Pronunciation: [ˌʌp tə ɹˈaftəz] (IPA) 
The phrase "up to rafters" can be spelled phonetically as /ʌp tu ˈræftərz/. The "up" sound is represented by the "u" and "p" letters, while "to" is spelled with "t" and "o". "Rafters" is a bit more complex, with the "r" sound represented by the letter "r", "a" pronounced as /æ/, "f" and "t" representing the consonant blend, and "e" and "r" pronounced as /ər/. When combined, these sounds create the phrase "up to rafters".
The phrase "up to rafters" refers to something being filled or packed to maximum capacity. It conveys the idea that a space or container is completely full, leaving no room for anything else. The image invoked is of a building or structure with rafters, which are horizontal beams that support the roof. When something is described as being "up to rafters," it means that every available space or area within the structure is occupied, and there is no room to spare. This phrase can be used metaphorically to signify a situation or place being extremely crowded, overwhelmed, or overflowing.
Furthermore, the expression "up to rafters" suggests that the filling or packing is done to a point where it is visibly and abundantly full, nearly bursting at the seams. The visual of the rafters being used as a benchmark emphasizes the extent of the fullness, as the rafters are typically positioned at the uppermost part of a structure. Figuratively, the phrase can be used to describe a situation or event where there is an excess or surplus of something, whether it be people, objects, or emotions. It portrays a sense of saturation, indicating that there is no further capacity or space available. Overall, "up to rafters" serves as a powerful metaphorical expression to convey the idea of completeness and overflowing abundance.
