Cracks

The hot, dry weather has produced many more cracks than usual in our front wall.

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Much of it is plain clay daub with thick layers of limewash and here and there a smear of recent cement where previous owners had tried to stop the clay falling out. There is no evidence of it ever having been rendered or plastered on laths. Continue reading “Cracks”

Back to daub

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Exposed clay daub

After focusing on  a new timber framed extension for so long, we’re now back to repairing the old building. Weak bits of of a rough cement render have been dropping off  the front wall, as the picture shows. The cement is just a thin layer skimmed a few decades ago onto clay daub.

We’ve been expecting this, but took a decision early on to let it happen by natural weathering, and then patch repair bit by bit.  Looking at the evidence of what’s there, we think patching is the way the walls have been maintained for a very long time – any weakness, then they just slapped on a bit of clay and limewashed it, and owners only recently took to adding cement as well. Continue reading “Back to daub”

PS on lime

I gather that there is questioning among some East Anglian lime specialists of the claim reported in the previous post that traditional hair mixes are significantly prone to failure.

As I mentioned, this is not about the well known deterioration of hair if it is left too long in a wet mix before being used, but about intrinsic faults in the hair, especially if it is imported. Continue reading “PS on lime”

Back to tradition – lime plaster

We’re using lime plaster to finish the outside walls. Lime is a fairly recent revival as a building material, and people are re-learning the old trades as they go, so there are still a lot of disagreements about the best way to do things. It’s not yet Lime Wars, but there are regular skirmishes.

Lime plastering the outside
Lime plastering a gable

As we’ve noted before, the Essex way (as taught on a course we attended near Braintree) was to use lime and sand as a hard render on the outside of a wattle and daub house. We repaired a wall like that, only to be told off a year later by a local Suffolk expert: the true vernacular coating in Suffolk was a plaster made from chalk, hair and lime, which is tougher and more flexible. Continue reading “Back to tradition – lime plaster”

Removing cement render – 2013

…. in preparation for the extension

Repairs on a building this age are never really finished, but there is a list of essential jobs we want to do before starting on the extension, for which we won planning permission in late 2012. The first step is to finish the external repairs to the end of the old building where the extension will be built. This means removing a large amount of cement render. Continue reading “Removing cement render – 2013”

Moving on – chalk and woodwool boards

 Our thinking has moved on from when we started work in 2009 and 2010. One advantage of repairing a house very slowly is that it gives time to learn as you go along.

This applies particularly to the question of which materials to use when repairing walls and infill panels and when plastering and rendering, and to the question of energy efficiency. Continue reading “Moving on – chalk and woodwool boards”