The Barrow and Ulverston stores will collect supplies to deliver to the Carlisle, Penrith and Whitehaven branches.
They will also be giving furniture away free or charging just £10.
Manager Maxine Hughes said: “If there is anything at all we can do to help then we are here to try.”
Latest weather, traffic and travel news
Ambleside woman defends 'flood opportunism' accused man
Luxury Windermere hotel offered to flood victims
Flood-stricken Cumbria pulls together through #spiritofcumbria campaign
Cumbria flood victims urged to be vigilant
Windermere company offers refunds after flood opportunism claims
Health warning to Cumbria residents after floods
Campaign For Cumbria's Flood Heroes Launched
TIMELINE: How Storm Desmond disaster unfolded
Search teams recover body from swollen Cumbria river
Team rescues man swept downstream in Windermere
David Cameron meets Cumbria flood victims
Tragedy as south Cumbria horse is lost in floods
Lake District hotels remain shut after floods
Government will reimburse councils for flood costs
Climate change ‘played a part’ in Cumbria floods
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 The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.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 here