The respondents sold a house with a thatch roof to the appellants under a contract containing a voetstoots clause. Prior to the sale, the roof leaked and the respondents undertook certain repairs. An addendum to the sale agreement recorded that the seller would transfer a guarantee on the thatch roof to the purchasers. In truth, the guarantee had already expired and the respondents knew this. After transfer, the roof continued to leak. Expert evidence showed that the roof had latent structural defects, including inadequate support and design, and an insufficient pitch, which rendered it unfit and required complete reconstruction. The respondents were aware that the repairs had not permanently remedied at least one of the causes of the leaking roof but failed to disclose this and misrepresented the existence of a valid guarantee.