What unintentional tort would be used by a lawyer if a company was specifically instructed to leave windows open after doing a job, and they didnt which caused an explosion in the house? The couple whose house was getting their floor refurbished specifically asked the company to leave the windows open for ventilation once they were done and to leave the keys back with the next door neighbor. they failed to do so and it resulted in a major explosion inside the house. The sealant of the product they used also highly advised ventilation once it was used. The flooring company was afraid to leave it open as previously they saw on the news that there tend to be thieves and they could be held liable.

• What unintentional tort would most likely be the basis of this lawsuit?
• What has to be established in order to be successful?
• What defence could either side use?