People will be allowed back into the Linwood mosque tomorrow for the first time since the attacks last Friday.
Police said they had almost finished their work at the site and cordons have been reduced to allow pedestrian access to neighbouring stores.
The opening tomorrow means people will not be allowed in for Friday prayers today.
Police said they would continue to have a presence there.
The Al Noor Mosque on Deans Avenue is also due to reopen tomorrow.
Contractors have been working to get it ready.