Hello to All Members. High quality insulation render and insulation plaster from Bauwer.

I was asked few times about automatic application of Bauwer products. Our insulated render and plaster are machine friendly and have been widely used on PFT G4 and PFT G5 machines, receiving positive feedbacks from the installers.

Our sample product is going fast, but it is still available for your orders, just PM me with your details.


Regards,

Alexander.
 
@Bauwer if you was to hack off a certain amount about 75% I think, you would have to re plaster but current U values would come in, what u values does your gear have compared to sand and cement? If that's the right way of putting it Cheers
 
@Bauwer if you was to hack off a certain amount about 75% I think, you would have to re plaster but current U values would come in, what u values does your gear have compared to sand and cement? If that's the right way of putting it Cheers

Thanks for the question! Bauwer thermal performance is massively superior vs traditional sand and cement render due to light-weight of Bauwer mortar. Thanks to the naturally occurring volcanic glass, vermiculite and perlite, Bauwer hardened density is only 280kg/m3 (Bauwer Light) vs. 1,500+kg/m3 density of the traditional render. There is a relation between mortar hardened density and it's thermal performance, the higher hardened density of the mortar, the lower the thermal performance and visa versa.

In the context of your question, U value of the total wall system is considered, eg. wall and applied mortar. The best way to look at it is to use U value calculator, as different built years had different wall designs, due to the changes in the building regulations over time, and therefore U values. We are developing a Bauwer U value calculator on our we site at the moment.

Answering your question on a particular example: assuming unfilled cavity wall design, built in 1983-1995 will have U value of 0.60
If we apply 80mm of sand and cement render, we would improve U value only to only 0.58 due to poor thermal performance of traditional render.

If we apply 80mm of Bauwer Light (in two layers of 40mm) we would improve U value to o.35 due to thermal performance of Bauwer and it's light hardened density.

Bauwer application is seamless and breathable (vapour permeable) therefore the real thermal performance is the same as declared. It is not always the case in alternative insulation systems when real thermal performance is compromised vs declared due to heat loss through "bridges of cold" or heat losses in the non breathable systems due to the excessive ventilation.

On the top of thermal performance, Bauwer delivers a significant £ savings per m2, due to the fact that you need less product to cover the area, as Bauwer is light weight and when it is mixed with water, higher volume of render is achieved.
 
More information on Bauwer Insulated Render and Plaster application using PFT plastering machines:

The best Bauwer performance is achieved on following rotor/stator codes:

Twister D 6–3 to 2. grain size up to 3m.

The maximum particle size in Bauwer products is 0.86 mm.


Please feel free to PM me, if you need any further details or information on Bauwer application.


Regards, Alexander.
 
Thanks for the question! Bauwer thermal performance is massively superior vs traditional sand and cement render due to light-weight of Bauwer mortar. Thanks to the naturally occurring volcanic glass, vermiculite and perlite, Bauwer hardened density is only 280kg/m3 (Bauwer Light) vs. 1,500+kg/m3 density of the traditional render. There is a relation between mortar hardened density and it's thermal performance, the higher hardened density of the mortar, the lower the thermal performance and visa versa.

In the context of your question, U value of the total wall system is considered, eg. wall and applied mortar. The best way to look at it is to use U value calculator, as different built years had different wall designs, due to the changes in the building regulations over time, and therefore U values. We are developing a Bauwer U value calculator on our we site at the moment.

Answering your question on a particular example: assuming unfilled cavity wall design, built in 1983-1995 will have U value of 0.60
If we apply 80mm of sand and cement render, we would improve U value only to only 0.58 due to poor thermal performance of traditional render.

If we apply 80mm of Bauwer Light (in two layers of 40mm) we would improve U value to o.35 due to thermal performance of Bauwer and it's light hardened density.

Bauwer application is seamless and breathable (vapour permeable) therefore the real thermal performance is the same as declared. It is not always the case in alternative insulation systems when real thermal performance is compromised vs declared due to heat loss through "bridges of cold" or heat losses in the non breathable systems due to the excessive ventilation.

On the top of thermal performance, Bauwer delivers a significant £ savings per m2, due to the fact that you need less product to cover the area, as Bauwer is light weight and when it is mixed with water, higher volume of render is achieved.

Who the hell puts 80mm of render on a wall anyway! I've never seen that. What's the u value based on 20mm of traditional vs your gear?
 
Who the hell puts 80mm of render on a wall anyway! I've never seen that. What's the u value based on 20mm of traditional vs your gear?

