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Information Sources

CFCA: Technical Reports & Resources On Concrete Flooring
Concrete Floor Contractors Association Of Canada provides information and resources on concrete flooring including technical bulletins, design, methods, materials and more.
Issues & Performance

ASCE: Purchasable Book On Design and Construction of Frost-Protected Shallow Foundations
American Society of Civil Engineers sells it's ASCE Standard 32-01: Design and Construction of Frost-Protected Shallow Foundations that addresses design and construction of frost-protected shallow foundations in areas subject to seasonal ground freezing. $46 USD

Concrete Network: Repairing Cracks In Concrete Floors & Slabs
Concrete Network provides information about concrete crack repair including troubleshooting cracks and choosing repair materials, how-to tips for fixing cracks, and tips for how to prevent concrete cracks.

Concrete Network: Slabjacking To Raise Sunken Concrete Slabs
Concrete industry site explains slabjacking, where a cement slurry is pumped under the concrete to lift the sunken and uneven surface back into its proper position.

JLC: Joints in Concrete Slabs
Journal of Light Construction describes how to detail the slab to minimize cracking/

NZSEE: Performance Of Residential Concrete Slabs Under Seismic Conditions
New Zealand Society for Earthquake Engineering paper Performance of Residential Concrete Slabs under Seismic and Soil Liquefaction Conditions says many habitable houses with unreinforced cracked concrete floors are being written off unnecessarily, due to the wording of insurance policies and ignorance with respect to the reparability of such. (PDF)

BCBEC: Practical Considerations Of Installing In-Slab Thermal Breaks
BC Building Envelope Council online slide show presentation discusses issues and considerations for installing in-slab thermal breaks. (PDF)

Building America: Installing Polyethylene Sheeting Under Concrete Slab
Building America Solution Center describes issues and considerations for installing polyethylene sheeting under concrete slab.

Building Science: Concrete Floor Problems With Sand Over Vapour Barrier
Building Science article describes problems when placing a layer of sand over the top of a plastic ground cover under a concrete slab.

Building Science: Design & Installation Of Slab Edge Insulation
Building Science describes how the slab edge represents a significant heat loss potential, and how insulating it is important not only to the energy performance of a building but moisture management of the building as well.

Building Science: Problems & Solutions For Floor Slabs
Building Science online slide show describes problems and solutions for concrete floor slabs. (PDF)

Building Science: Slab Happy Insulation
Building Science describes how to insulate a slab, including on the top, on the bottom, on the edge, and some combination of the three.

Building Science: Slab On Grade Foundation For Mixed Humid Building Climates
Building Science offers these clearly detailed drawings showing an example of the slab on grade foundation type.

Building Science: Some Interesting Stuff On Slabs
Building Science online slide show covers issues and design recommendations for concrete slabs (PDF)

Buildipedia: Slabs For Colder Climates
Buildipedia series of articles covers issues and considerations for constructing slabs in colder climates.

CMHC: Problems & Solutions For Slab On Grade Construction
CMHC guide addresses some common problems that can occur when constructing slab-on-grade foundations and recommends means to prevent these problems. (PDF)

Concrete Network: How to Build High Quality Slabs On Grade
Concrete Network describes reasons for building a slab on grade, tips for proper subgrade compaction, types of foundations, curing info, and more.

Concrete Network: Vapor Barrier Installation For Concrete
Concrete Network says to be effective, a vapor barrier must be installed in a way that prevents any water vapor from getting to the slab. ASTM E 1643, Standard Practice for Installation of Vapor Retarders Used in Contact with Earth or Granular Fill Under Concrete Slabs, provides details, but here are a few tips.

Fine Homebuilding: How To Pour A Solid, Well-Insulated Garage Slab
Fine Homebuilding describes how to pour a rock-solid, well-insulated garage slab.

GBA: Another Take on a Concrete-Free Slab
Green Building Advisor describes how a Northern Minnesota designer omitted the concrete under the floors in this new house. It is an interesting new trend among builders of green homes.

