Remember to seal all the gaps between the skirting board and the floor to prevent draughts.
How to insulate the floor of a add on room.
If you have a three season room adding an extra layer of insulation to accessible areas can make a big difference.
When insulating a bonus room floor you ll usually be working from below.
If the area of the heated bonus room above the garage is smaller than the area of the garage ceiling you ll need to install blocking between the joists to provide an air barrier where the floor insulation stops.
Locate the blocking under the kneewalls.
And yes there are health concern issues associated with it.
But if you want the absolute best insulation value there is no approach to insulating a bonus room that tops spray foam insulation.
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.
Top tips for insulating a floor.
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.
You may even be able to warm it up enough to make it a room for all seasons.
Ensure you insulate thoroughly but avoid squashing insulation material as this will seriously compromise its effectiveness.
Best option insulate your bonus room with spray foam.
This needs to be done before a fitted carpet is laid as it will not be possible afterwards.