-
Nice you got up there!
Seen it done before as a temporary measure to get through winter...... cement backer board for showers wrapped in breathable roof felt over/tucked in the stones, to get the walls to dry out and confirm if thats where the water was coming from (can take months to really get dry).
For permant have seen folk wrap them in Grade 5+ lead or lay underneath.
Tap the render as far as you can reach, any hollow spots just get whole thing done, cost of scaff will be higher than the render, even if its lime or harled (Scottish style). Good render does 20- 40 years service. There is that new 1 bag silicon (?) stuff thats meant for new properties but there are variants you can use on old, in UK no one really uses it outside of extremely exposed areas (West coast of Scotland on new custom houses its the number 1 product) but very easy to work with compared to traditional materials. Have done a few chimneys and one small (30m2) gable been impressed.
You are reading a single comment by @BrickMan and its replies.
Click here to read the full conversation.
BrickMan
Up on the roof, too high to fill in the cornice crack from a ladder? Render definitely blown. Coping stones to be covered.
Thinking - asap - cover coping stones in grade 5 or 6 lead
Try re render top section above cornice on the wall (about 1m down from the top of the roof) whilst also incorporating a led flashing over the cornice
Leave the main bit of wall and render to next year