"The times I have had to say to people a sprinkler system will not go off unless there is a fire at 68C.
"It won't go off if you burn your toast. It won't go off if the pizza's burning. It will only go off when there is a fire and when it goes off that saves those lives.
"It saves the lives of the people, it saves the lives of firefighters having to go into burning buildings and it just makes sense to get on and do it now."
The building industry had its chance to fit sprinklers in all new homes, but it was now time to legislate "so we can make people's lives in Wales a lot safer",
"Not many of the votes we pass here save lives - that one did."
However, Vale of Clwyd AM Ann Jones, who steered through the sprinkler legislation in the Senedd, said Mr Jones was "obsessed with denigrating fire sprinklers".
"I am shocked and appalled that David Jones thinks that saving lives is bizarre. The installation of sprinklers is designed to do one thing: save lives."He has repeatedly spread disinformation about the law and scrutinised the plans and said there was no evidence that the costs would have a significant impact on the housing market.It would be wrong to claim that the above legislation would have prevented yesterdays tragedy, but it shows our much derided Assembly can be a pioneer in so many things if it has not only the power but the will o do so,
"Too many lives are lost and homes devastated as a result of house fires."
A Welsh government source accused Mr Jones of spending his week at the Tory conference "talking down Wales".
"Instead, he should be explaining why he has become a roadblock to boosting the construction sector and growing the Welsh economy, by adamantly opposing the devolution of stamp duty to Wales," the source said.
"It's now clear David Jones is now running out of allies. He has put himself at odds with [London Mayor] Boris Johnson, who has called for to stamp duty to be devolved to London - for precisely the same reasons we want it devolved to Wales.
"He repeatedly talks of more onerous regulations in Wales than in England - without producing any evidence to back up this claim.
"On sprinklers, he is also at odds with his own party colleagues in the Welsh assembly, who voted for the legislation.
"He is also contradicting the views of his cabinet colleague, [Communities Secretary] Eric Pickles, who believes that 'domestic sprinkler systems can save lives and that is a price worth paying'. We agree."