Clifton St. | ICF walls

MRB contracting, Clifton St., ICF

21 Nov 2013 Clifton St. | ICF walls

Share on FacebookTweet about this on TwitterShare on Google+Email this to someone

In the last Clifton St. update we talked about the footings. Since then the team has been busy assembling the ICF blocks for the basement. Aside from a few days of heavy rain, the project has run quite smoothly.

MRB contracting, Clifton St., ICF

ICF stands for Insulated Concrete Forms. There are several key benefits to using ICF.

[list type=”check”]

  • ICF acts as a form for concrete, reducing the use of lumber normally used to form concrete walls
  • Minimal (if any) air leaks and significantly reduced heat loss
  • High insulation R-value
  • No thermal bridges due to the continues insulation
  • Better humidity regulation – especially important for a basement
  • Sound absorption

[/list]

 

MRB contracting, Clifton St., ICF

Each row of interlocking ICF blocks is reinforced with steel.

MRB contracting, Clifton St., ICF

The steel runs in a continuous loop around the wall with minimal 30″ overlap.

MRB contracting, Clifton St., ICF

The styrofoam blocks can be easily cut with a handsaw.

MRB contracting, Clifton St., ICF

The photo below shows the plastic webbing inside the blocks. The webing serves as a stabilizer and a placeholder for the steel bar.

MRB contracting, Clifton St., ICF

MRB contracting, Clifton St., ICF

MRB contracting, Clifton St., ICF

The excavation crew came back to connect the sewer lines.

MRB contracting, Clifton St., ICF

MRB contracting, Clifton St., ICF

MRB contracting, Clifton St., ICF

After the walls are complete, a system of scaffolding/bracing is erected. This scaffold will allow us to walk around the wall to fill the void with concrete. It also helps us straigthen the walls to ensure that everything is aligned perfectly before the walls become rigid with concrete.

MRB contracting, Clifton St., ICF

MRB contracting, Clifton St., ICF

MRB contracting, Clifton St., ICF

The ply on the corners is used to strengthen the joints for pouring concrete. Once the concrete is cured, all of the scaffolding and wood will be removed to ready for framing the 1st floor. In the coming weeks, we’ll be putting in a rain water cistern, and begin framing. We can’t wait!

MRB contracting, Clifton St., ICF