Is Rising Damp Real or Myth?
True rising damp is rarer than most people would have you believe. Most damp is due to property faults which show up on the inside of the property as stains or what looks like damp patches due to salt contamination or penetrating damp issues in cavities.
Rising damp appears in some properties 15th 17th Century buildings if the damp course is too high and the joists are laid directly onto the sub soil or are attached to the walls then timber rot appears. Other reasons for damp in a wall are that the original DPC was broken during some building work.
What the Experts Say about Rising Damp
Some experts such as the RICS Conservation a professional body of people qualified with the experience and knowledge in the field of conservation of historic buildings or sites also believe that the chances of true rising damp is in people’s homes is very low and rare.
Looks like Rising Damp
Rising damp looks like other forms of damp, like penetrating damp and condensation which are commonly found in the home.
The two main reasons for moisture at the lower wall level is high external ground levels where paths or soil are higher than the original DPC causing moisture to force its way through the wall. And from blocked drains and leaking gutters causing excessively damp soil or brickwork over a long period of time this all causes penetrating damp problems. Other building faults or improvements will also makes these problems even worse. They are blocked cavity’s full of building debris common in old houses and wet cavity wall insulation.
Condensation in the home is another form of damp which look like a damp problem. Warm air in the house will condense back to water when it touches a cold wall surface and will then run down the wall and soak into the plaster. When on cold days when the heating is on in the house the internal humidity rises above 55% this humidity brings out a stain which looks like rising damp
Rising Damp Survey
A genuinely honest surveyor should spot all these signs and be able to diagnose correctly the faults with your property and then recommend any require damp treatment for rising damp. Much harm can come from mistaken diagnose and not correctly identifying the faults with your property.
If your property didn’t need a new DPC and they drill into your property with hammer drills there will be a 10mm hole at the front of the brick and the rear of the brick will be smashed and broken as the drill punches through. Made worse if the bricks are showing signs of spalling already because old bricks are a lot softer then you think and shatter easily.
Rising Damp Experience
So if musty old smells, clammy plaster and spongy floors are what you are experiencing at the moment this needn’t be a problem if the dampness in the brickwork is allowed to evaporate freely in dry weather.
And the sub floor area has good air flow created by good ventilation by the external air bricks this will create the correct conditions for your property to expel excess moisture breathability and evaporation are the remedies for rising damp concerns.
We understand what causes damp and have the damp proofing expertise and knowledge to give you best advice on your specific rising damp problem and damp issues causing you concern in your home.
Don’t be damp Be Dri call us today and let us help you with any of your damp proofing, woodworm treatments, wall tie replacement, repointing brickwork and wet and dry rot issues.