build, or substantially improve the home is deductible (personal residence interest may be limited to $750,000 of mortgage amount).

If the money was not used to buy, build, or substantially improve the home, a rental or business can still generally deduct the interest if the money was used for rental or business purposes.