Retro fitting DPC ?

[markus2025]

Hi guys so some members already might of seen posts from me on here of late


im doing a refurb of this 100 year old house its had issues all over with rising damp for many years


after opening up the cavitys i found they where totally blocked with black rubbish which i presume fell down there when the house was build as this house has no sand and cement mortar joints its like a weak coal/ash mix with lime perhaps ?


ive cleaned out all the cavitys and i looked down the line of using a chemical dpc either creams or rods however due to the fact that these products dont always work i went with the line of removing 1 brick up on the internal cavity wall and installing a physical dpc doing around a meter section along at a time working with a roll and keeping it on the roll then replacing the 4/5 bricks letting it go off and then taking out the next meter section ,a couple of freinds i know who are in the trade have suggested i could cause structural issus such as future movement and cracks and have said i should of just used the dpc creams...


however aslong as i make sure when i put the bricks back in that the mortar joints are full which i have been with a tuck pointer and putting my hand around the back of the brick till i feel the mortar coming out could i really cause any future serious issues ??

 

[jj4091]

If the bed that you are placing the bricks onto is packed in as it starts to go off like you say it is then any shrinkage in thefiture will be minimal hardly a long term problem I would think. Basically you are just doing the same as under pinning foundations and I have never heard of that causing problems later.