A deck floor is best insulated with paper-backed batts of fiberglass insulation before the deck is installed. If the deck has already been put in place, it is too late to use the rolls of fiberglass, but if there is a ceiling installed on the underside of the floor joists you can use loose fill or blown-in insulation.
Installing Batts of Insulation
Floor joists that are placed 16 or 24 inches on center can be filled with paper or foil backed batts of fiberglass insulation. This material comes in large compressed rolls that pop open and expand when you cut the tape seals. Always buy the material in the same thickness as the floor joists (5 1/2, 7 1/2, 9 1/2 or 11 1/2 inches) to get the most insulation value. When you install the fiberglass material you should be wearing a dust mask, eye goggles, gloves, a hat and long-sleeved shirt and pants to keep the irritable fiberglass from contacting your skin. Use a staple gun with long staples to attach the paper backing to the sides of the joists. The paper backing should never be attached to the top of the joists. Just staple the backing on the sides as close to the top as you can and don't scrimp on staples.
If a sheetrock or tongue and groove ceiling has been installed on the underside of the deck joists you can install loose fill or foam insulation by drilling holes through the subfloor decking and filling each space with insulation. Make sure the ceiling is installed properly and never drill through the finish floor to do this task. Also check the chemical composition of the spray for undesirable contents such as formaldehyde.
- Photo Credit Jupiterimages/Photos.com/Getty Images
How to Insulate a Floor
Insulating your floors will reduce drafts and your energy costs. This do-it-yourself job is fairly easy if you are putting in a...
How to Insulate a Sunroom
Your sunroom is could be sitting empty most of the time, because it's too hot in the summer and too cold in...
How to Install Insulation Under a Floor
Buying insulation in rolls is the most economical to insulate your floors. When choosing installation, it is best to choose a type...
How to Insulate Your Basement Floor
Since there is a significant amount of heat loss through a non-insulated basement floor, it’s almost impossible to maintain a comfortable environment...
How to Make a Sunroom From a Deck
When looking to invest in a home-improvement project, many people choose to build a sunroom. A sunroom provides a great return on...
How to Insulate a Flat Roof
This project will make your flat roof energy efficient and last for years to come. It get a little messy, but well...
How to Insulate a Concrete Floor
Insulating a concrete slab reduces heat loss and helps to moderate the temperature of a home, according to the U.S. Department of...
How to Insulate a Porch Floor to Make a Sunroom
When you convert a porch into a sunroom, you'll get the most usage from the new room if you've taken steps to...
How do I Insulate a Sunroom With a Raised Floor?
Having a sunroom as part of your home means your family can enjoy a bug-free outdoors for a longer period of time...
How to Convert a Deck Into a Sunroom
A sun room offers homeowners a place to enjoy nature where it may not be ideal to go outside. It's a great...
The Risks of Phenolic Foam Insulation
Phenolic foam insulation used to be available in board form, but today is only sold as a type of foamed-in-place insulation. It...
How Do I Insulate an Unheated Porch?
In terms of energy savings, there isn’t much benefit to insulating an unheated porch. However, doing so will prevent cold air from...