Sympathetic damp solutions are necessary on a property like this. This is promoted in the new joint damp methodology by RICS, Historic England, SPAB, PCA & in my opinion in the below video you can see the solutions to deal with the root cause of damp, that were not noted by the previous free damp survey. The survey takes you from enquiry, survey, right through to the repairs.

Its really important to make sure you ask the damp specialist prior to booking a survey the questions to ensure the surveyor is competent, and most importantly give you the correct damp diagnosis.

1. First of all you need to make sure your damp surveyor is suitably experienced, and qualified. 

2. You must ask for an invasive / intrusive survey if it’s anything to do with damp at the base of the wall, and possibly bridging of the dpc, like rising damp. Non invasive surveys will simply not be good enough. 

3. An averagely competent surveyor will follow the guidance in BS 6576, as per what I have spoke about in this video.

4. They will also need to follow the methodology in BRE DIGEST 245. This is basically the only quantitative methodology to confirm rising damp, by using a carbide meter / speedy meter or better still gravimetrics. 

5. Make sure all of the below are eliminated as a potential cause by your damp surveyor, as per guidance in BS 6576 

1. Condensation 

2. Lateral penetration associated with ground and floor level 

3. Leaks from roofs gutters, and downpipes 

4. Faulty drains 

5. Internal plumbing leaks 

6. Water penetration through external walls 

7. Water penetration around windows and doors 

8. Mortar droppings in the cavity 

9. History of flooding 

I do find that if a physical damp proof course is present and there is damp on internal walls, there is a high possibility there could be drain issues, or a possible leak.

Posted by Complete Preservation

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