The council has insisted rotting play equipment in Egerton Park does not pose a risk to children.
Rother District Council installed the equipment just three years ago at a cost of £272,423, including £36,000 spent on creating sand and bark pits edged by logs.
But despite being guaranteed for 15 years, a recent inspection found the logs have become rotten and need to be replaced.
The bill for the repairs will be paid for by the contractor and not Rother taxpayers, the council says.
Last month, fences appeared around the affected play equipment.
There is no news on when the equipment is expected to reopen, although the council says the repairs are likely to take a few weeks.
A Rother District Council spokesman said: “The problem with the rotten timbers at the play area was discovered during inspections carried out by our grounds maintenance contractor.
“The problem affects the retaining logs which surround the sandpit and a bark pit around the feature play unit, which includes a timber climbing unit with slide.
“The logs are guaranteed for 15 years, therefore, as part of our agreement, the contractor will pay for the full cost of the repairs.
“The problem only affects the retaining logs which hold in the sand or bark, not any of the play equipment itself, and there is no danger to children.
“The affected areas are being closed off to allow the rotten timbers to be replaced and will reopen once this is complete.
“We’d like to thank parents for their understanding and to apologise for any inconvenience while this work is carried out.”