For many jobs, though, products with less compressive strength are more than sufficient and can reduce insulation costs. With a large fleet of trucks and premium delivery service in Victoria, you ensure that schedules are met and concrete is poured on time. Can withstand loads from large vehicles and equipment, Retains R-value even with moisture exposure, Easily shaped on site or supplied prefabricated, No long-term R-value loss or thermal drift. 4/10/2012 3 Climate Zones E301.1 6 5 8 4 Slab R‐Value Table 402.1.1 Insulation and Fenestration Requirements by Component E402.1.1 ClimateZone Slab R‐valued 4 10, 2 ft 5 10,2 ft 6 10,4 ft 9 The U.S. Department of Energy (DOE) estimates insulating the exterior edge of slabs in slab-on-grade buildings can reduce winter heating bills from 10 to 20 percent. I wouldn’t go as far as saying you 'couldn't' use spray foam below a slab, but I’m not sure why you’d want to. Insulation under the slab will help the floor stay warmer even in the summer time. It is easy to install and can be used in many applications; exterior sheathing, interior basement walls, exterior foundation, hydronic and under slab insulation. For Under Floor Slabs, FOAMULAR® 150 or 250 can be used for residential and light commercial applications where floors are subject to normal loads; use FOAMULAR® 400, 600, or 1000 for industrial applications where floor areas will be exposed to heavy loads. The correct installation of polythene DPM, rigid insulation and separating layers are highly important not just for the overall integrity of the screed system but for the quality of the entire flooring. We also have insulation boards suitable for more specialist flooring applications, for example heavy duty floor insulation and insulation for cellar and basement floors. After 30 days of drying time, the XPS still had elevated moisture of 15.7%, while the EPS had dried to 0.7%. Although concrete itself has certain insulation properties, it is not nearly enough to keep your feet warm during harsh winter months. Exceeding the ASTM C578, ‘Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation’. A number of studies show that EPS retains less moisture than XPS. There are a number of different factors at play but the one thing that we always need to keep in mind is heat flow. DuroFoam insulation is a closed cell and moisture resistant insulation with a white film on one side and silver on the other. Installation of Unitherm® perimeter insulation is the simplest, most effective way to improve the thermal performance of the concrete slab. Insulation is laid on the concrete and covered with a screed. EcoFoil Under Slab Insulation consists of a layer of metalized foil centered between a layer of bubble insulation laminated to each side with a permanent bond. You can select from our standard sizes or customise your size & shape specific to your project. Wood. This standard provides a key quality check on rigid insulation. Many builders bevel the top of the vertical insulation so that none of the rigid foam is visible after the concrete slab is placed. Such insulation helps reduce heat loss to the ground in residences, cold storage units, warehouses and other commercial, institutional and industrial structures. That decision may hinge on whether the slab is heated, but there’s no agreement … It will help in the winter obviously. Or, as demonstrated here, you can cover the slab with rigid-foam insulation, add two layers of plywood, and then add the finish flooring. Minimising heat loss will subsequently reduce energy costs. Unitherm® delivers the high compressive strength and efficiency required in residential slabs, preventing thermal loss through the ground. They both come in various rated compressive strengths from 10 psi to about 80 psi. The testing lab also found that XPS holds water longer than EPS. To insulate a concrete slab, you will need to apply an insulation barrier. EPS manufacturers typically warrant 100% of the published R-value for 20 years or more, while common XPS warranties cover just 90% of the published R-value. When building a slab on grade, EPS rigid foam insulation is the most common choice of insulation, for performance and cost. As for vapour barrier it will get destroyed while the cement is poured from the stones puncturing. Rigid foam insulations, such as expanded polystyrene (EPS), have been used successfully under concrete slabs for more than 40 years. Horizontal insulation placed less than 12 inches below the ground surface or that portion of horizontal insulation extending outward more than 24 inches from the foundation edge should be protected against damage by use of a concrete slab or asphalt paving on the ground surface directly above the insulation or by cementitious board, plywood rated for below-ground use, or other acceptable materials, approved … Below-grade insulation enhances thermal performance in buildings and helps protect concrete from freeze-thaw damage. This highly effective combination of materials offers high compressive strength and great thermal performance when used in below grade and under slab … Where the heating is likely to be turned on and off, such as in new-build domestic properties, and a faster thermal response is required, the ‘floating floor’ arrangement of insulation above the slab can be more appropriate. Unitherm® is made from Unipoly®, a light-weight moulded polystyrene material with exceptional thermal insulation properties. In addition to higher moisture resistance, EPS also is not subject to thermal drift. Upload Any Drawings, Pictures or Information, Quality Assured Company by AS/NZS ISO 9001, For a detailed pricing take-off, please s. end through your information, drawings and requirements for an obligation free estimate. For installations where the insulation will be exposed to large amounts of water or frequent wetting, rigid foam insulation is available with water-resistant facers or pre-cut drainage grooves. Rigid foam insulations, such as expanded polystyrene (EPS), have been used successfully under concrete slabs for more than 40 years. Slabmate X is an addition to the slab on ground insulation solutions. Installing insulation prior to the pouring of a concrete slab floor improves the energy efficiency of the floor and makes it more comfortable. XPS and EPS rigid insulation is used under concrete slabs. Below-Grade Under Slab system with FOAMULAR® rigid board insulation. This can result in greatly over-designing the insulation’s strength. Say you use an average (and relatively inexpensive) rating of 40 psi, then the insulation will support: 40 psi x 8” wide tire x … A case in point is a side-by-side analysis of the two rigid foam types installed on a commercial building foundation in St. Paul, Minn. You can attach wood sleepers to the floor, fill the gaps with rigid-foam insulation, and then