Advice re lime render/lime wash

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Gwennor

New Member
Hi,

Last August I got the facade of my Georgian house lime rendered and lime washed. House is over 200 years old.

The guy who did the rendering used what he called a lime splatter coat using NHL 3.5 with 3 coats. Mix was 3/1 then scratch coast 3:1 - mix being 2 building sand, 1 sharp sand, 1 lime fibres. Top coat was 4 building sand, 1 lime roughly 10mm for scratch coat and same for finish.

Sorry this is his description and I have to say I am not sure what precisely this all means.
4 days after the lime render the house was lime washed over a series of consecutive days.

A couple of weeks later large splotches started to appear and have not gone away. There are also fine cracks appearing.
I would enormously appreciate any advice or suggestions on what has gone wrong here and how it can be fixed. Every time it rains the lme render gets damp but then dries out very quickly except these awful splotches never go away as seen in the attached photo. The guy who did the render says that he thinks it's the problem with the lime wash having been put on too soon and says we should wait for Summer. Even if it dries out over the Summer, which remains to be seen, won't these splotches reappear in the rainy Wintry months. Our painter who did the lime wash has disappeared :( We specifically wanted the house lime rendered/lime washed because of its age.
Many thanks for any help and suggestions, Gwenn
 

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Vincey

Private Member
Agree with the plasterer it’s moisture trying to get out leave it to dry out properly
 

Gilbert75

Well-Known Member
Wrong site
Hi,

Last August I got the facade of my Georgian house lime rendered and lime washed. House is over 200 years old.

The guy who did the rendering used what he called a lime splatter coat using NHL 3.5 with 3 coats. Mix was 3/1 then scratch coast 3:1 - mix being 2 building sand, 1 sharp sand, 1 lime fibres. Top coat was 4 building sand, 1 lime roughly 10mm for scratch coat and same for finish.

Sorry this is his description and I have to say I am not sure what precisely this all means.
4 days after the lime render the house was lime washed over a series of consecutive days.

A couple of weeks later large splotches started to appear and have not gone away. There are also fine cracks appearing.
I would enormously appreciate any advice or suggestions on what has gone wrong here and how it can be fixed. Every time it rains the lme render gets damp but then dries out very quickly except these awful splotches never go away as seen in the attached photo. The guy who did the render says that he thinks it's the problem with the lime wash having been put on too soon and says we should wait for Summer. Even if it dries out over the Summer, which remains to be seen, won't these splotches reappear in the rainy Wintry months. Our painter who did the lime wash has disappeared :( We specifically wanted the house lime rendered/lime washed because of its age.
Many thanks for any help and suggestions, Gwenn
Wrong dute mste
 

Limedesigns

New Member
Plasterer is correct, needs to be left to be dried out! Also try a different paint something like keim as it’s much better then lime wash! And still let’s the building breath
 

Gwennor

New Member
Plasterer is correct, needs to be left to be dried out! Also try a different paint something like keim as it’s much better then lime wash! And still let’s the building breath
Thank you for your reply. May I ask what is the precise problem with lime wash? Ok if it dries out but won't it return to this state again when the weather turns bad again after the Summer months? Or it will stay dry? So far it's been 5 months since the work was finished and the blotches have not changed at all. They are not changing in size. On the contrary they are exactly the same. Thank you for any additonal helpful suggestions you may have.
 

Brimstone

Well-Known Member
Un related to your patches but I think you're gonna have trouble with "rising damp" if you don't take out that paving edge right up to the render. Rain will just bounce up and soak in.
 

themucky1

Well-Known Member
Thank you for your reply. May I ask what is the precise problem with lime wash? Ok if it dries out but won't it return to this state again when the weather turns bad again after the Summer months? Or it will stay dry? So far it's been 5 months since the work was finished and the blotches have not changed at all. They are not changing in size. On the contrary they are exactly the same. Thank you for any additonal helpful suggestions you may have.
It may be grease spots on the brickwork that’s coming through the render. I bet they had a sh1t bacon and egg sandwich one with red sauce one with brown, tasted like shite so threw them up the wall waiting till they fell off the wall and rendered straight over the grease stains? Not saying that’s what happened but a possibility
 

leefaithfull

Well-Known Member
painted it too soon,,,,,1st coat of plaster leave for 3 days,,2nd coat 5 days 3rd coat 7 days and so on,,,,the lime wash id given it at least couple of months
 

vfr12

MOTORC*NT
lime wash has very little to do in this case.its nhl which sets in the present of h2o,not air.your plasterer should have told you to moisten the render few times a day to achieve proper set.these patches are contamination coming through ,either background or sand.
 

The Hobo

Well-Known Member
lime wash has very little to do in this case.its nhl which sets in the present of h2o,not air.your plasterer should have told you to moisten the render few times a day to achieve proper set.these patches are contamination coming through ,either background or sand.
your a big stranger m8
 

Gwennor

New Member
lime wash has very little to do in this case.its nhl which sets in the present of h2o,not air.your plasterer should have told you to moisten the render few times a day to achieve proper set.these patches are contamination coming through ,either background or sand.
Thank you for your reply. How can it be fixed? If you have any advice? Much appreciated.
 
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