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    • CommentAuthorGBP-Keith
    • CommentTimeMay 24th 2016 edited
     
    Following major success with the product range in Central Europe, Bauwer Group has introduced its cost efficient, sustainable and environmentally friendly insulated render and plaster system to the UK. Thanks to volcanic glasses called Perlite and Vermiculite, it is the most cost-effective solution to insulate and level walls while improving the comfort and sound absorption properties of a building.
     
    With its mineral basis, lime and cement, Bauwer render is very similar to the traditional renders and plasters, which makes it ideal for use in buildings improvement projects, internally as well as externally. It can readily be applied by any experienced plasterer using standard equipment.
     
    The knowledge behind Bauwer’s insulating render and plaster is based on simple processes applied to naturally occurring minerals called Perlite and Vermiculite. Rapidly heating perlite ore to temperatures of about 900°C softens the volcanic glass causing entrapped water molecules in the rock to turn to steam and expand the particles like popcorn. The expanded particles are clusters of minute, lightweight, insulating, glass bubbles. Sophisticated manufacturing techniques allow the expansion and collection of individual perlite bubbles, which are used as fillers within Bauwer Insulation. These minute pores make Bauwer an excellent insulation material for use in a variety of different applications which are two to three times more cost efficient than traditional render due to the lightweight nature of Bauwer.

    A further advantage of Bauwer insulation is that the wall remains permeable to water vapour. Bauwer Insulation is significantly more breathable than conventional plasters, and hence it is able to withstand fluctuations in internal and external humidity which helps prevent any damp or mould issues.
     
    Perlite and vermiculite do not emit any odours and are resistant to chemical and biological environmental effects. Bauwer insulation contains no organics, is chemically inert, biologically stable, non-toxic, harmless and entirely safe. Perlite and vermiculite minerals are used in water filtration and horticulture industries as well, due to their lightweight structure and non-toxic, inert nature.
     
    The first building in the UK plastered by Bauwer was in central London, Carlton Hill. The cost saving vs traditional plaster was about 40%.

    Read more at: http://bauwer.co.uk
    • CommentAuthorringi
    • CommentTimeMay 24th 2016
     
    How flexible is it compared to lime plaster?
    • CommentAuthorgyrogear
    • CommentTimeMay 24th 2016
     
    well, it might be sponsored, but I shan't be buying any.

    gg
  1.  
    I assume the blurb is a poor translation of the original, but it *is* poor. Revision would be good.

    I have asked the OP (not Keith!) for details of the thermal performance, and indeed whether Building Control were aware of the London scheme referred to as a case study, since I believe it may be classed as 'renovation' (and thus subject to the U value targets in Part L). I have not yet had a reply.
    •  
      CommentAuthorBauwer
    • CommentTimeMay 25th 2016 edited
     
    Hello to All Members,

    I would like to take this opportunity to introduce myself as Bauwer manufacturer representative in the UK, based in Liverpool. I will be focusing on Bauwer business development throughout the UK.

    I am new to the forum and I am looking forward to join the forum community.

    Regards,

    Alexander
    •  
      CommentAuthorBauwer
    • CommentTimeMay 25th 2016 edited
     
    > I assume the blurb is a poor translation of the original, but it *is* poor. Revision would be good.

    > I have asked the OP (not Keith!) for details of the thermal performance, and indeed whether Building Control were > aware of the London scheme referred to as a case study, since I believe it may be classed as 'renovation' (and >thus subject to the U value targets in Part L). I have not yet had a reply.

    Hello Nick,
    Thanks for your comments. We’ll consider a revision following your feedback.

