im surprised your gettin damp jobs off the council without bein a registered dpc installer?
Im under the impression that a dpc injection actually REQUIRES you to give an insurance backed guarantee, or at least it does if your gonna be a damp proofer?
thats not to say you cant do it, its just im surprised the council gave you the contract without you bein able to show them a) experience and b) certification...
anyway, most chemical suppliers do training courses...
do a search for triton or sovereign chemicals and navigate to damp proofing sections and look up certification and training..
btw... all the chemical companies will do is guarantee the chemical PROVIDED its been installed correctly which usually requires certification from them hence a training course... a 30 year insurance backed guarantee is supplied by you, the 'damp proofing company' in your name in association with an insurance company (who will also need accreditation / certification / registration) before theyll touch you...
prolly too much info there...
:-[