DryZone damp proofing cream is in our opinion the best damp proofing option for older solid walled properties.
It is injected as a cream and slowly spreads along and across the lime mortar bed to give a good damp proofing layer in the structure.
It is a DIY product, but does require a specialist gun for application. This can be hired from the Eco Home Centre in Cardiff for a minimal fee (and deposit).
There is a sliding scale of prices for the cream dependent on quantity needed. For more technical information and installation info please visit the main DryZone website. Note that dryzone comes in boxes of 10 x 600g tubes or individual tubes if required. (Price is for each tube)