GBA: Best Way to Insulate a Basement Slab
Green Building Advisor discusses whether XPS, EPS, or spray polyurethane foam is best for insulating the slab of a new home in the US northeast.

GBA: Details for Insulating a Slab Perimeter
Green Building Advisor says keeping all of the insulation to the inside of the foundation wall offers at least two advantages.

GBA: Foundation Plan For Snowy Climate
Green Building Advisor discusses how much distance should separate wood framing and grade to prevent rot when building on a slab.

GBA: Installing Concrete Slab The Right Way
Green Building Advisor discusses whether or not a slab should be poured on a base layer that includes sand.

GBA: Polyethylene Placement Under Concrete Slabs
Green Building Advisor discusses whether or not the poly vapor barrier belongs above or below the rigid foam.

Healthy Heating: Underslab Insulation
Healthy Heating says you get one chance to insulate under a slab, and provides information and resources to do a thorough analysis to ensure the best decision is made before the concrete is placed.

JLC: Insulating A Slab With Spray Foam
Journal of Light Construction describes how spray foam can be a better way to insulate beneath a foundation slab.

JLC: Layout Under The Slab
Journal of Light Construction describes how to lay out sub-slab rough plumbing and electric, and how to do a careful, thorough job to make sure the rough-ins will be done right the first time.

JLC: Post-Tensioned Slabs For Expansive Soils
Journal of Light Construction article on post-tensioned slabs describes how high-tension steel tendons enable slab foundations to withstand the stresses of expansive soils.

JLC: Pouring A Shallow Frost-Protected Slab
Journal of Light Construction explains how good drainage and rigid foam insulation can protect foundations placed above the frost line.

JLC: Pouring A Slab Over An Existing Slab
Journal of Light Construction describes how to place a topping slab over an existing concrete slab.

JLC: Supporting A New Slab Next To Existing Foundation
Journal of Light Construction describes effective ways to support a new slab poured adjacent to an existing basement.

JLC: Tips For Crack-Free Concrete Slabs
Journal of Light Construction articles explains that prepping the base and proper layout of control joints are as important as placing and finishing.

NRCan: Insulating Basements & Foundations
Natural Resources Canada online guide Keeping The Heat In describes how to insulate basements from outside and inside, crawl spaces, open foundations, and concrete slab on grade.

US DOE: Capillary Break Beneath Slab
US Department of Energy online guide Capillary Break Beneath Slab, Polyethylene Sheeting or Rigid Insulation Over Aggregate describes considerations for using either: 6-mil polyethylene sheeting lapped 6-12 inches, or 1-inch extruded polystyrene insulation with taped joints.

US DOE: High-Performance Slab-On-Grade Foundation Insulation Retrofits
US Department of Energy report High-Performance Slab-on-Grade Foundation Insulation Retrofits assesses slab-on-grade foundation insulation energy savings based on possible site and source energy savings for retrofits in US climate zones 4–7 for single and multifamily homes. (PDF)

US DOE: Optimized Slab-On-Grade Foundation Insulation Retrofits
US Department of Energy report Optimized Slab-On-Grade Foundation Insulation Retrofits found the optimized insulation upgrade package consists of 4 in. of extruded polystyrene foam (XPS) extending from the ground level to the top of the existing sill plate. The below-grade insulation extends to half the below-grade stem wall depth. It consists of one piece of 2-in. XPS laid at an incline, with the space between the XPS and foundation wall filled with pourable polyurethane foam. (PDF

US DOE: Slab Insulation
US Department of Energy online fact sheet for homeowners and contractors describes how to insulate slab-on-grade floors and control moisture, air leakage, termites, and radon. (PDF)

WBDG: Design Guide For Floor Slabs
Whole Building Design Guide provides on overview of floor slab fundamentals, functions, components, applications, detail drawings, and links to more resources.
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