How to Install Carpet Stair Treads on Curved Stairs

Using a measuring tape, meticulously record the dimensions of each stair tread. For curved stairs, this involves measuring along the outer edge, the inner edge, and at the center point to capture the varying depth. Note any specific angles or breaks in the tread profile. This information is crucial for cutting the carpet treads to the correct size and shape.

For each stair tread, create a paper or cardboard template that mirrors its exact dimensions, including any curves and angles. This can be done by carefully tracing the shape of the tread onto the template material. For curved treads, it is essential to mark the different depths along the curve as well. These templates will serve as guides for cutting the carpet treads.

Unroll the carpet tread material and position your templates onto the back of the carpet. Carefully align each template with the carpet's backing and use a marker to trace the outline. Ensure that the grain or pattern of the carpet, if any, is oriented consistently across all treads. Using a sharp utility knife or heavy-duty scissors, cut precisely along the traced lines, following the curves and angles of the template.

Vacuum each stair tread to remove all loose dirt, dust, and debris. If there is any old adhesive or residue, use a scraper and an appropriate adhesive remover to clean the surface completely. For wood stairs, ensure the surface is smooth and free of splinters. If necessary, lightly sand any rough areas. The surface must be clean, dry, and smooth for proper adhesion.

Depending on the adhesive used (e.g., spray adhesive, carpet tape, construction adhesive), apply it according to its specific instructions. For spray adhesives, apply a light, even coat to the back of the carpet tread or the stair surface. For carpet tape, apply strips along the edges and potentially the center of the tread. For construction adhesive, use a caulk gun to apply beads. Ensure full coverage, especially along the edges, to prevent lifting.

Align the carpet tread with the stair tread, starting from the back or the nose of the stair and working your way down. Press the carpet firmly into the adhesive, smoothing out any wrinkles or air bubbles. For curved stairs, pay extra attention to ensuring the carpet conforms to the curve and is securely adhered along its entire surface, particularly at the edges and any tight curves. Use a seam roller or your hands to ensure maximum contact.

Ensure the edges of each carpet tread are pressed down firmly and adhered properly. If using a product that requires additional fastening, such as carpet staples or a tack strip along the riser, install them now. Carefully trim any minor excess carpet material that may be visible around the edges with a sharp utility knife for a neat and professional appearance.

Walk up and down the stairs, pressing on each tread to ensure it is firmly attached and there are no loose edges or signs of lifting. Check that all treads are aligned properly and present a consistent look. Remove any tools, excess materials, or adhesive residue from the stairs and surrounding areas. Vacuum the stairs to remove any stray carpet fibers or dust.