I was really surprised to see all the brand new insulation completely.
Insulating floor of 3 season porch.
If it is above grade winter drafts will make the room too cold to use no matter how well the walls and ceiling are insulated.
However doing so will prevent cold air from seeping into the porch and may allow you to use the porch for a few weeks longer before winter arrives.
How to insulate a sunroom or 3 season porch.
This can be stapled up between the floor joists.
Use a vapor barrier to keep your floor above free from condensation caused by the new insulated area.
In terms of energy savings there isn t much benefit to insulating an unheated porch.
A contractor i hired to insulate under my 3 season porch floor has used regular pink insulation r 27 but it has fallen out four times so far now half of it is on the ground.
If you re looking to extend the use of your three season porch or even turn it into an all season porch you ll need to look at adding insulation.
That would include the ceiling walls and underneath the porch floor.
Adding insulation batting to the walls and floor of your three season porch can extend its usefulness during cold weather.
The job of insulating the floor is easier if there is room to crawl underneath but if there isn t it can still be done.
We just had a 3 season room built in place of our deck.
Roll out the fiberglass insulation sheets between the joists facing side up making sure it is snugly in place.
Insulating the floor is an important step in porch conversion.
After insulation is installed no poly vapor barrier only kraft faced so that it is semi permeable go back with 3 4 t g advantec then your floor then baseshoe.
I looked under there today to see if i could come up with an idea for closing the gap to animals and debris.
Enclosed but uninsulated sitting areas are known as three season porches but if you live in a northern state cold weather can reduce that to two or even one and a half seasons.
Basically you should be thinking about insulating the roof floor and walls to ensure the maximum benefit.