Originally Posted by indignatz
No water pipes but there is some duct. The addition contains a bonus room and a bedroom. I'm not sure how cold it gets, I've only been down there in the summer, but the floors of the rooms above it feel colder than the rest of the house.
Im in Ontario and I have a winterized cottage that has a complete crawl space.
It has 6 mil poly laid on the ground and held in place with stone weights.
I insulayed the inside of the concete blocks with R12 ROXUL insulation. ( We are lucky here in Canada that this insulation is available. It doesn't seem to be avail. in the US)
The insulation is held in place with insulation mounting pins. These pins have a perforated base and a gob of construction adhesive is placed on the surface and is pressed onto the concrete as required.
Once the adhesive has set up, the Roxul bats are pressed onto the pins. Then 6 mil poly laid over the top and pressed onto the pins as well.
Spring keepers are then pushed onto the pins to hold the plastic and insulation in place.
These pins are very sharp, so I bent the ends back in towards the wall to avoid accidental contact.
Roxul is is the ideal insulation as it is non-absorbant,and is very reasonably priced.
In Canada the crawl space should be conditioned. In the summer A/C will reduce the humidity and of course in the winter keep the floors warm.