A kit of parts for flood-proofing a door, including: a resilient seal member including a main body and a head; a non-resilient mounting member for securing the seal member to a door frame, the mounting member defining a support surface configured to receive the seal member and defining a mounting surface locatable against the door frame, wherein a channel is formed in the support surface, the head of the seal member insertable into the channel to mate the seal member and the mounting member.