Do I need to Use A BBA Certified Render Board

[Triassic]

I’m never sure about BBA certification, should I be using products that are certified, or can I just use the most cost effective product?

 

In particular, there are plenty of render boards out there which don’t appear to be BBA approved, would I matter if I used an unapproved board ?

[nod]

You can use any cement board 

They are all the same 

As you point out Only difference is cost 

[Mr Punter]

I recently received an email from Premier Guarantee warning about the use of MGO boards.

 

The type of board you choose will depend on what the render system manual specifies. If you are selecting non-BBA, check with your warranty provider and BC. I would choose a BBA system and a board like Bluclad.

[lizzie]

We had to use BBA cert  board for our render.  Prem Gtee wanted it.  In the end we went for the alumasc system one contractor to do boarding and render and a guarantee from Alumasc.  Pricey though.

[nod]

As long as it has mesh reinforcement on the base coat

It will be fine 

[Triassic]

As I’m doing the rendering myself and don’t need a guarantee, so the cheapest board and render mesh  is the order of the day !

Edited March 28, 2019 by Triassic

[Russell griffiths]

I have also been warned to keep an eye on mgo boards. 

[Triassic]

Isn't it wonderful, you search for BBA certified render board and you still get loads coming up that arent!

 

Makes you wonder how many people buy render boards thinking they're certified and they're not!  One on Ebay displays the BBA logo next to the product, but when asked for a copy, all I get is silence!

[ADLIan]

The BBA logo should include a number, normally in this format 'Certificate No. ??/????' at the bottom. You can check on the BBA website that the certificate is real and is valid. The packaging on the product will also include the BBA logo and number. Once outside the packaging however very difficult to prove if BBA certified or not - if the boards are printed with manufacturer details, shift codes etc this can help traceability.

 

The BBA will take action against abuse of the logo but I imagine with the growth of Ebay (and similar) it's almost impossible for them to follow every case.

[Triassic]

Has anyonr used Magply boards for their rendering, according to their web site they’re approved for use with Krend.

[Triassic]

With all the talk about expansion joints and ‘pillowing’ on the other thread, I was wondering if anyone has used Magply Render Board and what they thought of it?

 

Priced at 2.4 x 1.2 x 12mm thick £27.71 ex vat.

 

https://www.magply.co.uk/applications/render

Edited April 4, 2019 by Triassic

[Mr Punter]

Not used Mayply but as discussed earlier I have been cautioned against use of Magnesium Oxide boards. I would go BBA certified.

[Triassic]

It’s one of the boards approved by Krend for use with their system, It appears to meet lots of standards

 

Thermal Conductivity: 0.19 W/mK
Fire Classification: Class 0 Euroclass EN13501* A1 (Non-Combustible)
Reaction to Fire: Passed BS EN 1716 Reaction to Fire* Passed
Appearance: Solid flat sheet board
Colour & Odour: White, Odourless Change of State None
Vapour Resistance: Vapour Resistance 0.31 MNs/g (EN ISO 12572*)
Melting point: Melting point: 2400°C
Vapour pressure: EN ISO 12572: 2016 = 0.31 MNs.g-1.
pH level: pH level: 7.5
Solubility: Solubility: Insoluble in Water
Acoustic: 9mm Rw 28dB 12mm Rw 29dB 20mm Rw 31dB EN ISO 717-1:2013

 

 

Edited April 5, 2019 by Triassic

[PaulQ123]

See the Premier Guarantee advice on 30th May 2019 regarding use of Magnesium Oxide Boards https://www.premierguarantee.com/resource-hub/magnesium-oxide-board-technical-update/ 'In external framed wall constructions: The boards shall not be used as an external render board, or as a backing board for direct applied polymer, resin or masonry brick slips, unless they have specific approval for that purpose identified in the third party product approval certificate.'