The Harmony Royalex Repair Kit is designed and assembled to repair structural damage to Royalex hulls whether it's cracks, cuts, deep creases, or holes. Kit includes enough material to repair a section 1 in. x 6 in. Use resin to fill creases, dents, or holes. Kevlar cloth is impregnated with resin and used as reinforcing layers to bridge cracks or tears. Repair can be painted to match hull color.
Directions were easy to follow (although mixing 1 to 5 was hard to measure, and cloth was hard to cut). 24 hrs later, voila, dry. Then canoed for two days down a fast but low and rocky WI river, hitting quite a few rocks and the patch held up just fine! I am ready to patch again with this product again, if I have to. I recommend this product!
Would have given a 5 but the white compound made it difficult to blend a pigment in to get the deep red I wanted. ended up rather pink and had to paint over. Structurally it is a 5