apply your finish flooring. A common design assumption leads to specification of rigid foam strengths that are many orders of magnitude higher than necessary, which can double the insulation material cost. Concrete. This is especially the case in colder climates. By comparison, the manufacturing process for XPS uses blowing agents that diffuse from the foam’s cellular structure over the life of the product, thereby reducing its thermal performance. Three important factors to consider when comparing these two insulations for any belowgrade or under-slab application are compressive strength, moisture retention, and insulating capability. Moisture resitance and stable R-value protects and insulates your concrete slab for a superior energy saving solution. Let's unpack the issue in the context of ANSI/ASHRAE/IES Standard 90.1 - Energy Standard for Buildings Except Low-Rise Residential Buildings. Moisture resistance is also important for belowgrade and under-slab insulation, since wet products provide much lower thermal resistance. Using an unnecessarily high-strength insulation, you end up paying for something you don’t really need. Insulation with polymeric laminate facers keep water from entering the insulation and also provide an added barrier to water wicking or diffusing through foundations and slabs. For example, installing a below-grade insulation rated for 100 psi, when only 40 psi is needed, will nearly double the material cost. For example, with a forklift load on a typical 4-inch-thick slab, one calculation would indicate that 32 psi is applied to the insulation compared to only 2.5 psi under a more accurate calculation. There are two ways to handle insulating concrete floors. The following information is a guide to the installation of rigid insulation on ground floors to receive a screed. Sort by: Top Sellers. We have a wide range of floor insulation boards, including solid ground floor insulation, suspended floor insulation and soffit insulation. While you can apply insulation over the concrete slab, that requires adding wood subflooring and other components that add to the cost and complexity of the project. Visit www.insulfoam.com for more information. Concrete Construction: Resources for contractors and specifiers including construction methods, materials and practices, Find products, contact information and articles about, Choosing Between EPS nd XPS Rigid Insulation, Three Key Lessons about Moisture in Concrete, Concrete Construction February-March 2020, Harold Hay, Skytherm, and the Quest for Passive Cooling, Week in Tech: Pantone Channels Fortitude and Optimism for Its 2021 Color of the Year, Kathryn Anthony Awarded the 2021 AIA/ACSA Topaz Medallion, Studio Prize: Weighted Transparency: Literal and Phenomenal, Legrand Introduces Ultra-Fast USB Outlets to Adorne Series, Builders Seek More Capital to Meet Surging Demand, HGTV Unveils 25th Edition of the HGTV Dream Home, Battle Over Gas Hookup Regulation Intensifies in California, Review: ‘Nail Your Numbers: A Path to Skilled Construction Estimating and Bidding', Choosing Between EPS and XPS Rigid Insulation. Up to one-quarter of a building’s energy loss is due to lack of insulation in below-grade areas, including the foundation and under slabs. Moisture resitance and stable R-value protects and insulates your concrete slab for a superior energy saving solution. Concrete Slab Insulation. In case your home is laid directly onto the ground, then added insulation will only prevent heat loss and the cold coming from the … Install as a continuous barrier around the edge of the slab, protect the exposed surface with a render finish or a suitable sheet material. A common question with rigid foam insulations is how well it resists water. Underslab expanded polystyrene pricing is based on sheet quantity and thickness. In this scenario, a rigid foam insulation is usual, and as you’d want the same U value in the roof, we need the same thickness of insulation (180mm). Since EPS is lower cost per inch than XPS, and is available in a range of compressive strengths (from 10 to 60 psi), using it belowgrade and under slabs can save on insulation costs. Existing Drywall. INSTA-PANELS ® are insulated R-11 foam panels made of rigid polyurethane foam, covered in steel or fiberglass on both sides. - Owens Corning® Enclosure Solutions Of these two materials, green builders prefer EPS, because EPS is manufactured with a more environmentally benign blowing agent than XPS. Many designe… The side-by-side insulation comparison highlighted previously found the EPS retained 94% of its specified R-value, while the XPS lost nearly half of its insulating capability over the 15 years the materials were on the foundation. Unheated slab-on-grade floor:a slab-on-grade floor that is not a heated slab-on-grade floor. As such, it is not uncommon for under slab insulation to be over-designed by a factor of 10 or more. This means that its R-value stays the same over time. First, the standard defines two classes of slab-on-grade: Heated slab-on-grade floor: a slab-on-grade floor with a heating source either within or below it. Styroboard expanded polystyrene sheet insulation is ideal for coolrooms, wall and ceiling insulation, under concrete slab requirements and architectural paneling. Slabmate will not breakdown over time, is made from high quality materials and no CFCs or ozone depleting properties are used in the material. Such insulation helps reduce heat loss to the ground in residences, cold storage units, warehouses and other commercial, institutional and industrial structures. Such boards have regularly spaced channels covered with a filtration facer to keep the channels clear. In cold climates (climate zones 4 and higher), it’s important to install vertical insulation on the interior side of the stemwall all the way down to the footing. Next day deliveries are available, please contact 1800 486 4763. Heated slabs-on-grade will feature hot wat… Slab edge insulation protects the sides of concrete slabs. Confirm with your engineer what strength is needed. Insulation under concrete floor slab is often desirable for commercial buildings such as warehouses and factories, which are being designed to withstand high loads from large vehicles or equipment and here Knauf ClimaFoam XPS Board has proven long-term performance. Exterior Concrete Slab Insulation Options It is good practice to insulate concrete slabs in cold climates to protect the slab from frost penetration. What’s new with Passivhaus design is the idea of completely isolating the building foundation from the ground, not only under the slab, but also under the footings. Kooltherm K3 Floorboard is a super high performance, fibre-free rigid thermoset closed cell phenolic insulation for solid concrete ground based floors. 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