Hellomy Brrrr house spends high utility bills($400 per month in Easten canada) and I'm thinking putting 2 inch foam insulation under siding when i install new siding.

Most dramatic, as a plumber was working in the basement correcting the furnace vent, the brick underside of the fireplace hearth came crashing down.

Fire-resistance-rated wall assemblies shall extend to and be tight against the exterior walls; and shall extend from the foundation, through the attic space and to the underside of the roof deck.

I would also consider closed cell foam insulation on the joists and underside of the subfloor.

I'm not sure what their capabilities are, but if they can bore some blind-holes on either side of the crack, they can probably tie both sides of the table together with clamping hardware (all on the underside of the table).

But, I don't like to seal the underside of decking.Don

Environmental moisture vapor, within the air or being released from the ground, can easily collect on the underside of flooring.  

Additionally, 14B-2-202 Defines a Basement as:“Basement: A story that is not a story above grade plane.”Additionally, 14B-6-605 notes:“Except in buildings of group R-5 occupancy, floor construction over basements shall have afire-resistance rating of not less than 1 hour.”This means that if you are Very close to missing the 7'-0" mark, you can leave the ceiling unfinished and measure from the floor finish (a thin LVT or Vinyl tile would be recommended) and the Underside of the Joist.Note: Rooms containing gas-fired appliances (i.e.

There is insulation on the underside of the concrete roof slab (confirmed from inside one of the units - so given that, I would not be surprised if they also sprayed the top of it, or laid down a membrane, for waterproofing before putting down the shingles.

.#5 could come from condensation forming on the under side of floor due to lack of ventilation in the crawl space.