    The best place to find out about the Bauwer range of products, including thermal performance characteristics, would be visiting our web site at http://bauwer.co.uk

    Originals of Bauwer thermal testing are posted at Certification page:
    http://bauwer.co.uk/templates/Default/images/BAUWERThermalconductivityLight.pdf
    http://bauwer.co.uk/templates/Default/images/BAUWERThermalconductivityTesting.pdf

    Now few words about Bauwer itself, it is light-weight (280kg/m3) due to Perlite and Vermiculite fillers, delivering outstanding coverage of 1m2 at 25mm thickness from one 25L bag. With the price of £9 per bag, including delivery and VAT, Bauwer is one of the most economical ways to level and insulate the walls. It is strong (compressive strength 2,19 N/mm2; bond strength 0,5 N/mm2) and easy to apply, no significant difference in application techniques vs traditional plasters or renders.

    The feedback from a professional UK installer was: “We applied 50mm of Bauwer Light to the block wall, building it up in passes to establish if the product would roll under the trowel. The product showed no signs of any rolling and we could have gone on a lot thicker. Very easy to use and finished well enough that just a paint coating could be applied. The internal product, Bauwer Standard, was equally as good in our opinion as Bauwer Light”.

    Bauwer is still relatively new in the UK, there are several Bauwer projects are ongoing in the UK and Germany, all initial feedbacks were highly positive.

    At the moment we are also working with Svenska Aerogel AB in order to deliver a vapour permeable, cost efficient insulated plaster with a benchmark thermal performance of below 0.032 W/m*K. We expect to deliver Aerogel based Bauwer insulated plaster by the end of this year.


    In regard to the London property, we used combined internal and external thermal and acoustic insulation. We applied Bauwer insulation plaster internally and rock mineral wool slabs externally, delivering the total U value well superior to the requirement.


    Regards,

    Alexander
    •  
      CommentAuthorBauwer
    • CommentTimeMay 25th 2016 edited
     
    > well, it might be sponsored, but I shan't be buying any.

    > gg


    Hello,

    That’s correct; the post above is sponsored, indeed :)

    As Bauwer is relatively new to the UK, we offer free product samples, normally couple of bags but we could send more bags for a larger, automatic spray machine contractors (Bauwer works well with PFT G4, G5 and Ritmo spraying machines).

    It is possible to order free Bauwer samples by advising your name, email, application specifics, delivery address and a contact number to info@bauwer.co,uk

    We’ll arrange a prompt courier delivery from our warehouse in Bournemouth.


    Regards,

    Alexander.
    •  
      CommentAuthorBauwer
    • CommentTimeMay 25th 2016 edited
     
    > How flexible is it compared to lime plaster?

    Hello,

    Thanks for your question!

    Bauwer Standard, hardened density 320kg/m3 is about the same flexibility as lime plaster. Bauwer Light, at a lower 280kg/m3 density, is slightly less flexible, but with a higher thermal performance.

    Generally Bauwer products are plasterer friendly, both in manual application and spray machine application as well.


    Regards,

    Alexander.
    •  
      CommentAuthordjh
    • CommentTimeMay 25th 2016
     
    Bauwer wrote: "Originals of Bauwer thermal testing are posted at Certification page:

    http://bauwer.co.uk/templates/Default/images/BAUWERThermalconductivityLight.pdf
    http://bauwer.co.uk/templates/Default/images/BAUWERThermalconductivityTesting.pdf"

    I see those certificates quote λ10,dry values, whereas BBA and PHI require all lambda values to be 90/90. The measurement standards also don't seem to be as recent as those used by the BBA

    http://www.bbacerts.co.uk/download/document-types/guidance/Thermal%20Conductivity%20and%209090%20values.pdf

    Perhaps you could explain a bit more about the values?
    •  
      CommentAuthorBauwer
    • CommentTimeMay 25th 2016
     
    If you go back and edit your posts, selecting Html format instead of Text format, the quotes will come out right. But URLs won't then appear as links.

