Suitable Product for Concrete Slab on Ground Floor. Such boards have regularly spaced channels covered with a filtration facer to keep the channels clear. Moisture resitance and stable R-value protects and insulates your concrete slab for a superior energy saving solution. Insulation is laid on the concrete and covered with a screed. Install Unitherm® beneath the concrete slab to ensure optimal heating performance. Underslab expanded polystyrene pricing is based on sheet quantity and thickness. 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. 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. Spray foam for sure has uses where it is the best choice by a long shot, but under a slab is not the place. It will help in the winter obviously. Unitherm® is made from Unipoly®, a light-weight moulded polystyrene material with exceptional thermal insulation properties. A careful evaluation of these materials' performance attributes against the project's needs … Re: Is it worth it to insulate under a concrete slab? Understanding rigid foam insulation for foundation and under-slab applications Contractors are increasingly called upon to install rigid foam insulation under concrete slabs and on building foundations. When it comes to concrete and insulation, contractors tend to be most familiar with extruded polystyrene (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. Below-grade insulation enhances thermal performance in buildings and helps protect concrete from freeze-thaw damage. Such boards are effective at channeling water away from the foundation face, and can drain up to five gallons per minute per foot. Unitherm® delivers the high compressive strength and efficiency required in residential slabs, preventing thermal loss through the ground. This applies regardless of whether you have a garage or a basement space underneath your home. 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. Install as a continuous barrier around the edge of the slab, protect the exposed surface with a render finish or a suitable sheet material. This encapsulates the reflective foil sheet preventing it from being exposed to the ground or the concrete, ensuring the life and performance of … Say you use an average (and relatively inexpensive) rating of 40 psi, then the insulation will support: 40 psi x 8” wide tire x … DuroFoam insulation is a closed cell and moisture resistant insulation with a white film on one side and silver on the other. Styroboard expanded polystyrene sheet insulation is ideal for coolrooms, wall and ceiling insulation, under concrete slab requirements and architectural paneling. 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. Using rigid foam insulation around the perimeter of the slab to minimize heat loss seems like an obvious step, but whether to place insulation under the slab is another story. Water resistant rigid board for under concrete slab insulation and slab support in traffic bearing applications. For a detailed pricing take-off, please send through your information, drawings and requirements for an obligation free estimate. This is especially the case in colder climates. Exceeding the ASTM C578, ‘Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation’. Kooltherm K3 Floorboard. In case your home is laid directly onto the ground, then added insulation will only prevent heat loss and the cold coming from the … Let's unpack the issue in the context of ANSI/ASHRAE/IES Standard 90.1 - Energy Standard for Buildings Except Low-Rise Residential Buildings. See More + Rigid foam insulations, such as expanded polystyrene (EPS), have been used successfully under concrete slabs for more than 40 years. We have a wide range of floor insulation boards, including solid ground floor insulation, suspended floor insulation and soffit insulation. When extracted and tested after 15 years in service, the EPS had 4.8% moisture content by volume, compared to 18.9% for the XPS (a four-fold difference). 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 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. 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. Of these two materials, green builders prefer EPS, because EPS is manufactured with a more environmentally benign blowing agent than XPS. Exceeding the ASTM C578, ‘Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation’. This highly effective combination of materials offers high compressive strength and great thermal performance when used in below grade and under slab … Sort by: Top Sellers. Unheated slab-on-grade floor:a slab-on-grade floor that is not a heated slab-on-grade floor. 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. Slab edge insulation protects the sides of concrete slabs. In order of achieving this, you will need proper insulation installed. 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. Next day deliveries are available, please contact 1800 486 4763. Ram Mayilvahanan is product marketing manager for Insulfoam, a U.S. manufacturer of engineered EPS insulation products. As insulation becomes increasingly common on foundations and under slabs, understanding the performance and cost factors of the different materials is important for successful bids and profitability. Many designe… (For more information on this issue, see “Choosing Rigid Foam.”) In addition to higher moisture resistance, EPS also is not subject to thermal drift. Concrete. After 30 days of drying time, the XPS still had elevated moisture of 15.7%, while the EPS had dried to 0.7%. Below-Grade Under Slab system with FOAMULAR® rigid board insulation. Purlink Foamex PurlinK is a high density polystyrene purlin insulation for greater thermal efficiency of metal deck roofing. A number of studies show that EPS retains less moisture than XPS. Many designers mistakenly assume that loads placed on slabs transfer through to the underlying insulation and soil at a 45-degree angle instead of a more uniform distribution. Minimising heat loss will subsequently reduce energy costs. 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. Using an unnecessarily high-strength insulation, you end up paying for something you don’t really need. Moisture resitance and stable R-value protects and insulates your concrete slab for a superior energy saving solution. Unitherm® is made from Unipoly®, a light-weight moulded polystyrene material with exceptional thermal insulation properties. Confirm with your engineer what strength is needed. Wood. A common question with rigid foam insulations is how well it resists water. 