Experts believe the exterior cladding, which contained insulation, helped spread the flames quickly along the outside of the tower in the Wednesday morning blaze that has killed at least 58 people.
He said the government is carrying out an "urgent inspection" of other tower blocks in Britain to assess safety.
Hundreds of angry residents stormed council offices on June 16 as they demanded support, housing and answers over the Grenfell Tower disaster amid accusations of "mass murder".
Cundy made a plea to anyone who escaped the tower but hasn't checked in with police to come forward.
The horrifying fire in West London on Wednesday was bound to have an impact on a country already shaken by three terrorist attacks in three months, a political crisis that has followed the Brexit vote, and the recent general election that not only provided no clear victor but deprived Prime Minister Theresa May's Conservative Party of its political mandate.
Greg Hands told Sky News that "my understanding is that the cladding that was reported was not in accordance with United Kingdom building regulations".
'And in some ways, that is actually what we need, because we are now in a situation where we probably have enough clothing, food and so on, but cash, money, really does help.
The London Fire Brigade has warned it could be years before it releases an investigation report into the incident.
The cause of Wednesday's blaze is still under investigation, but anger has mounted in the community amid reports that exterior paneling used in an extensive renovation completed previous year may have spread the flames.
According to reports, fire officials were called to Grenfell Tower to combat the blaze at around 1 a.m. local time on Wednesday.
Sadiq Khan has joined a congregation at a church service near Grenfell Tower.
Areas near the blaze are covered in posters showing missing persons.
United States man who barricaded self is suspect in triple slaying
Brinkman is charged in the deaths of a married couple in Lake Township - Rogell Eugene John, 71, and Roberta Ray John, 64. Police say a family friend found the three Sunday night at a home in North Royalton, south of Cleveland.
He says it may be necessary for numerous outmoded tower blocks built in the 1970s to be demolished because of safety concerns.
Mr Hammond said the public inquiry set up by the Government following the tragedy would also examine if rules had been broken.
David Lammy said Sunday he is anxious that documents will be quietly deleted and disposed of as police begin a search for evidence.
Lammy said that "the prime minister needs to act immediately to ensure that all evidence is protected so that everyone culpable for what happened at Grenfell Tower is held to account and feels the full force of the law". In a letter to May, he listed a litany of residents' concerns, including a lack of information about missing relatives, the chaotic response of the local council and worries over safety in other tower blocks.
He said: "Within the community, trust in the authorities is falling through the floor and a suspicion of a cover-up is rising".
The investigation will include areas such as the construction, renovation and maintenance of the building and fire safety procedures, he said. Attention has focused on materials used during the renovation process completed past year.
It will coincide with the State Opening of Parliament and Queen's speech - which takes place at 11.30am.
"I thought they took him outside with me".
He told ITV's Peston on Sunday: "Occupy it, compulsory purchase it, requisition it - there's a lot of things you can do".
"There are 58 people who we have been told were in Grenfell Tower on the night that are missing and therefore, sadly, I have to assume that they are dead".
Mohammad Alhajali, 23, on Saturday became the first victim officially identified by police. Stuart Cundy said in a statement. The monarch has expressed her sympathies to families of victims of the blaze.