Martin Marchewka
Hi, ideally you would have to fit a small lintel above the hole to support the weight of the bricks, If you look on the existing brick work under the render, there should be a thin metal lintel above it. You could fit something simillar above the new hole, the new lintel or steel plate needs to overlap on to each side of the new whole around 10/15cm each side. Regards Martin Ms interiors
