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Damp Proofing

hi. Im having problems with an external wall in my three bed semi bungalow. There are two areas of damp. one rising and one coming down from the ceiling

Anonymous user 23/02/2024 - 2.37 PM

Sorry, just read my question again, its the internal skin of a cavity wall not external. Thanks My bungalow is built on a hill and has an intergrated garage beneath. The wall thats damp is above the garage. A section of the garage ceiling is missing (where the rest is fire proof sealed) im wondering if this may be where the rising damp is coming from?? although i have knocked off the plaster and everything appears dry, though the plaster was very heavily moulded. seal the ceiling and re plaster?????? Also when the weather is wet moisture appears two penetrate through the mortar beds, i can see every line on the blockwork on the internal wall. Will vents cure this????

Are you a tradesperson and able to answer this question?

2 Answers

Anonymous user

do not replaster get a competant person to come and inspect it appears that you have a bridging problem better safe than sorry

Answered12 January 2012

Anonymous user

it sounds like you may have dirty wall ties and when the walls were being built mortar has fallen on to the wall ties allowing water to cross the cavity showing up each course as you said.and if the damp is above the garage opening the mortar may have settle on the lintel again allowing moisture to cross the cavity.check the weep holes above the garage opening are free of obstruction to start with. also check guttering and downpipes are in good condition and seals around windows, then if all ok make an inspection hole in to the cavity and using a torch and a mirror inspect the ties and base of the wall for obstructions. sorry it so long winded but this needs to be done if only to alliminate the possible cause.before costly damp proofing.

Answered13 January 2012