dpc/damp wall

castle96

I had a 'drilled' dpc done 20 yrs ago. Drilling every 18" then injecting with ?
A portion of the interior wall that meets the front door is damp up to 2 feet. Can I redo this process ? Where do I get the 'stuff' (What is it called) How to do it ?
The bricks are blue engineering bricks (very hard). Whatever they injected (special tool/machine) - how the hell did that permiate through blue bricks ?
Can I just drill holes and leave something to seep in ?
Between the bricks there is obviously mortar - that must be the main course of the 'seepage' of damp...?

amarg

You can get damp proofing creams now that are supposed to be effective.

I'm sure that engineering bricks are damp proof though and so if you have a problem perhaps you just need to treat the mortar between the bricks?

Steve_xx

Yes I think it is the mortar that acts in a capillary fashion more so than the bricks. Certainly this will be the case if they are engineering bricks. Therefore I would use one of the cream products that the previous poster suggested, drilling into the mortar and injecting the cream ought to do it