Thanks for the question, assuming wall U value at 0.60 (example above), 20mm traditional sand and cement render would reduce U value only to 0.594 while 20mm of Bauwer Light would improve U value to 0.50
 
Who the hell puts 80mm of render on a wall anyway! I've never seen that. What's the u value based on 20mm of traditional vs your gear?

You are right, 80mm application thickness of transitional render sounds daft. Same as using traditional render for the wall insulation; it does not make too much sense, does it?

Yet it works differently with Bauwer insulated render. Due to light weight of Bauwer (just 280kg/m3, thank to Perlite and Vermiculite) you could reach a thickness of up to 100mm by applying Bauwer Light in two layers 40mm to 50mm each. Actually Bauwer application thickness is not limited to 100mm with more application layers..

It is a common practice to use wall insulation system of 100m thickness, for example expanded polystyrene or phenolic boards. Yet those wall insulation products significantly reduce vapour permeability and therefore potentially could lead to the dump related issues.

We used 80mm thickness comparison with a traditional render just to illustrate the difference in U value of Bauwer vs a traditional render.
 
There's loads of these products out there already
Mike Wye sells one called cork render or something.it has perlite in it
It's designed for cob/stone buildings
I've heard mixed reviews tbh
 
You are right, 80mm application thickness of transitional render sounds daft. Same as using traditional render for the wall insulation; it does not make too much sense, does it?

Yet it works differently with Bauwer insulated render. Due to light weight of Bauwer (just 280kg/m3, thank to Perlite and Vermiculite) you could reach a thickness of up to 100mm by applying Bauwer Light in two layers 40mm to 50mm each. Actually Bauwer application thickness is not limited to 100mm with more application layers..

It is a common practice to use wall insulation system of 100m thickness, for example expanded polystyrene or phenolic boards. Yet those wall insulation products significantly reduce vapour permeability and therefore potentially could lead to the dump related issues.

We used 80mm thickness comparison with a traditional render just to illustrate the difference in U value of Bauwer vs a traditional render.
How long does it take to dry before decoration at 80mm? Why don't you incorporate a mesh in your system? How much more expensive is it to other backing plasters? I am only talking internally cheers
 
Y
There's loads of these products out there already
Mike Wye sells one called cork render or something.it has perlite in it
It's designed for cob/stone buildings
I've heard mixed reviews tbh
yes I use to deal with Mike Wye 14 years ago, when I did marble plastering, good guy
 
There's loads of these products out there already
Mike Wye sells one called cork render or something.it has perlite in it
It's designed for cob/stone buildings
I've heard mixed reviews tbh

Hello Bobby, thanks for your comments. I agree, there are at least 31 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://porto.polito.it/2538711/1/Barbero_Dutto_Ferrua_Pereno_E_B.pdf

I know too many details to read …. but my point is that Bauwer rates at the top of this comprehensive comparison, due to light density (280kg/m3), reasonable true thermal performance (0.068W/m*K), good application characteristics (manual and auto spray friendly) and a low price per square meter@10mm thickness vs. other alternatives (insulated renders or traditional backing plasters).

In regard to the friendly application process, could you please see below an example of a review from a professional installer:

“The products have been trialed you will be happy to hear. The reports back were very short but highly positive. They 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 the installer stated that it 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 their opinion and they stated that they would have no problem with undertaking a larger area with the product”

More reviews to be available shortly, as many people from forum ordered Bauwer samples, which they received last week. More samples being sent this week as well…those reviews might be not all “singing and dancing” but Bauwer is a reasonably good product, which is installer friendly and with a good quality/performance characteristics and at the good price as well.
 
ecoCORK Insulating Render/Plaster (NHL): Secil


Hello Bobby, thanks for sharing! I looked briefly at this product at: https://www.mikewye.co.uk/product/secil-ecocork/ and the product looks good too me with a number of positive characteristic.

