Yes in a very Block Residence, the only way for that fire to spread with the garage will be in the ceilint and the opening with the attic stairs might not be sizeable Unless of course The complete garage were on fire and at that point the fire score of https://www.hotfrog.com/company/1cea401892c02fff19c445da909e35a1/so-cal-fire-pits/anaheim/home-improvement