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Foundations

  • 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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    Pop Quiz

    Walter Moreau is executive director of Foundation Communities, a nonprofit affordable housing developer in Austin, Texas.

     
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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.

     
  • Pop Quiz - Walter Moreau

    Walter Moreau is executive director of Foundation Communities, a nonprofit affordable housing developer in Austin, Texas.

     
  • MacArthur Foundation Awards $6 Million toHousing Research

    he critical ways that housing matters to children, families, and communities will be explored in 13 separate research projects funded by the John D. and Catherine T. MacArthur Foundation.

     
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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.

     
 
 
 
JLC Field Guide to Decking