Filling Holes In Exterior Walls

The polyfill expanding foam filler can expand to twice it s size.

Filling holes in exterior walls. Wet the wall and apply patches of plaster undercoat each side of the corner using a plasterer s trowel. 1 use a stiff brush to clean out the hole. Caulk is a substance designed to seal a joint between two surfaces and to fill small holes. Fixing small holes in stucco here is how to repair a small hole less than 6 inches wide.

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. Sweep the surface and inside of the hole with a paintbrush or small broom to remove the dust. Brush the surface and inside of the hole with a stiff wire brush to remove loose bits of mortar.

For the exterior i either use sealant or external grade filler that won t crack shrink for slightly larger holes. Fill larger voids with the foam sealant then apply the cement to provide a natural finish to the surface. 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. Remove loose material from the hole in the wall by probing it with the tip of a.

If the hole is too small for a brush use an awl or nailset to scrape out any loose material. 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. The acrylic paint last years in the tube unlike coloured sealants fillers. Build up the undercoat plaster then scrape it back.

Use a combination of foam sealant and cement stucco to fill large gaps and voids. I m going to show you how to use expanding foam filler to fill deep holes or gaps in walls. You will then apply caulking into the hole polyurethane is recommended. Cracks and holes in any surface collect water which causes paint to peel.

The process at a glance.