How can I stop oil coming through plaster from Denzo tape?

I recently had a new central heating system installed and the pipes were chased in to the wall. The plumbers merchants advised covering the pipes with Denzo tape to prevent any potential corrosion to the copper. The wall was then plastered and emumulsioned, but the oil from the Denzo tape keeps seeping through the paint.





I have tried covering in damp sealant, oil based gloss paint and several coats more of emmulsion and gradually the oil still seeps through and stains the wall.





Any suggesstions of how I can prevent this would be much appreciated.





ThanksHow can I stop oil coming through plaster from Denzo tape?
denzo tape! thats bad advice.





denzo tape is good for protecting pipes in the ground. any sort of tape would have been fine to protect your pipes.


i really can see any other solution than hacking it all out and starting again or hacking off the plaster and use sand and cement first over the pipes before the plaster





paul, gas engineerHow can I stop oil coming through plaster from Denzo tape?
it would be best for you to speak with the plumbers merchants and advise them of this problem to see if they can advise a cure.