However, not all rigid foam insulation … The downside to this method is that you’ll lose some height to your space. The seams are overlapped six inches and taped. HYDROFOAM® maximizes radiant heat insulation for residential projects by ensuring the heat is dispersed evenly throughout the entire floor area, providing homeowners with a more comfortable living and working environment. Sheep’s wool insulation batts naturally improves air quality, manages moisture, absorbs sound, suppresses mold & mildew and is naturally fire resistive. If only we knew to screw more frequently when we put in the floor originally. Or, as demonstrated here, you can cover the slab with rigid-foam insulation, add two layers of plywood, and then add the finish flooring. After picking the skoolie subfloor insulation, we then started researching different wood subfloor types available. By gluing a ton of sawdust together, particleboard is created. Come to find out, the sheep in New Zealand are amongst the best in the world! At the Praire Modern house in Columbia Missouri, we previously looked at digging a hole in a very particular shape so that concrete stem walls could be poured and wall framing placed on those. The foam is best cut with a circular saw with a Bullet sawblade, it is made for cutting EPS; it is well worth the money. The GPS rigid board has a membrane on it, which acts as a vapor barrier. In a building, the heat rises to the ceiling leaving the cold air on the floor. Honestly, this bus conversion has been the only sane thing in this insane world lately. However, the minimum thickness is 150mm for mineral wool and about 90 mm for rigid foam insulation. What do you think about creating a skoolie subfloor? We ended up using Tuck Tape, which is a vapor barrier sheathing tape commonly used in sealing the seams of house wraps. – Brian, Your email address will not be published. Homeowners should consider hiring a professional to check this space for other moisture problems before investing in underfloor insulation. For this reason alone, it was quickly marked off our list of skoolie subfloor insulation possibilities. Rigid insulation can be laid on top of the original floor, then chipboard flooring can be placed over it. —This is the second in a series of four videos covering an insulated subfloor over a slabless slab. Protect the trench from running water and the elements, and ensure that people and animals cannot fall in. The resistance to breaking is greater than the particle board due to the bigger pieces of wood but still has the tendency to fail sooner than that of plywood. They include, framing, insulation and some even include drywall. You can still insulate your solid floor even if it doesn’t need replacing. it still heats up, so if you don't make your cut quickly across there, the saw still wants to wiggle back and forth...". You probably need more screws though. Rigid foam makes a great basement floor insulation. Category: Hydronic Insulation Tags: Hydronic Heating, Nudura ICF, Radiant Heat Floor Panels, Rigid Insulation. What a great comment! ThermalDry® insulated subfloor system will not attract mold or be damaged by moisture. Utilizing the same air gap technology, the R+ subfloor takes insulation a step further with an R-Value of 3, which can raise the temperature of finished flooring by up to 5.6° C / 10.6° F. DRIcore R+ combines high density Oriented Strand Board (OSB) and Extruded Polystyrene (XPS) which helps resist moisture and maintain its R-Value consistently. IKO Enerfoil IKO Enerfoil PolyISO Insulation Sheathing 3/4-inch x 4-ft x 8-ft . density insulation boards are available in a variety of thicknesses and standard sizes. We only know what we know when we’re researching. The right kinds are even dense enough to support a plywood subfloor without any supporting wooden strips underneath. We can't tell you how good it feels to BE working on something that lights our souls up and has such potential for a life that is entwined with nature, love, and happiness. This site uses Akismet to reduce spam. Nolan Reid dove through the Service Ontario hoops, leaped over the Insurance hurdles, and achieved... For Lacey Carpenter, her school bus conversion journey started with a big idea that drove her to... Before beginning our build, we found that planning school bus conversion ideas before buying any... BE Adventure Partners guides people in making money online. Then we walked (or steam rolled) around on it until it felt like it wasn’t coming up any longer. Trusted by Kiwis for more than 20 years, EXPOL Underfloor Insulation is easy-to-install and is available in 4 convenient joist widths 560, 470, 410, 360 (mm). We’re not perfect humans and we’re doing the best we can with what we have. Also, most of the screws through the metal floor pan are going to be located in the insulated underbody storage. After gluing two boards down, end to end, we would tape the seems to create a vapor barrier. 