Suitable Product for Concrete Slab on Ground Floor. Say you use an average (and relatively inexpensive) rating of 40 psi, then the insulation will support: 40 psi x 8” wide tire x 12” long tire print = 3,840 lbs. Our Businesses In Australia. FOAMULAR® 1000 High Compressive Strength Rigid Foam Insulation With solutions ranging from our OPTIM-R vacuum insulation panels to our Kooltherm phenolic insulation boards to Therma PIR insulation boards, we can provide the best solution for solid floors, below the screed or below the concrete slab, including floors with underfloor heating. Photograph 2: Perimeter Slab Edge Insulation and Perimeter Slab Insulation—Two inches of rigid insulation is about the maximum practical thickness possible. Slab on grade Building foundation slab sill plate sealing rigid foam the path to zero net energy 2017 03 concrete slab insulation for home concrete slab insulation peritussprayfoam eps and xps rigid insulation. A careful evaluation of these materials' performance attributes against the project's needs … Insulating over slabs helps reduce the potential for condensation or “sweating”, reduce energy loss and increase the warmth of the homeowner. In the case of a house in central Missouri, it is also a way to eliminate the concrete slab from the equation. A well-insulated concrete slab ensures that the thermal efficiency of the property is controlled and maintained. Concrete Slab. Continuous insulation is defined in 90.1 as “insulation that is continuous across all structural members without thermal bridges other than fasteners and service openings. XPS and EPS rigid insulation is used under concrete slabs. 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. If I use a wall I can use a wall sweep and it is easy but if I use a structural foundation I can't use a wall sweep and would have to use an in-place model. EPS is also the most inexpensive of the three types of rigid foam insulation, while also meeting the required building and energy codes. Installing insulation prior to the pouring of a concrete slab floor improves the energy efficiency of the floor and makes it more comfortable. Exceeding the ASTM C578, ‘Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation’. phamENG - You are correct, this would obviously not be a composite deck situation. One of my concerns was how this would effect my diaphragm but I can't think of a good reason why it couldn't be made to work. Specialty subfloor systems consist of rigid foam insulation sandwiched between a vapor barrier on the bottom and a sub-floor material like plywood or OSB on top. Rigid foam insulations, such as expanded polystyrene (EPS), have been used successfully under concrete slabs for more than 40 years. A slabless slab may sound far-fetched, but peeling back the layers, we can see that the assembly begins with a compacted base over undisturbed ground. Insulating on top of a slab is a fast way to warm up a slab-on-grade concrete floor. Water resistant rigid board for under concrete slab insulation and slab support in traffic bearing applications. Kooltherm K3 Floorboard. at each tire. Concrete is cold and hard, but an insulated concrete slab can make a heated garage significantly … OSB panels can be installed over concrete slab floors in both commercial and residential settings. Their researchers found that XPS insulation installed below grade for 15 years had absorbed 67 percent or more moisture. It can be tempting to cut the insulation at ground level to avoid seeing it, but this creates an area for heat to move in or out of the home and there will be heat loss through the floor and foundation if not fully insulated. When adding insulation to concrete applications such as foundations, walls, and slabs, one of the more highly recommended forms is rigid foam insulation. Kooltherm K3 Floorboard is a super high performance, fibre-free rigid thermoset closed cell phenolic insulation for solid concrete ground based floors. 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 … One of the best ways to save money on rigid foam insulation installed under concrete slabs is to ensure the material is not over-engineered. Products for this Application. We paid close attention to the concrete mix design. Concrete Slab Insulation. Under-Concrete Slab Adding a continuous layer of insulation under the concrete slab foundation creates a thermal barrier between the ground and the heat-conductive concrete. Enhance energy efficiency and moisture resistance using Styrofoam™ Brand Rigid Foam insulation both under and over slab. It can be applied on the roof, floor, and walls, and it’s most widely used in structural insulated panels and insulated concrete forms. When exterior foundation walls are insulated, it helps the concrete stay warm and uses thermal mass properties to help keep the basement warmer. Concrete Slab Insulation DBWEF48100 (48” x 100’) – 400 sq. Moisture resitance and stable R-value protects and insulates your concrete slab for a superior energy saving solution. A 4-inch-thick concrete slab was placed on top of the vapor barrier. We offer high-performance concrete slab insulations for both under- and over-slab applications. There are two ways to handle insulating concrete floors. How are people handling rigid slab insulation? Or, as