Could you please see below a few comments on the comparison with our Bauwer Light:

Density: Bauwer Light is 2.5 lighter, 280kg/m2 vs. 700kg/m2

Thermal performance: Bauwer Light is 50% better at 0.068W/m*K vs 0.1 W/m*K

Output from one bag: 25% better again from Bauwer (25 liters) at 2.5m2@10mm vs 2m2@10mm (20 liters)

Price per 1m2@10mm: Bauwer is cheaper again by 25% (at the reasonable order)

Delivery: Included in the price of Bauwer, excluded for a comparison product
 
How long does it take to dry before decoration at 80mm? Why don't you incorporate a mesh in your system? How much more expensive is it to other backing plasters? I am only talking internally cheers

Hello and thanks for your questions!
The exact drying time would depend on the temperature and humidity, but the recommended ranges are as follows:
Bauwer Standard or Light, drying time before applying Bauwer Finish or an alternative decorative vapour permeable finish:

Application thickness 10mm to 25mm: 4 to 12 hours
Application thickness 40mm to 50mm: 24 to 72 hours

Bauwer Finish:
Thickness 3mm-4mm: 4 to 24 hours before painting over

Why don't you incorporate a mesh in your system?
Normally mesh is required for external application or the windows areas internally.

How much more expensive is it to other backing plasters?
Bauwer is considerably cheaper if you look at 1m2 output at 10mm vs traditional backing plaster due to Bauwer’s light weight. On the top of cost savings you would get the benefits of thermal insulation, sound absorption as well as dehumidification properties.
 
Hello and thanks for your questions!
The exact drying time would depend on the temperature and humidity, but the recommended ranges are as follows:
Bauwer Standard or Light, drying time before applying Bauwer Finish or an alternative decorative vapour permeable finish:

Application thickness 10mm to 25mm: 4 to 12 hours
Application thickness 40mm to 50mm: 24 to 72 hours

Bauwer Finish:
Thickness 3mm-4mm: 4 to 24 hours before painting over

Why don't you incorporate a mesh in your system?
Normally mesh is required for external application or the windows areas internally.

How much more expensive is it to other backing plasters?
Bauwer is considerably cheaper if you look at 1m2 output at 10mm vs traditional backing plaster due to Bauwer’s light weight. On the top of cost savings you would get the benefits of thermal insulation, sound absorption as well as dehumidification properties.
Is that right that you can paint it in 4 to 24 hours? Is this a specialist paint or a normal emulsion? I like the sound of it and may have a job that is ideal, let's say you stripped a normal three bedder back to brick, say an Edwardian type terrace. Once BC are involved they will want it to come upto the new U values so going back to the Same can't be done, unless you upgrade something else around the house to increase it that way (all depends on the building inspector and where you live). So if I used your products It should increase the U value compared to the last backing. Would it be enough to reach the U value requires on its own? I know there's loads of veriables but we can start here :) cheers
 
So if it's a inch thick it could be dry in 12 hours?:frenetico:

Hello Bobby, well spotted, my typo! I meant days not hours, eg:

Bauwer Finish:
Thickness 3mm-4mm: 4 to 24 days before painting or decorating over, subject to temperature, humidity and type of decoration, paint.
 
Is that right that you can paint it in 4 to 24 hours? Is this a specialist paint or a normal emulsion? I like the sound of it and may have a job that is ideal, let's say you stripped a normal three bedder back to brick, say an Edwardian type terrace. Once BC are involved they will want it to come upto the new U values so going back to the Same can't be done, unless you upgrade something else around the house to increase it that way (all depends on the building inspector and where you live). So if I used your products It should increase the U value compared to the last backing. Would it be enough to reach the U value requires on its own? I know there's loads of veriables but we can start here :) cheers

Hello and thanks for the questions!

No, you cannot paint in 4 or even 24 hours over Bauwer Finish. At least 4 days are required before painting, subject to temperature and humidity. You could still apply Bauwer Light one day and over coat with Bauwer Finish the next day, subject environment conditions, which impacts curing timing.

Would it be enough to reach the U value requires on its own?
It is a simple question, but the answer is really it is depends, as you rightly said loads of variables there...

If you got a wall with a cavity, you can hit U values with a reasonable Bauwer application thickness on its own, improving thermal, acoustic and comfort properties of a building. For a solid wall I’d suggest using Bauwer Light, in order to level and insulate the walls, before applying mineral wool, for example Rocksilk EWI Slab (external application, lower thickness due to Bauwer insulting, leveling layer). This is more expensive, but a breathable solution to achieve U values without introducing an “airplane cabin” scenario, when your walls become sealed with a cheap phenolic or other none vapour permeable low cost boards, introducing dump issues, ventilation issues, etc. It is also possible to achieve U values with Bauwer on its own, with a solid wall scenario as well, but application thickness would be higher, up to 20cm which could be split between external and internal application, let's say 15cm and 5cm.

You can also have a case for relaxation of U-values requirements with your building inspector if:
1) the payback term is longer than 15 years (eg. cost of expensive solution to achieve U value is 15 times higher vs. annual energy saving from that solution)
2) the usable floor space is reduced by 5% or more (due to internal insulation taking space)
3) the work is not otherwise technically or functionally feasible (exterior façade requirement for example).

