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Wednesday, 18 January 2017

Great News for Lime Lovers

At last the revolutionary lime product that we have all been waiting for:

From: https://vivus.solutions
I have known for sometime that someday, someone (well I knew whom) would create a special lime product that would answer all the concerns that people have about lime on their buildings. Well folks, that day has arrived.

Vivus Solutions have just launched their website to you access to their amazing materials. Have a look at www.vivus.solutions. Lime has never been easier, quicker, better. Forget all your prejudices, this is a series of products that can be used by virtually anyone on virtually any old building.

We have known for many years that we have been ruining older solid walled buildings by applying modern non-breathable to them. Almost every traditionally built solid walled house is covered with hard cement render or an impervious paint, walls have been re-pointed with cement mortars that lock in moisture and cause the bricks and stones to spall. This has been due to a large amount of ignorance in the mainstream industry and a lack of awareness from owners. Time and time again I, and many others, have stated that lime mortars and renders need to be used on projects, but clients end up listening to mainstream builders and surveyors rather than conservation specialists.

For years, the industry has moaned about the fact that lime is slow, difficult to use, expensive, unreliable and just out of reach for most. Well I think that this is a game changer.

As well as being an Air Lime (which provides a highly breathable mix) this new series of products are sent out dry. No longer will we have to pay for wet mixes to be delivered. So already it is money saver. The 20kg bags are designed to be mixed up in a standard mixing tub with a plaster whisk.

The small bag sizes are important for two reasons. Firstly Health and Safety but also the fact that each mix will be dry in a day. So you don't want to have it sitting around for long.

Dry in a day! That is truly remarkable for a non hydraulic lime. However, it will still carbonate like a putty over time, so it will still absorb CO2. So the trick has been to get an Air Lime to set this quickly. Great stuff. This means that suddenly you are not there waiting around for days for first sets / coats to dry etc. As I say, a game changer.

I would highly recommend that people have a look at all the products available - there are internal plasters, external renders, mortars and even some pre-formed laths. Spread the news!

Note: We do not benefit commercially at all from this product, or from Vivus Solutions, I just think that it is great.

6 comments:

  1. This comment has been removed by the author.

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  2. Is this dry hydrate? £5.00 a bag in the farmers coop. Or does it set up quickly with no additions? Data sheet says CA( OH )2.....I'm intrigued!

    " As well as being an Air Lime (which provides a highly breathable mix) this new series of products are sent out dry. " Is it highly breathable because its an Air lime- or vice versa? Either it sets in the air ( i.e. it carbonates ) or is sets hydraulically ( i.e. once water has added ) So, how does Ca(OH)2 set in any other way than by re-absorption of CO2 ( a slow process ) - unless theres a natural ( or other ) hydraulic set? Gypsum?

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  3. Well that is the trade secret. The important things are the aggregate and the source of the lime. So not simple hydrated lime. So it can set quickly for workability and finishing, but then carbonates normally. I had a similar product (but putty based) used on my house by an associate of Harry. Render was hard enough next day for subsequent coats. Limewash on next / same day as well for finish. This is next generation dry mix.

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  4. As a specifier and designer, I would always seek full product information. The products that I would use, always give complete product information. There can be no ' secrets ' in this field. There is no ' magic ' to the chemistry of binders.

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  5. Hi Strange Brew. I don't think that there is any major secret in the sense of ingredients. From what i gather Harry has spent many many years experimenting with different sources of the 'same' material. He has perfected the right quality of materials and has looked at length of different options for aggregates and this combination gives this result. Have a chat to Harry Cursham at Vivus and I am sure that he will be able to assist with full product info. Cheers, Peter

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  6. The small bag sizes are important for two reasons. Firstly Health and Safety but also the fact that each mix will be dry in a day. So you don't want to have it sitting around for long.custom plastic injection molding 

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