- Rainfall between neighbouring garages (<4” gap between buildings)
- Huge snots of mortar catching rainfall and directing it against bare 7N blocks
- Lack of airflow between buildings to drive out damp
- Piss poor practices of brick slingers
Seal gap at roofline between garages, flagstone / coping stones on left hand neighbour’s roof could be removed and replaced to bridge the gap, although on right side as gap is wider at roof level due to how the garage that side has been built. A epdm or fibreglassed ‘gutter / trough’ could be fashioned to span the gap and drain water into our garden - would need consent from both neighbours
Attempt to knock mortar snots off the walls and clear debris so water doesn’t pool against the blocks - minimal access to get ‘tool’ down the gap and snots could get wedged causing damp further down wall / for neighbours as well
Apply damp proofing treatment to exterior of walls, no idea what or how due to minimal access - neighbouring walls would also likely benefit from treatment but no way of realistically ensuring total coverage
Remove blocks where damp appears, clear out snots and re-insert blocks - probably 8-10 blocks at worst in total that I can see, but problem could just shift elsewhere
Render the inside walls but wary of water building up behind render and blowing the render. This could be potentially improved by applying tanking slurry effectively sealing blocks from inside. Blocks can breathe at the moment but damp can also penetrate.
Add plastic cladding / tanking membrane on inside of garage and potentially add a channel in the floor to collect / drain the water
Run in a new block wall on inside of garage wall with cavity against existing wall, reducing overall internal width by 400mm (assuming 100mm cavity) against 7m width garage
Increasing airflow between garages isn’t really feasible as street side walls are butted up against each other
Any other ideas, pitfalls or options?
