Consider foam insulation especially if you have an older home. The ease with which it can be installed, as well as its ability to conform to the unusual shapes a vintage home sometimes has can make it an easy choice. Insulation is the best way to keep your home warm and your energy costs low in the winter time. With foam insulation, a blower rental, and a few hours of time you can make a significant difference in your monthly energy bill. The house is noticeably warmer after foam insulation in the walls.
Foam insulation has many advantages over the other type of housing insulation and is becoming increasingly popular. Some of the biggest benefits of the foam insulation is quieter, cleaner installation, fire safety, healthier and eco friendly. No longer drafty and cold in the winter and in the summer it has stayed considerably cooler. The major benefits of closed cell foam are numerous. For one, you only need 3 inches in a wall and 5 inches on the ceiling to meet all your code R-values. When using this product, your building is air tight. The only air that comes in is the air you want to come in making your building extremely efficient; from 30-50% more efficient than fiberglass and 10-25% more efficient than wall spray or dense pack cellulose. Now before you go running to the phone, there are of course some major drawbacks. The first is price. It is very expensive at around $4.00 per square foot. It is not uncommon to have a price tag of $13,000 or more for an average house of 1500 square feet with 8 foot ceilings. Generally you see your savings within 5-7 years or less depending on your lifestyle.
Most houses have an air gap between inner and outer leaves of the brickwork that make up the external walls. Other insulation for houses include central heating insulation, double or trible glaze windows, etc. It can normally be applied from the outside through small holes, drilled in the wall by technicians. The material is then injected through the holes, filling the cavity. The holes are then filled in to make as perfect a match as possible with the existing wall.