Blown Insulation
Blown-in insulation, also called loose fill insulation, is a type of material that is blown into wall cracks, attics, and other difficutl to reach spots using special equipment. Unlike traditional batt or roll insulation, blown-in insulation consists of loose, small pieces that fit into awkward spaces and fill gaps well. This makes it great for adding insulation to existing homes without major work.
Materials Used:
- Cellulose: Made from reused paper treated with fire blocking, this is an environment friendly choice.
- Fiberglass: Made from molten glass spun into fibers, fiberglass is a common and affordable option.
- Mineral Wool: Made from minerals like silica or stone, mineral wool is fire resistant and provides good insulation.
How it’s Installed:
- A blower machine loads the insulation material.
- The material is blown through a hose into the desired area.
- The loose material fills cracks and molds to the space, creating a dense, insulating layer.
Loose fill insulation is best for tight spaces, or if your attic already has a layer of insulation that needs topping off. Wood joists allow air to move through the spaces, so they must be covered with insulation. If you choose loose fill insulation, this will take a special machine to install it.
Advantages of Insulation:
- Better Coverage: Blown-in insulation reaches tight spots and around obstacles for a more complete layer.
- Air Sealing: It helps block air leaks and drafts, improves energy efficiency.
- Quick Installation: It is usually faster to install than traditional batts.
- Ideal for Retrofits: Perfect for adding insulation to existing homes without major tear down.
Choosing the Right Material
To choose the right type of blown in insulation, think about the material heat resistance (R-value), how well it handles fire and water, and the cost. Common options include cellulose, fiberglass, and mineral wool. Cellulose is good for sound proof and environment friendly. Fiberglass has high heat resistance. Mineral wool resists fire and also blocks sound.
- Building Type:
Consider where you’ll install the insulation—attic, walls, or crawl space—and if it’s for new construction or an update.
- Budget:
Cellulose usually costs less than fiberglass or mineral wool.
- Installation:
You can do it yourself, but for walls or tricky spots, hiring a pro is a good idea.
- Moisture and Pest Control:
If your area is humid or has pests, pick insulation that resists water build up and pests.
Extra Tips on Insulation:
- R-Value:
This number shows how well insulation blocks heat. Higher is better.
- Air Sealing:
Seal any gaps before adding insulation to get the best results.
- Professional Advice:
Talk to an insulation expert or do some research to find the best option for your project.
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