At 16:46hrs Truck 21 and Battalion 21 were added to the working apartment fire in the 7500 block of Branford Dr in Sugar Land. Upon arrival Truck 21 was assigned to the roof division to assist the box companies who were aggressively working to contain a significant fire on the roof of the 4-story loft building. With companies using a combination of hand lines and ladder pipes to knock down the bulk of the fire, crews performed extensive opening up to ensure all extension was checked. Upon completion of roof assignments Truck 21 operated on division 4 opening up until released. This same building suffered a fire approximately 3-4 months prior and was undergoing repairs at the time of this incident. Good job to the box companies who were able to get a handle on it quickly.