external render on concrete board?

slavetothegrind

Has anyone experience of rendering external cement board?

There are several multilayered silicone based solutions sprayed on at high cost.

I was wondering if a relatively fine steel mesh stapled to the board would take a standard render?

This is for a side addition to my house lean to style which i was thinking of going timber frame with if the above is possible.

Thanks.

Poor Uncle Tom

If you use riblath/expanded metal there should not be a problem.

cork1

if your using the cement board KNAUFF make a special mesh and and adhesive for the mesh

barryi200

slavetothegrind wrote: »

Has anyone experience of rendering external cement board?

There are several multilayered silicone based solutions sprayed on at high cost.

I was wondering if a relatively fine steel mesh stapled to the board would take a standard render?

This is for a side addition to my house lean to style which i was thinking of going timber frame with if the above is possible.

Thanks.

look in to Aquapanel by Greenspan - cementatious board and render system... they will stand over...it has all the relevant certs and the like etc... Plywood and rib lath is and standard render in large areas etc...is not advisable

CJhaughey

My house is rendered with STO silicate plaster on Blu-clad board.

The first application is the base coat STO levell or Armat, with a fibreglass mesh pushed into it and then trowelled over to level it.
The next coat is a silicate coloured textured coat that is applied to the size of the grain.

Don't use metal mesh it rusts after a while and the whole job will be a disaster, you have to use an inert material to reinforce it.
The corner beads are also glass fibre and plastic.