The church, which has the third tallest spire in the United Kingdom, and is the tallest on a parish church, secured a £250,000 grant for urgent roof repairs from the Catholic Confreres of England Wales via from Historic England in October, and since then, a raft of scaffolding has been erected to facilitate the work.
>>>Click here to read more about the £250,000 grant.
Now the work to replace the 13,000 slates will begin - with work set to last until July. In total 13,000 tonnes of Westmorland slate is needed, with 26,000 nails.
But despite the grant, the church leaders and fundraisers still need to find thousands more, after an unexpected rule change.
"It means we're now well behind in our plan, and for that reason, we need to continue our fundraising efforts. We also have to think about the ongoing maintainence of the building."
For some time, the church has been offering people the chance to sponsor a slate, and has been offering people the chance to walk up the famous spire at £10 a ticket.
>>>Click here to see the views from a spire walk.
The spokesman added: "While the aim is to restore the church and make it safer, the spire walks also give people the chance to access and enjoy this very special building and share its outstanding heritage.
"It's important to remember that the church belongs to the wider community, to everyone, not just to the people who worship here."
The spire walks
On January 15 and 22, visitors will be able to ascend the 309 foot (94 metres) high spire.
The times of access are 7.30pm to 8.30pm and e-tickets are £10.
After the ascent visitors will be invited to enjoy refreshments such as mince pie and mulled wine.
Tickets can be purchased online here.
For more information on the walks or sponsorship, contact: Walburga Weston [email protected] or call 07778 506 832.