Many houses we see around us were designed and built before energy rocketing prices. As a consequence, those buildings use more energy than their modern equivalents and it is expensive to upgrade them to new U value standards. Bauwer insulation is a quality solution to make your property warm and healthier to live in, without spending a fortune.

Also few comments on triggers, which might require an improvement of U values to the new standards:
1. cladding or rendering the external walls
2. dry-lining the internal walls
3. stripping old render down to expose the brisk wall

The requirements are triggered when the area to be refurbished and renovated is greater than 50% of the surface area, or 25% of the total building envelope area. As I mentioned earlier, you could argue for a relaxation of those requirements with a building inspector, if solution to achieve those requirements is very expensive or non-breathable, vapour permeable or takes too much internal space, etc.
 
Nice one cheers is it more environmentally friendly compared to other products? I ask because in some cases people prefer it.
 
Nice one cheers is it more environmentally friendly compared to other products? I ask because in some cases people prefer it.

There are many insulation products on the market. Just because it’s saving energy doesn’t makes it necessarily environmentally friendly. The climate impact of insulation products is also different. Some, however, also have health aspects. Materials which contain glue might contain formaldehyde which can cause indoor air pollution with potential health problems. The net climatic effect of insulation products is the sum of the carbon emissions associated with the energy used in manufacturing, minus the emissions saved due to energy saved as a result of the using insulation.

Eco-friendly Bauwer Insulation is based on naturally occurring volcanic minerals called perlite and vermiculite and therefore has excellent environmental and health credentials.

Perlite and vermiculite do not emit any odours and are resistant to chemical and biological effects of environment. Bauwer insulation contains no organics, chemically inert, biologically stable, non-toxic, harmless and safe. Moreover perlite and vermiculite minerals are used in water filtration and horticulture industries as well, due to its lightweight structure and non-toxic, inert nature.

You could find perlite sustainability fact sheet as well as health aspects on Bauwer website at:

http://bauwer.co.uk/templates/Default/images/Sustainability_Factsheet_Perlite.pdf
http://bauwer.co.uk/templates/Default/images/Health-Effects_Perlite.pdf

Bauwer Insulation also enhances the breathability of wall structure and hence its ability to withstand fluctuations in internal and external humidity which helps preventing any damp or mould issues.
 
Ha ha my guess is they will say yes to that question

Hello Bobby,
You are right; the answer is yes.

Would you like to try our free Bauwer insulation samples? We could send you two bags, internal and external gear, sufficient to cover 2.5m2 @ 10mm thickness each, for your review and product appraisal. Many thanks in advance.

Regards, Alexander.
 
There are many insulation products on the market. Just because it’s saving energy doesn’t makes it necessarily environmentally friendly. The climate impact of insulation products is also different. Some, however, also have health aspects. Materials which contain glue might contain formaldehyde which can cause indoor air pollution with potential health problems. The net climatic effect of insulation products is the sum of the carbon emissions associated with the energy used in manufacturing, minus the emissions saved due to energy saved as a result of the using insulation.

Eco-friendly Bauwer Insulation is based on naturally occurring volcanic minerals called perlite and vermiculite and therefore has excellent environmental and health credentials.

Perlite and vermiculite do not emit any odours and are resistant to chemical and biological effects of environment. Bauwer insulation contains no organics, chemically inert, biologically stable, non-toxic, harmless and safe. Moreover perlite and vermiculite minerals are used in water filtration and horticulture industries as well, due to its lightweight structure and non-toxic, inert nature.

You could find perlite sustainability fact sheet as well as health aspects on Bauwer website at:

http://bauwer.co.uk/templates/Default/images/Sustainability_Factsheet_Perlite.pdf
http://bauwer.co.uk/templates/Default/images/Health-Effects_Perlite.pdf

Bauwer Insulation also enhances the breathability of wall structure and hence its ability to withstand fluctuations in internal and external humidity which helps preventing any damp or mould issues.
Excellent reply :)
 
Hi There.

I am very intrested in this product and would like some sample bags if that's ok. Have you also got a number I can get you on for a chat.

Thanks.

Gary

Hello Gary,
No problem, if you just could confirm the delivery address - we'll arrange a couple of bags tomorrow for your evaluation.
Also I have just emailed you the Bauwer information and my contact details. Talk to you tomorrow.

Regards,
Alexander.
 
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