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Foundations

  • Remodeling for Accessibility (Subscriber content)

    Recently my Chicago-based construction company renovated a second-floor apartment in a 19-story building to make it more user-friendly for disabled and elderly residents.

     
  • Permanent Wood Foundations

    Pressure-treated wood foundations (also known as permanent wood foundations, or PWFs) have been around at least since the 1940s, and my own experience with them dates back 20 years or so.

     
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    Working With Self-Leveling Floor Underlayments

    Flatten uneven subfloors quickly with these pour-inplace compounds.

     
  • Seal Seams In Crawlspace Liners

    The crawlspace of a home was consistently wet — in spite of the 6-mil poly liner. Here's how a builder fixed it to assure long-term durability of the foundation and floor frame.

     
  • Replacing a Slab Foundation

    When the original builder flubs a foundation, someone else has to clean up the mess.

     
  • Extreme Temperature Formula Low-VOC Subfloor And Deck Construction Adhesive

    Liquid Nails’ new Extreme Temperature Formula low-VOC subfloor and deck construction adhesive can be gunned by hand at temperatures down to 22°F, and will stick to wet, frozen, and treated lumber readily and won’t dissolve foams and plastics.

     
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    Laying Block Steps

    Get a cast-in-place look with versatile CMUs installed over a reinforced slab.

     
  • Super-Insulated Slab Foundations

    Compacted drainage stone and a thick layer of foam prevent frost damage and keep the heat inside the building.

     
  • Foundation for a Problem Site

    A carefully engineered foundation and alternative septic system add value to a bargain-priced lot.

     
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    Dry Wall

    Cosella-Dörken’s three-ply Delta Footing Barrier keeps groundwater out of walls by providing a waterproof break between a building’s footing and its foundation

     
  • Insulating a Slab With Spray Foam

    Closed-cell polyurethane provides a vapor barrier and good R-value in a single application.

     
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    Installing a Wood Parquet Floor

    Assessing the moisture content and surface condition of the slab was the critical first step.

     
  • Lowering a Basement Floor

    Gaining an extra foot of headroom isn’t easy, but it can yield valuable living space.

     
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    Drying a Stone Cellar

    Letting the water run through keeps this 200-year-old basement dry.

     
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    Framing a 16-Sided Addition

    Accuracy in laying out and building the foundation helped keep the rest of the job on track .

     
  • Tree Roots and Foundation Cracks

    Can the roots of a tree actually dry out the soil beneath a foundation enough to cause the concrete to crack?

     
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    Attaching Deck Ledgers to I-Joist Cantilevers

    When I-joists are cantilevered over the foundation wall rather than directly supported at the sill plate, can a deck ledger be safely attached to the engineered rim joist?

     
  • Mudsills and Out-of-Level Foundations

    Recently we contracted to do a house with precast foundation walls that were set out of level - up to 3/4 inch over 30 feet, in some places. What's the best way to shim and air-seal the mudsill?

     
  • Insulating a Radiant Slab

    How much insulation is necessary under a typical basement radiant slab?

     
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    Replacing a Stone Foundation

    The trick was holding up the roof while leaving plenty of room to work.