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 the square-edged plywood is screwed down to the floor, there is a tendency of the wood shifting while the skoolie is moving. We (I, Brian) plan on going under the bus with a wire wheel on the drill to clean every screw protrusion and put a fat dab of polyurethane caulking on the screw up against the metal floor pan so that the area is sealed around each screw. Compressive strengths † from 30 psi to 100 psi (210 kPa to 690 kPa) to meet the requirements of nearly every application. The lack of … I am wondering if I can install 4" thick Dow square rigid Styrofoam directly on my sealed basement slab with (2) layers of 5/8" plywood atop it as my floor surface. And we figured we'd get more stability out of doing one layer. This shift could cause the plywood to move independently of each other. Drive 3 1/2-inch screws through the 2-inch insulation and into the sleepers below; that screw length should anchor the subfloor without penetrating the poly barrier. Whatever type of insulation you install, the total R-value of the floor assembly must be no less than minimum code requirements. A 4 by 8 board weighs next to nothing and can easily be cut to fit. Thanks for the thorough coverage of all your decisions and methods. Insulated Floating Subfloor, Part 2: Plastic and Rigid Insulation Water and thermal barriers make a warm, dry base for the subfloor to float on At the Praire Modern house in Columbia Missouri, we previously looked at digging a hole in a very particular shape… We placed one screw in every corner and one screw between the corner screws on the longest edge. Luckily, we didn’t use too much spray foam in the hat channel that we should be OK. We live. The batts should be installed flush against the subfloor to eliminate any gaps, which could serve as passageways for cold airflow between the insulation and the subfloor. Insulation on Slab One option for insulating on top of a slab is to apply rigid foam insulation directly to the slab, then install the subfloor on top of the insulation. We ended up going with 1-1/16” rigid board insulation that has a vapor barrier attached to both sides of the board. Save time and space in your basement with Owens Corning FOAMULAR® INSULPINK® extruded polystyrene (XPS) insulation. It is … You simply lay sheets of foam on the basement floor, then fasten 5/8” plywood on top with concrete screws driven into predrilled holes in the floor. Plywood is created by attaching long thin sheets of wood together in layers. The screws hold down the plywood and the plywood holds down the foam. However, tongue & groove plywood subfloor has an advantage over regular square edge plywood. Basement Subfloor Rigid Foam Insulation. We are well on our way and are super excited to talk about solutions with others who are shooting for a similar way of living. SAFETY WARNING: In particular, follow safe trenching practices to avoid accidental burial and trench collapse. Live a smart & simple life on your terms. Make sure the insulation is the proper width for the joist spacing of the floor being insulated. IKO Enerfoil Sheathing Wall Insulation is a rigid, polyisocyanurate foam insulation board with high thermal properties. The insulation shall be Dow Styrofoam™ Floormate-X __mm closed cell rigid cellular extruded polystyrene (XPS) foam panel with minimum compressive strength 300 kPa. As you work with fiberglass insulation, the particles of glass can cause skin, eye and respiratory irritations. We then lowered the piece of plywood down onto the rigid board insulation being sure not to gouge it. One of the best tapes for sealing the seams of rigid foam is 3M All Weather Flashing Tape 8067. To keep plumbing pipes from freezing, install them as close to the subfloor as possible, without insulation between the pipes and the subfloor. The rigid board is easy to cut with a heavy-duty utility knife. However, we have not done the underbody storage as of this writing but will get to it soon. Hey, we're Brian + Erin. The batts should be installed flush against the subfloor to eliminate any gaps, which could serve as passageways for cold airflow between the insulation and the subfloor. The following information is a guide to the installation of rigid insulation on ground floors to receive a screed. This all-in-one product comes in tongue-and-groove panels that snap together over the concrete. There are two ways to handle insulating concrete floors. Barricade is one such example: 2x2x1.125-inch tiles with OSB wood on top and closed-cell polystyrene insulation, XPS on the bottom. If so, we would greatly appreciate it if you comment below and share it with a friend. One tactic is to place rigid insulation panels between the floor joists. Panels or insulation with rigid corners is the best option for creating a complete barrier. Something to keep in mind is that not all foam board is made the same and construction adhesive can react to some foams causing a chain reaction of bubbles kind of like when you mix baking soda and vinegar together for the volcano science project. • With any of the above, it’s best to protect the insulation with something like fiber cement board, hardware cloth, or other sturdy material to keep critters out. Install a basement subfloor using amdry rigid foam insulation installed over rigid foam insulation installed over basement insulation retrofits fine thermaldry insulated floor