Rendering on timber frame

[deniss]

Hello Everyone,

I am new to your fantastic forum, so please accept my apologies of I make any mistakes of etiquette etc. I have built a timber framed extension with plywood sheathing that is intended to be rendered. My initial plan, based on discussions with my plasterer, was to have the render on an expanded stainless steel mesh, which in turn would be fixed to battens to leave an air gap between the render and the plywood. my Building inspector has been quite adamant that I need to leave such a gap. I would like to use a modern synthetic render, partly to exploit their waterproof/breathable qualities, and partly because I understand they are less likely to crack if there is movement in the timber frame. Looking at the products available on the internet, I haven't seen any mention of expanded steel mesh being used with silicone renders. Have any of you had experience with such an application, or should I be considering some type of renderboard instead of the mesh? Any advice would be much appreciated.

Many thanks

Denis

 

[warriorupnorth]

Aquapanel, forget the mesh @Runswithscissors will advise you

 

[warriorupnorth]

Oh and welcome to the forum Denis,

 

[Olican]

What a courteous intro, welcome Denis. As warrior said scissors is your man. Keep checking in, I'm sure you'll have a response soon

 

[Render Systems]

timber lath your extension put lafarge g tech aqua boards on then finish with thincoat acrylic system... forget metal lath

 

[plaster man]

It s render man well back

 

[plasterjfe]

Aye. As per the biilding regs for this type of build.

Ply your frame as done
Breather membrane
25mm treated vertical battens at 400mm centres
Render carrier board such as aquapanel
Polymer acrylic render direct to the carrier.

We install loads of this tou need the cavity and you need a decent flexible enough render to hold out onto this timber frames movement etc

 

[S a plastering]

Is hp12 ok on aqua board as a thin coat render then coloured top

 

[Arti]

EML is the future, brothers.........................:RpS_thumbsup:

 

[Runswithscissors]

Hi Deniss

Great, polite intro............. Welcome to the forum.

There are a few ways of rendering a timber frame, your plasterer is right using an EML and sand and cement render was the traditional way before the introduction of modern thin coat renders.

See the link in my signature (below) for a copy of the Knauf Aquapanel Exterior - render carrier boards system for TF and SIP systems - for viewing on line.

The Knauf Aquapanel Exterior has currently 13 approved render systems to choose options from, these are almost all thin coat systems and we will be able to put you in contact with specific people from our partners - if needed.

Feel free to conatct me directly on 07918766577, or dropping me a mail with your drawings and details to [email protected] and I will assist you further.

Good Luck

 

[Runswithscissors]

Is hp12 ok on aqua board as a thin coat render then coloured top

Hi Madmonk

Aquaboard is the GTEC board - it is the Gypsum based board - you can only put Parex onto that....

you can apply K Rend's HPX (plus mesh) and finish coat to the Knauf Aquapanel Exterior = Yes

Make sure you order the right boards!

Feel free to get in touch if you need any assistance

 

[S a plastering]

Hi Madmonk

Aquaboard is the GTEC board - it is the Gypsum based board - you can only put Parex onto that....

you can apply K Rend's HPX (plus mesh) and finish coat to the Knauf Aquapanel Exterior = Yes

Make sure you order the right boards!

Feel free to get in touch if you need any assistance

Ok pal

 

[plasterjfe]

Is hp12 ok on aqua board as a thin coat render then coloured top

hp12 is really a polymer render designed for masonry backgrounds, thats not to say it wont stick (you will have to ask krend if they will back it onto renderboard) but ideally you should use the proper gump, the thin coat adhesives have much more polymer than hp12

hpx on the other hand will do the job or hp14 as i am told by Krend

maite/LAC/SM700/etc will all do the job great