The complete guide
Buying spares before you're up a ladder — Freeflow Black Square Gutter Union Joint
It's far cheaper to order two or three spare union joints and a handful of clips than to make a second trip up a ladder for one missing part. Guttering jobs are almost always more efficient done once with slightly more stock on hand than needed — keep the Freeflow Black Square Gutter Union Joint as a standing spare if you maintain more than one property.