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Step 8 · Install Interior Trim and Finish

Measure and cut interior trim pieces (e.g., wood or composite molding) to fit around the new window frame. Secure the trim in place using finishing nails or adhesive. Fill any nail holes with wood filler and sand smooth. Apply paint or stain to match the existing interior decor. This step completes the interior aesthetic of the window installation.

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Step 8 · Install Interior Trim and Finish

Measure and cut interior trim pieces (e.g., wood or composite molding) to fit around the new window frame. Secure the trim in place using finishing nails or adhesive. Fill any nail holes with wood filler and sand smooth. Apply paint or stain to match the existing interior decor. This step completes the interior aesthetic of the window installation.

Videos for this step

Install Window Frame and TrimInstall Trim and FinishAttach Interior Trim

Tools and Materials

← Project

Window Installation

Step 8 of 8·45 min left

Inspect and Prepare the Rough Opening
30 minutes6 items
Apply Flashing Tape to Sill
15 minutes3 items
Apply Flashing Tape to Jambs and Head
20 minutes3 items
Position and Set the Window
25 minutes4 items
Shim and Level the Window
40 minutes6 items
Fasten the Window Frame
30 minutes4 items
Install Remaining Flashing and Sealant
25 minutes5 items
8
Install Interior Trim and Finish
45 minutes8 items
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