    Thanks for that! Good advice :)
    •  
      CommentAuthorBauwer
    • CommentTimeMay 25th 2016 edited
     
    > Bauwer wrote: "Originals of Bauwer thermal testing are posted at Certification page:

    > http://bauwer.co.uk/templates/Default/images/BAUWERThermalconductivityLight.pdf
    > http://bauwer.co.uk/templates/Default/images/BAUWERThermalconductivityTesting.pdf"

    > I see those certificates quote λ10,dry values, whereas BBA and PHI require all lambda values to be 90/90. The > measurement standards also don't seem to be as recent as those used by the BBA

    > http://www.bbacerts.co.uk/download/document-types/guidance/Thermal%20Conductivity%20and%209090%20values.pdf

    > Perhaps you could explain a bit more about the values?

    Sure, declared value of lambda (10, dry, 90/90) characterises the thermal conductivity of the insulation material at the mean temperature of 10 degrees C, under dry conditions, representing at least 90% of the production with confidence level of 90%. This is a standard requirement for CE marking, same requirements in the EU and the UK.

    We will also progress shortly with the Bauwer thermal testing at the BBA. We’ll be posting all the BBA testing results at Certification part of our website as well.

    It is worth mentioning that thermal conductivity of insulation materials essentially depends on the size and the air cavities and their even distribution in the insulation material. Therefore the density of the insulation material is proportional (not linear though) to the thermal performance, the lower the density the better thermal performance and vice versa. Buawer products have the lower hardened density vs. competition.

    There are more than 30 insulated renders at the UK and EU markets. You could also see a comprehensive analysis, research (cost vs. performance) issued by Torino University back in 2014:

    http://www.hipin.eu/publication/files/EnergyAndBuilding.pdf

    Too many details to read …. but my point is that Bauwer rates extremely well at this comprehensive comparison, due to light-weight (hardened density 280kg/m3), reasonable true thermal performance (0.068 W/m*K), good application characteristics (manual and auto spray friendly) and a low price (£9 including VAT and delivery for a 25L bag delivering the output of 2.5 square meters at 10mm thickness).

    Another advantage of Bauwer is a monolithic structure which avoids the presence of thermal “cold bridges” which could potentially reduce an actual thermal performance by up to 40% from a declared value. I mean non vapour permeable phenolic, EPS, XPS boards, etc.


    Regards,

    Alexander.
    •  
      CommentAuthorSteamyTea
    • CommentTimeMay 26th 2016
     
    Posted By: BauwerAs Bauwer is relatively new to the UK, we offer free product samples, normally couple of bags but we could send more bags for a larger, automatic spray machine contractors (Bauwer works well with PFT G4, G5 and Ritmo spraying machines).
    I may be interested in a sample or 4. Is there a time limit between manufacture and usage. Plaster has a habit of 'going off in the bag' if left too long.
    How about putting up a code so that you know it is from people on here, or at least people that have viewed your product on here when they order a sample?
    •  
      CommentAuthorBauwer
    • CommentTimeMay 26th 2016 edited
     
    > I may be interested in a sample or 4. Is there a time limit between manufacture and usage. Plaster has a habit of >'going off in the bag' if left too long.
    > How about putting up a code so that you know it is from people on here, or at least people that have viewed your > product on here when they order a sample?

    Hello Tea,

    Thanks for your interest in Bauwer sustainable range of products.

    Our insulated plaster shelf life is 18 months from manufacture date indicated on the package. We do not store our product even for 3 months, as Bauwer products are very popular at the moment.

    Please let me know more details on your requirements, eg. Internal, external walls or floor insulation; manual application or spray machine; nature of your business, etc and we’ll send you few bags samples from our warehouse in Bournemouth.

    We would also need a delivery address, contact person and telephone for the delivery.

    Bauwer products are produced at the state of the art, modern manufacturing facility, on the fully automated manufacturing line, which was specifically designed for dry mixes with light fillers.

    There are many positive reviews on Bauwer product performance, latest feedback on The Plasterers Forum: “Used Bauwer products, easy to use and finish and you can get a good depth on it.”

