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External insulation applied to a solid brick wall - before final plaster - South Yorkshire
Crack growth measurement - Montreal
External insulation applied to a solid brick wall - after final brick effect plaster - South Yorkshire

Unbelievable, a stone wall repaired with breeze block - Wales

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Our main stay work is with stone buildings but we have also been asked on many occasions to advise on dampness in solid brick as opposed to modern cavity walled buildings. We use Thermography and Hygrometry to analyse the problem which combined with our extensive experience we are able to recommend a satisfactory solution based often on cost and budget.

 

CaCO3

|

CaO

|

Ca(OH)2

|

CaCO3

(The Lime Cycle)

 

 

 

 

If all else fails then "Tank"

"Tanking" is not a cure and it only covers/masks the problem but sometimes it is the only option remaining to allow a ground floor room or basement to be used. The application of plastic sheeting screwed directly onto a wall is not tanking and is to be avoided as it only a temporary solution. As the problem is not cured the degrading and destroying action of the dampness and moisture remains and the fabric and structure of the building continues to deteriorate.

Typical Testimonial

Hi Eric,
Thank you so much for your help. We have agreed that the wall will be rebuilt replacing the mortar with Lime. We are also getting all the plaster taken off replacing it with lime based plaster and then use breathable paint.

Your comments have been most useful. Its good to know someone who knows their stuff.

Cheers

Rich

 

Thermography is very useful in the detection of dampness. When surfaces are warmed, damp patches remain relatively cold due to evaporative cooling as moisture is lost from the surface. The situation is more complex when moisture is held at depth, as may be the case in a solid masonry structure. Evaporative cooling can only take place when water is present on or near the surface. When moisture is trapped below the surface and heating has been of sufficient intensity and duration, trapped water will show up as a hot spot. This potentially confusing effect is caused by differences in the thermal capacity of the water and the wall. Water holds heat longer than dry stone, so during cooling a mass of water inside a wall shows up as a warm patch. Whether cooling down or warming up, a wet wall will change temperature more slowly than a dry wall.

Thermography
Stenhill House
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Company number 7846492. Director: Eur Ing Eric Reddock MSc,C.Eng, MIMM

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A 500 year old stone and cob walled house Lime pointed with no damp
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Typical Testimonial