Lime and cement

baldric

Hi, I'm helping in doing work on old house...the external walls have multiple layers cement based plaster, the walls are rubble stone and lime mortar, the inside is again recent enough cement based plaster ( last 30 yrs). The internal wall of the gable which faces the south west gets full brunt of weather and it basically weeps water in the right(wrong conditions). For various reasons including financial there's nothing can be done with external walls right now. The idea is to step back 4 inches inside from the "wet wall" and building a frame covering it in breathable membrane and slabbing out with insulated boards etc. Before doing this, is there any benefit in hacking off the internal cement plaster and leaving stone and lime mortar exposed, will this help house breathe better or is it a waste of time as long as external wall is cement plastered?? Is there anything can do internally without Removing external plaster which will improve the situation? Thanks for help

Ps I know He should hack everything off inside and out and do the job right.... that's not an option budget and time does not allow.

Jamesgrace

Talk to the Traditional Lime Company in Tullow, they'll advise you on best practice and are very helpful.