demonstrated here, you can cover the slab with rigid-foam insulation, add two layers of plywood, and then add the finish flooring. ft. About the Product: The Reflectix® Concrete Slab Insulation is an innovative, easy-to-handle product that increases the energy efficiency of radiant floor and snow melt systems (under concrete). How to Insulate a Garage Floor Above a Concrete Slab. One of the best ways to save money on rigid foam insulation installed under concrete slabs is to ensure the material is not over … He wants to put rigid insulation on metal deck and then pour a slab over the insulation. Such insulation helps reduce heat loss to the ground in residences, cold storage units, warehouses and other commercial, institutional and industrial structures. Products and Resources for Interior Basements. When slab insulation is provided, a sheet polyethylene vapor barrier should be located over the rigid insulation and in direct contact with the concrete slab. Notice that the sheet polyethylene “vapor barrier” is located on the top of the rigid insulation between the rigid insulation and the bottom surface of the concrete – in direct contact with the concrete. It can be mounted directly over the concrete slab, and abut the FOAMULAR® wall insulation where it meets the floor. 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. Underslab floor insulation rockwool slab hy concrete engineering doe building foundations section 4 2 doe building foundations section 4 2 use of polyisocyanurate foam insulation doe building foundations section 4 2. Many builders bevel the top of the vertical insulation so that none of the rigid foam is visible after the concrete slab is placed. For under-slab applications, the rigid foam insulation typically should be installed over a gravel base, with a poly vapor diffusion retarder between the gravel and insulation. Perimeter slab insulation should cover as much of the exposed concrete as allowed by code. EPS is, by far, the most versatile of the three rigid insulation options. Sleepers can be applied to the concrete slab over rigid foam insulation and the OSB panels can then be installed directly onto the surface. One advantage to the novice, who has neither the equipment, the tools, nor experience to install foam insulation, is that rigid foam insulation can be installed very simply. Such insulation helps reduce heat loss to the ground in residences, cold storage units, warehouses and other commercial, institutional and industrial structures. Spray foam for sure has uses where it is the best choice by a long shot, but under a slab is not the place. This all-in-one product comes in tongue-and-groove panels that snap together over the concrete. Benefits of foam insulation under concrete slab . Ground floor – insulation above concrete slab. If the vapor barrier had been placed over the gravel, below the insulation, we could have had a major issue on our hands with water retained in the foam insulation layer. 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. TARGET AN APPROPRIATE COMPRESSIVE STRENGTH. Is one way better than the other from an architectural standpoint (str isn't in Revit yet :banghead:) How to install rigid floor insulation on ground floor concrete substrates before screeding Posted on 19th October 2011 The following information is a guide to the installation of rigid insulation on ground floors to receive a screed. You can attach wood sleepers to the floor, fill the gaps with rigid-foam insulation, and then apply your finish flooring. They both come in various rated compressive strengths from 10 psi to about 80 psi. There is a variety of different methods and factors to be considered with this type of installation. As the slab will only be able to dry upward, the slab should be allowed to dry before finishes are applied. OSB structural wood panels can be installed over concrete slab floors for both commercial and residential applications. Unlike its fluffier and flexible counterparts, foam insulation is rigid and needs to be installed correctly so that no gaps exist. Over concrete slab floors, FOAMULAR® rigid foam boards offer long-lasting thermal protection. Kooltherm K3 Floorboard. When building a slab on grade, EPS rigid foam insulation is the most common choice of insulation, for performance and cost. While you can apply insulation over the concrete slab, that requires adding wood subflooring and other components that … The panels can be installed directly onto the concrete slab, over sleepers which are installed onto the concrete slab or over rigid foam insulation. Rigid foam insulations, such as expanded polystyrene (EPS), have been used successfully under concrete slabs for more than 40 years. Doe Building Foundations Section 4 2 Foundation WallSlab Hy Concrete Engineering Building ScienceUse Of Polyisocyanurate Foam Insulation Below Concrete SlabsInsulating Over A Structural Slab Jlc […] Thermal insulation is positioned above a ground floor slab when the building’s heating is used intermittently – like in many homes, where it is often switched on in the morning and again in the evening. Additional insulation is applied along the edges of the slab, because that is a primary surface for heat loss. . Concrete Slab. 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