The Duchess stand is wearing a "hairnet" to protect spectators at the Derby this week - three and a half years after part of its roof first blew off.
High winds ripped-off a section of the roof on Christmas Eve 2013, strewing aluminium and insulation across the Downs.
Jan 2012: Wind rips roof off Epsom Racecourse
Dec 2013: "Full investigation" to be held into why Epsom Downs Racecourse roof blew off again
The hugely embarrassing incident was the second time the roof of the £23.5m building - only completed in 2009 - had failed.
A year earlier, in January 2012 "freak" winds ripped away panels and insulation from the roof which is covered wth a skin of metal no thicker than a credit card.
The roof is now covered with protective netting as a temporary measure, which general manager Simon Durrant referred to as its "hairnet" during an interview last week.
When asked if the roof could come off during the Derby, he said: "No. The Downs is windy, the Downs is windy today.
"Those winds of 2013 were incredibly severe and we haven’t seen them since."
He added: "The hairnet does provide us with the confidence that should we experience those severely high winds that we would remain unaffected."
The Duchess stand wearing its hairnet on Thursday
Strong winds hit the Downs yesterday and the Met Office issued a wind warning for Surrey.
Wind speed was forecast to be up to 26mph at the racecourse yesterday - although the forecast for the rest of the week is for light winds with sun on Saturday.
Last year Willmott Dixon, the company which built the roof, promised to use its "best people" to ensure it does not happen a third time.
The "hairnet" was quietly put on the building in March last year while investigations into the roofing failures continued.
Mr Durrant said it had used "leading experts" to design and install the device and was confident it was robust and ensured the safety of visitors.
Back in 2012 the managing director of the racecourse, Rupert Trevelyan, had demanded a ‘guarantee’ from contractors it would never happen again.
Repairs at the Duchess stand in January 2014 following damage on Christmas Eve
When asked what was being done to provide a permanent solution, Mr Durrant said: "To be fair the fixings have not taken place yet because they want to make sure it doesn’t happen again.
"So the myriad of architects, engineers, etcetera are going through that process now to put together the plan that says it can’t happen again.
"I can’t give you timings because I don’t have them unfortunately but the hairnet won’t be with us forever."
Insulation blown off the roof on Christmas Eve 2013
He said different parts of the roof were damaged in 2012 and 2013, adding: "It was a huge annoyance and frustration at the time.
"But it’s not causing us any problems now and we will leave it to the competent professional to put it right."
The Duchess stand, which has an 11,000 capacity, was officially opened by her Royal Highness, the Duchess of Cornwall, in April 2009.
After the wind damage in 2012, Willmott Dixon told the Epsom Guardian the roof was designed to withstand winds of 47mph.
It later said the roof was designed to withstand gusts of 70mph.
The Duchess of Cornwall, who opened the racecourse, modelling her own headgear
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules hereLast Updated:
Report this comment Cancel