i got premium waterproof silicone from walmart. its a walmart brand and is called silicone 2 clear. for window door attic and basement. it says 100% silicone on the bottle. it says 100% silicone is 100% water proof.
here it is
http://www.walmart.com/ip/GE-White-...HPStwNw&sourceid=29033438651707308062&veh=aff
here it is
http://www.walmart.com/ip/GE-White-...HPStwNw&sourceid=29033438651707308062&veh=aff