    Hope this helps,


    Regards, Alexander.
    •  
      CommentAuthorBauwer
    • CommentTimeMay 26th 2016 edited
     
    >Hello there, could we discuss this? My build will be featured on TV's 'Grand Designs' as it will be an environmentally >friendly eco house built from hempcrete. We're looking to start in the next few weeks. The internal finish needs to >be breathable, so I was looking at clay or lime, but both are quite challenging (and >expensive). Your product >sounds interesting.

    >Looking forward to hearing from you.

    >Best regards

    >Paul


    Hello Paul,

    Thanks for your interest.

    The preferred product would be Bauwer Light, it has number of f benefits, including:

    THERMAL PERFORMANCE (Bauwer Light offers good level of thermal performance)

    ACOUSTIC PERFORMANCE (Bauwer products provide high levels of sound reduction)

    FIRE PERFROMANCE (Every Bauwer product has an unbeatable Eurocalss A reaction to fire rating, withstand temperature greater than 900C )

    EASIER TO HANDLE AND TO APPLY (plasterer friendly, no difference in application vs. traditional plasters)

    SUSTAINABLE AND ECO-FRIENDLY (made from naturally occurring volcanic glass perlite and vermiculite)

    DEHUMIDIFYING AND VAPOUR PERMEABLE (allow walls to breathe leaving them dry)

    BIOLOGICALLY AND CHEMICALLY INERT (rot proof, does not sustain vermin and will not encourage the growth of fungi, mould or bacteria).


    I just sent to you and email with few questions on your projects and more details on Bauwer product application. Talk you later today,


    Best regards,

    Alexander.
  2.  
    (comment edited)
    •  
      CommentAuthorBauwer
    • CommentTimeJun 7th 2016 edited
     
    How Easy is Bauwer To Apply?

    Bauwer is a high performance ready to mix eco-friendly thermal insulation plaster for both internal & external use. It’s based on cement, lime and naturally occurring volcanic glass such as vermiculite and perlite. It’s used for thermal insulation, sound-absorbing as well as fire protection.

    Along with the insulating and sound absorbent properties, Bauwer is incredibly light-weight and vapour permeable (breathable) too, this helps to prevent internal condensation which means a healthier living and working environment, but how easy is it to apply?

    Bauwer Plaster is simply mixed with water, and then applied straight on to internal walls using a trowel. A domestic installation can typically be completed within 2-3 days and is soon ready for re-decorating.

    Please see the application video at:

    https://youtu.be/oxogp2uRgaw
    • CommentAuthorkebabman
    • CommentTimeJul 4th 2016
     
    I contacted Alexander to trial Bauwer and received a bag of Light and Standard a few days later.
    I have trialled the bag of standard. I measured 12L of water into a trug, I was tempted to add a little more but was glad that I didn't as after mixing the consistency was good, like an aerated mousse. As a complete plastering novice I was really pleased with how easy it was to apply even onto my curved window reveals. Some areas need some more work before a final finish but that is mainly down to not being able to use a straight edge in all places.
    I am waiting to see how it hardens up over the next 28 days.
    •  
      CommentAuthorSteamyTea
    • CommentTimeJul 4th 2016
     
    I will look forward to your report.
    Do you think it will be easy enough for a complete novice to use as I have an wall that has had some water damage that I need to repair. So rather than a quick re-skim, I thought I would give this stuff a go.
    • CommentAuthorkebabman
    • CommentTimeJul 5th 2016
     
    @SteamyTea
    I would definitely have a go. If you can apply it inbetween a couple of battens and then use a straight edge you should get a really good finish. If you are just doing a patch then I guess just a straight edge would be fine.
    I haven't tried sanding it and I don't know if that is recommended but it would probably fix any blemishes.
    •  
      CommentAuthorSteamyTea
    • CommentTimeJul 5th 2016
     
