Here is my email exchange with the Bilco website. Seems like there is no easy answer. The realistic answer is to divert the water before it lands on the doors and reinstall the doors.
On 9/8/10 9:26 AM, "Pamela Greulich" wrote:
> The Bilco basement door is designed to shed water in normal conditions and
> installed according to the installation instructions. We also state, if
> there are no gutters on the house, a rain diverter must be installed to
> prevent roof water from flowing directly onto the door.
> Thanks for your inquiry.
> -----Original Message-----
> From: Wallace Stuart [mailto:email@example.com]
> Sent: Tuesday, September 07, 2010 9:09 PM
> To: firstname.lastname@example.org
> Subject: Residential Products Inquiry
> Ladies and gentlemen:
> My cellar gets water in it during rain storms, because the Bilco basement
> "Classic Series Steel Sided Doors" are leaky. Rain falls from a sloped roof
> of my house on to the bulkhead doors. Does any ....