Filling Holes In Exterior Walls

The process at a glance.

Filling holes in exterior walls.

The polyfill expanding foam filler can expand to twice it s size. Build up the undercoat plaster then scrape it back. Sweep the surface and inside of the hole with a paintbrush or small broom to remove the dust. Step 2 press the beading into position allowing the plaster to squeeze through the mesh.

Wet the wall and apply patches of plaster undercoat each side of the corner using a plasterer s trowel. Step 1 start by cutting the expanded metal corner beading to the right length with a hacksaw then paint the cut ends with metal primer to seal them. An ideal patch to use for both purposes is hydraulic cement which expands to fill cracks and holes as it dries. You can also blow compressed air into the hole to remove the dust.

The acrylic paint last years in the tube unlike coloured sealants fillers. Brush the surface and inside of the hole with a stiff wire brush to remove loose bits of mortar. However i also mix in a little acrylic colour i ve bought that s a good match to the brick. Fill larger voids with the foam sealant then apply the cement to provide a natural finish to the surface.

Caulk is a substance designed to seal a joint between two surfaces and to fill small holes. Cracks and holes in any surface collect water which causes paint to peel. If the hole is too small for a brush use an awl or nailset to scrape out any loose material. Fixing small holes in stucco here is how to repair a small hole less than 6 inches wide.

To repair a small hole in stucco you will basically want to clean the hole with a small wire brush and then blow out the hole using compressed air or by blowing into the hole. Filling cracks and holes with caulk in your home s trim and siding before painting not only makes the paint job look better but also makes the paint last longer. I m going to show you how to use expanding foam filler to fill deep holes or gaps in walls. 1 use a stiff brush to clean out the hole.

Use a combination of foam sealant and cement stucco to fill large gaps and voids.