    Thanks, I may take them up on the free offer. Just another thing I have to do :bigsmile:
    • CommentAuthorkebabman
    • CommentTimeJul 6th 2016 edited
     
    I have just tried putting the palm of my hand on the surface of a rendered south facing window reveal that I lime and sand rendered before I had heard of Bauwer products, it feels cold and damp. Whilst the Bauwer covered reveal, to the same window, feels warm after a couple of seconds. The thicknesses applied were pretty much the same in both cases.
    So it looks like I will be hacking off the render, shame I got a fairly good finish to it!
    •  
      CommentAuthorSteamyTea
    • CommentTimeJul 6th 2016
     
    I found out I know someone that can plaster, I just don't want to pay him to do it:bigsmile:
    •  
      CommentAuthorBauwer
    • CommentTimeJul 7th 2016
     
    Posted By: kebabmanI have just tried putting the palm of my hand on the surface of a rendered south facing window reveal that I lime and sand rendered before I had heard of Bauwer products, it feels cold and damp. Whilst the Bauwer covered reveal, to the same window, feels warm after a couple of seconds. The thicknesses applied were pretty much the same in both cases.
    So it looks like I will be hacking off the render, shame I got a fairly good finish to it!


    Thanks for your feedback :)

    The reason why Bauwer surface is feeling warm is because it is very light, only 320kg/m3 due to Perlite filler and lots of air bubbles trapped within Bauwer.

    Perlite is a generic term for a naturally occurring glass of volcanic origin. The distinguishing feature that sets Perlite apart from other volcanic glasses is that when heated to a suitable point in its softening range, it expands up to twenty times its original volume, like a pop corn. This is due to the rapid expansion of water within perlite, which creates the extremely light perlite that we use to filter our water and wine, insulating our homes and within the garden arena, with many benefits when it comes to it's horticultural and insulation uses.

    Read more on Perlite at:
    http://bauwer.co.uk/templates/Default/images/Sustainability_Factsheet_Perlite.pdf

    http://bauwer.co.uk/templates/Default/images/Why_Perlite_Works.pdf

    Again, thanks for your review,

    Best regards,
    Alexander
    info@bauwer.co.uk
    •  
      CommentAuthorBauwer
    • CommentTimeJul 7th 2016
     
    •  
      CommentAuthorBauwer
    • CommentTimeJul 11th 2016
     
    Posted By: SteamyTeaThanks, I may take them up on the free offer. Just another thing I have to do:bigsmile:" alt=":bigsmile:" src="http:///newforum/extensions/Vanillacons/smilies/standard/bigsmile.gif" >


    Hello :)

    If you could let me know the details of your project; we'll see what we could do for you :)

    We would need to look at the following project details like total square meters, internal or external job, thermal insulation, dehumidification or just decoration, etc

    Kind regards,
    Alexander
    info@bauwer.co.uk
    •  
      CommentAuthorSteamyTea
    • CommentTimeJul 11th 2016
     
    OK, I shall get back to you after the summer. Summer is by busy time and I have no time at the moment.
    •  
      CommentAuthorBauwer
    • CommentTimeJul 15th 2016
     
    Posted By: SteamyTeaOK, I shall get back to you after the summer. Summer is by busy time and I have no time at the moment.


    No problem :) have a good weekend
  3.  
    Internal insulation and flat finish, approximately 75m2

    What's the u value, prices and is it truly DIYable? If a wall is 8m long hours do you do it in one go? With batons and sections?
  4.  
    ''What's the u value''

    What's the thickness of insulating plaster proposed, and what's the thickness and make-up of the existing wall? Can't give an answer without knowing those things. Edit: Oh, and the lambda value of the insulating plaster, of course!
  5.  
    Earlier in this thread there is reference to a lambda value of 0.068W/mK. On my 225 solid brick wall this would, for example, give me a u value of around 1.2W/m2K compared to an as-built u value of 2.1W/m2K.
   
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