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. 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. There will be a damp-proof membrane under the insulation and possibly a second membrane on top, depending on the type of screed. Many builders bevel the top of the vertical insulation so that none of the rigid foam is visible after the concrete slab is placed. Slabmate will not breakdown over time, is made from high quality materials and no CFCs or ozone depleting properties are used in the material. That decision may hinge on whether the slab is heated, but there’s no agreement … 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. 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. Existing Drywall. How to install insulation below a floor slab with Kingspan Kooltherm K103 Floorboard x 4 ft. x 8 ft. R-1.93 Insulating Sheathing (136) ... rigid foam insulation insulation foam boards foam insulation board EPS offers a number of advantages over the more commonly installed XPS, including having the highest R-value per dollar among rigid insulations, making it a cost effective choice for many jobs. 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. To insulate a concrete slab, you will need to apply an insulation barrier. Whether selecting EPS or XPS insulation, to ensure performance, confirm that the product was manufactured to meet the requirements of ASTM C578, Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation. Such insulation helps reduce heat loss to the ground in residences, cold storage units, warehouses and other commercial, institutional and industrial structures. 3 Results Insulation Location: Under Slab. 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 For installation on concrete foundations and under floor slabs, the rigid foam insulation you choose can make a difference of tens of thousands of dollars on a project. 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. Or, as demonstrated here, you can cover the slab with rigid-foam insulation, add two layers of plywood, and then add the finish flooring. As for vapour barrier it will get destroyed while the cement is poured from the stones puncturing. Slabmate is an under slab insulation solution that is applied first and then the concrete is poured on top with reinforcement. For example, installing a below-grade insulation rated for 100 psi, when only 40 psi is needed, will nearly double the material cost. Product Length (ft.) 10 ft. 8 ft. R-Tech 1/2 in. 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. In some high-performance building circles, it has become common to place a layer of insulation under a slab on grade. Plywood. We also have insulation boards suitable for more specialist flooring applications, for example heavy duty floor insulation and insulation for cellar and basement floors. Rigid foam insulations, such as expanded polystyrene (EPS), have been used successfully under concrete slabs for more than 40 years. Such insulation helps reduce heat loss to the ground in residences, cold storage units, warehouses and other commercial, institutional and industrial structures. As such, it is not uncommon for under slab insulation to be over-designed by a factor of 10 or more. With a large fleet of trucks and premium delivery service in Victoria, you ensure that schedules are met and concrete is poured on time. The ground is cold compared to air temp even in the summer. DuroFoam is the solution to your insulation needs. Kooltherm K3 Floorboard. Concrete Slab Insulation. Our Businesses In … The weight of concrete slabs and foundation backfill may imply that the highest strength insulation makes the most sense. Photograph 2: Perimeter Slab Edge Insulation and Perimeter Slab Insulation—Two inches of rigid insulation is about the maximum practical thickness possible. This standard provides a key quality check on rigid insulation. 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. 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). In addition to under slab insulation, slab edge insulation helps prevent internal temperatures being varied because of exposed sides. Moisture resistance is also important for belowgrade and under-slab insulation, since wet products provide much lower thermal resistance. You can select from our standard sizes or customise your size & shape specific to your project. Without getting into extensive technical details and mathematical formulas, the problem is engineers often use an overly conservative approach for insulation under concrete slabs. 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. Check out our full range of commercial insulation products here. The testing lab also found that XPS holds water longer than EPS. Exterior Concrete Slab Insulation Options It is good practice to insulate concrete slabs in cold climates to protect the slab from frost penetration. INSTA-PANELS ® are designed to be used as affordable and durable slab insulation and have all the benefits of regular sprayed-on polyurethane foam but in a clean and portable solution.. Common uses for INSTA-PANELS ® are:. Installation of Unitherm® perimeter insulation is the simplest, most effective way to improve the thermal performance of the concrete slab. It is easy to install and can be used in many applications; exterior sheathing, interior basement walls, exterior foundation, hydronic and under slab insulation. 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. XPS and EPS rigid insulation is used under concrete slabs. Additionally, rigid foam insulation drainage boards help reduce the hydrostatic pressure of the backfill on foundation walls. Heat flows from hot to cold, and in the […] Unitherm sheets are available in 4 standard thicknesses, measuring at 2500mm x 1200mm, or can be custom made to suit your requirements. For installation on concrete foundations and under floor slabs, the rigid foam insulation you choose can make a difference of tens of thousands of dollars on a project. 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. The following information is a guide to the installation of rigid insulation on ground floors to receive a screed. 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. When building a slab on grade, EPS rigid foam insulation is the most common choice of insulation, for performance and cost. 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