More than 200 games of pool were played in which hundreds of balls were potted to rack up fundraising money.
A marathon 12-hour sponsored pool session was held at the Portsmouth Deaf Centre, in Arundel Street, Fratton.
More than £600 was raised and the money will go towards helping to refurbish centre’s kitchen.
The event was organised by Daniel Harvest, along with four others.
Daniel, 41, of Portchester, has been coming to the centre for around 30 years.
He has been deaf since birth.
He said: ‘I remember when I was younger I was taken to the old centre for a Christmas party.
‘A minibus came to pick us up and we went to the centre.
‘It was so much fun – there was a clown and it was really funny.
‘Then we would come for games or to watch films.’
The Portsmouth Deaf Centre has been running for more than 130 years.
It has been in its current location for the past 27 years, but has since been in need of a revamp.
So Daniel, along with his brother Jon, 44, set up a pool tournament.
The fundraiser started at 7am and the five-strong team carried on sinking the balls until 7pm.
Jon, of Cosham, said: ‘The money will be used to get new flooring in the kitchen, to paint the walls, get new tiles and a dishwasher.
‘The pool session was great.
‘We want to say thank you to the centre for hosting the game and to volunteers that brought us in teas, coffees and sandwiches to keep us going.’
In all the team played 227 frames during the 12 hours.
The centre hopes revamping its premises will help draw in more members.
The group meets every Wednesday and Saturday evenings from 7.30pm.
The centre offers support to deaf people and those suffering from a hearing impairment.
Activities done together include holding discos and shows, and there is a private bar for functions.
Plus there is a pool and football team.
Club secretary Ann Devaney said: ‘Over the years we aren’t seeing as many new faces as we used to.
‘We want to let members of the deaf and hard of hearing community know we are here and help and support.
‘It’s a great way to meet new people and we have sports and activities to offer.
‘There’s also a bar and refreshment area that can be used.’
To find out more visit portsmouthdeafclub.org.uk.