The InvisaBoard was originally designed for a stud plaster wall installation. Masonry installations included but are not limited to brick and concrete are possible.

A wall coating will be required whether it be a render or preferably solid plaster, so it can match the texture of the InvisaBoard door.

The wall coating depending on its finished thickness will determine the installation depth of the InvisaBoard mounting box. ~~ if in doubt recessed a little more

The mounting box will have to be recessed fully into the masonry and fixed back.

With the InvisaBoard design a minimum of 10mm is required from the face of the mounting box to finished face of the door – or door beading. I would aim for 15mm to be safe.

The 10mm minimum spacing between the mounting box and door frame is essential as the breakers will foul on the rear of the door.

This is where the wall coating thickness as mentioned above comes into play as the coating will be placed on the face of the masonry & mounting box and be installed between the mounting box and the door frame beading. The actual wall coating will be a few step process with the door frame with the beading being installed between coats.

So if the wall coating is 5mm thick, the mounting box will have to be recessed and rebated an additional 5mm back. If in doubt rebate an extra 5mm as we can have up to 25mm from the mounting box face to the door beading.

HOT TIP – The mounting wings on the mounting box may be cut down to reduce the rebate size.

 

Alternatively to this process- the Surface Fit door kit can be used which will achieve a nearly true flush look, as it actually sits on the wall coating surface, as per below image.