Don't throw out any excess calico cut from the boat during construction, as this can be used to make patches should the skin be punctured or torn. Excess bitumen paint should also be kept for regular maintenance - bitumen paint will keep for a long time if stored correctly. To apply a patch, cut the calico to a size larger than the tear. Paint the affected area of the boat and the underside of the patch with bitumen paint. Place the patch over the affected area and paint over the patch with bitumen paint

For quick, temporary repairs on the water, keep a supply of waterproofing tape (Denso or Sylglas - gas fitters - tape), disposable gloves and sharp Stanley knife as your puncture repair kit. Cut the tape to cover the puncture, firmly press onto the skin and leave a few minutes to adhere. Repair with a patch as above when you return home

Broken laths are unlikely, but should they occur they should be attended to as quickly as possible to avoid punctures or tears to the skin. Slit the skin to access the lath and cut away any sharp edges. Cut a suitable length of new lath, soak in hot water (boiling, if possible) for 30 minutes. Affix to the outside of the broken lath, nailing through and clenching over on the inside of the boat. Repair the skin as above