Damp Wall

[Colour Republic]

I get the construction, the back of the house in underground but the front is not, right?

But you say now a 'block' so is it a flat? Doesn’t really matter too much but helps to visualise and also what you can and can't do outside the property

 

[robuphill]

Like i said its built on a hill, it is a block of 4 houses/flats the ground floor has bedrooms etc, and downstairs has bathroom, lounge etc.

 

[DHTiling]

The wall needs to breath as it is part of the hill construction i gather....not like a traditional basement in the uk..

That is why Gib is called the rock... my neice lives on Gib..Army wife..🙂

You should be ok to build a false wall in front but away from contact with the affected wall...but you have to be careful not to leave a haven for mould to grow.

A lot of uk barn conversions have that have damp isues have Metal stud stoothing walls so the damp doesn't effect them..

But without actually seeing the set up it is not easy to say either way..

 

[dock]

sounds like a job for Mapei Idrosilex or Idrosilex Pronto

 

[Colour Republic]

sounds like a job for Mapei Idrosilex or Idrosilex Pronto

Care to share how that one works? not seen it before, quick outline as I know we can get the full details from your website

 

[dock]

Yes CR

Idrosilex Liquid is the best for resisting negative hydrostatic pressure. When mixed with cement:sand as directed on the data sheet the liquid component combines within the cement matrix such that water molecules cannot penetrate.

 

[Colour Republic]

so similar to vandex?

 

[robuphill]

The wall needs to breath as it is part of the hill construction i gather....not like a traditional basement in the uk..

That is why Gib is called the rock... my neice lives on Gib..Army wife..🙂

You should be ok to build a false wall in front but away from contact with the affected wall...but you have to be careful not to leave a haven for mould to grow.

A lot of uk barn conversions have that have damp isues have Metal stud stoothing walls so the damp doesn't effect them..

But without actually seeing the set up it is not easy to say either way..

This sounds like the easiest and cheapest option, if i leave some breathing vents at the top of the false wall should this be enough to alleviate the mould build up you mentioned? Also if i leave an inch is this sufficient??

Cheers

 

[lucius]

I do loads of these rob and i live in Spain, if the house is 150 years old it is built of rock and clay or rock and lime morter. There is no succesfull way of tanking these walls with chemicals, originaly it may have just have been animal quarters so they werent bothered by damp. If you cant remove the earth from the outside do as has been said build a false wall from metal stud boarded with MR plasterboard or cement board if you can get it and afford it, if you use 50mm stud make some brackets from the track and fix the studs to the wall midway or more depending on ceiling height to keep it rigid especialy if you are tiling it. You could increase the stud to 75mm if you feel the need or even I stud, make sure you put air bricks in top and bottom every 1.500 or so to ventilate the void.
Lucius.

 

[lewis1967]

There is the option of using Sovereign "Heydi K11" ... Its a cement based damp proofing system .. You will not find a better option and not have to lose space as with studding out you wall ... Sovereign Internet Goto Tanking ....
Under Video's & Literature There is a Video to see what it does and how it works etc..
I hope this helps ..