How to Repair Slate Siding

What You'll Need
Stone putty
Putty knife
Pry tool
Sandpaper, 200-grit
Replacement slate
Concrete mortar mixture
Grout mixture
Stiff bristle brush
Stone sealant
Nap roller

Slate siding is one of the most attractive options you can use for your home. Slabs of slate are laid over a layer of mortar on exterior walls. A grout mixture is used to secure the siding in place. You can get slate in various attractive colorsto create a unique color effect for your exterior. This material also enhances the aesthetic appeal of your home. Due to the exposure that exterior surfaces get, it is normal for wear and tear to set in with time. Should this occur to your slate siding, you want to make certain you repair it as soon as possible. When left unattended, the damage can become even more extensive, which necessitates costly repairs. In most cases, repair revolves around scratches, cracks and loose slate slabs. Follow the simple steps below to effectively tackle these types of repairs.

Step 1 – Inspection

It is a good idea to carefully examine your siding to identify the exact locations that are damaged. Take note of unsightly scratches, cracks and loose slate slabs. Mark these areas with a chalk.

Step 2 – Scratches and Cracks

Be sure to obtain stone putty that matches the color of your slate. This helps to create a uniform appearance after repairs are completed. Prepare the putty as per the instructions. Apply with a putty knife over the scratches and cracks. Spread out the putty and try to make it as smooth as you can. Allow the putty time to dry, about 1 hour.

Step 3 – Sanding

Use a 200-grit sandpaper to sand down the putty. Aim to attain the same level as the adjacent slate.

Step 4 – Loose Slate Slabs

Areas of siding that have some slate missing must be filled with the same stone. Use a pry tool to remove portions of slate in the damaged area. It is best to remove the entire slab and replace with a new slab. This helps to create a neater appearance on the surface. Brush away loose concrete and mortar with a brush.

Step 5 – Apply Concrete Mixture and Install Slate

Prepare some concrete mixture as per the instructions. Apply a thin layer onto the repair area with your putty knife. Don’t wait for it to set. Select a slab of slate that can fit securely in the area. Firmly press it into the space and allow the concrete mixture to dry.

Step 6 - Apply Grout

Prepare some grout mixture in a small bucket. Fill in the spaces around the newly installed slabs with some grout. Spread it evenly with a putty knife and allow it to dry completely. Use your sandpaper to smooth the area.

Step 7 – Apply Sealant

It helps if you apply a sealant on your slate siding. Obtain a natural stone sealant that is suitable for slate from a home improvement store. It guards the slate against the elements and also helps to keep your siding in good condition for longer. Apply the sealant over the entire siding so that it is uniformly protected.