Installing interior insulation involves carefully placing the material into wall cavities and securing it properly. A key step is gently inserting the insulation into the wall cavity, taking care not to compress it. Most wall insulation products come with a stapling flange on the facing, which should be held against the inside edge of the stud to secure the insulation in place.
Getting Started with Interior Insulation
Before you begin insulating, ensure the wall cavities are clear of debris, electrical wiring is run, and any necessary vapor barriers or air sealing measures are considered based on local building codes and climate. The type of insulation (like fiberglass batts, mineral wool, or rigid foam) will influence the specific installation method, but the general principle of fitting it correctly remains vital.
Step-by-Step Installation (Focusing on Faced Batts)
For faced insulation batts, which are common for interior walls, the installation process involves a few key steps:
- Preparation: Measure the width and height of the wall cavities. Cut insulation batts to size if needed, ensuring a snug but not compressed fit.
- Gentle Insertion: Carefully slide or push the insulation batt into the wall cavity. As mentioned in the reference, you must "gently into the wall cavity. Taking care not to compress the insulation." Compression reduces the insulation's effectiveness (its R-value).
- Securing with Flange: "Most wall products have a stapling flange on the facing. Hold the flange against the inside edge of the stud." This flange is typically attached to the paper or foil facing on one side of the batt. Use a staple gun to secure the flange to the face or side of the studs, ensuring the insulation stays in place and the facing creates a continuous barrier (often serving as a vapor retarder depending on the product).
Tips for Proper Installation:
- Always wear appropriate safety gear, including gloves, eye protection, and a dust mask or respirator.
- Ensure the insulation fills the cavity completely without gaps, especially around electrical boxes, pipes, or other obstructions. Cut and fit pieces carefully around these elements.
- Avoid leaving voids, as these can allow air movement and reduce thermal performance.
- Don't over-compress the insulation, particularly when fitting it into tight spots or stapling the flange.
By following these steps, particularly focusing on the gentle placement and correct use of the stapling flange as highlighted, you can effectively install interior insulation.