decking. Now that the metal floor pan is clean and the subfloor insulation and plywood subfloor materials are all picked out, it’s time to install the subfloor system. Did This Blog Post Help You? Start Here – The School Bus Conversion Guide, https://www.youtube.com/watch?v=OQn_IspcwJI, How To Register An Old School Bus & Get RV Insurance In Ontario Canada, Getting Titled & Registered As An RV Motorhome In Vermont Without Living There, How Planning School Bus Conversion Ideas Helps Save Money. An optional horizontal rigid insulation skirt can also be added to reduce heat loss to the surface, which can mitigate frost-related problems (see Figure 6-4). QUESTION: What’s the difference between plywood subfloor and tongue & groove plywood subfloor? Most packs of rigid foam feature a higher R-value per inch than cellulose, fiberglass, or cotton. The rigid foam should be protected by a layer of plywood, OSB, or drywall (for a garage ceiling). This project took us one afternoon to complete and is well worth the investment of installing it correctly so that our future projects will be secured safely while driving our bug out skoolie vehicle out into the wild! Or, as demonstrated here, you can cover the slab with rigid-foam insulation, add two layers of plywood, and then add the finish flooring. Get It Free. Rigid board insulation is the last option we considered. PL Premium is designed to work with the GPS rigid board we’re using. Drive 3 1/2-inch screws through the 2-inch insulation and into the sleepers below; that screw length should anchor the subfloor without penetrating the poly barrier. Continuous layer of rigid foam insulation keeps floors warm and comfortable. This will raise the level of the floor, so you will need to make sure doors are trimmed shorter to make room for the insulation. Spray foam was high up on our list because it adds rigidity to the structure of the bus and acts as a vapor barrier and insulation all in one. Every inch of insulation we add is an inch of headroom we lose in the van. It will be a durable and tight floor with that tongue and groove plywood! Trusted by Kiwis for more than 20 years, EXPOL Underfloor Insulation is easy-to-install and is available in 4 convenient joist widths 560, 470, 410, 360 (mm). It should be sealed airtight. 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. 5. Minimum for a subfloor is usually a screw every 6″ on the long edges and every 12″ in lines that are 16″ apart. Rigid Foam Insulation Installed Over Existing Foundation Slabs Building America Solution Center . Before building out and layering subfloor materials, there are a few things we did to ensure a long-term solid subfloor. Foam board insulation is used on attics and walls, yet it can also be used to insulate your floors. This method was going to be more complicated than we wanted to tackle. Make sure the insulation is the proper width for the joist spacing of the floor being insulated. See part 1 here. On any piece that had a cutout, we placed a screw on each of the resulting corners. EPS is also the most inexpensive of the three types of rigid foam insulation, while also meeting the required building and energy codes. This helps us to continue producing content and we hope that you use our links if our blog posts or videos have helped you in any way! Before products like Amdry Insulated Subfloors were available, contractors needed to build proper basement subfloor systems themselves. Having a gap between the insulation and the subfloor is ok. Subfloor systems eliminate the "cake layer" approach and give you all layers fused into tiles that can be attached to each other—at a higher price than the methods above. Follow the links below to learn about our floor insulation boards for each application, or alternatively if you know the product you want then enter it in the search box below. Insulated Floating Subfloor, Part 2: Plastic and Rigid Insulation. On previous projects, we had built what is called “a subfloor raft”: two layers of subfloor sheathing installed perpendicular to each other that simply floated on top of the insulation. But because I’m 6’2” it quickly lost its place in our subfloor insulation project due to height restrictions. There are two ways to handle insulating concrete floors. After the furring strips are installed, a Tyvek suit & heavy-duty respirator would be worn while spraying the area between the furring strips. Next, install the 3/4-inch subfloor on top of the rigid insulation. If you click a link and make a purchase, we’ll earn a small commission at not extra cost to you. This creates a dense composite that is popular in “cheap” building materials from big box commercial stores. November 30, 2018 Water and thermal barriers make a warm, dry base for the subfloor to float on At the Praire Modern house in Columbia Missouri, we previously looked at digging a hole in a very particular shape so that concrete stem walls could be poured and wall framing placed on those. I would use adhesive to secure the foam to the slab and adhesive to secure the plywood to the foam. One other thing to consider is that any puncture, or screw through, to the exterior of the bus needs to be sealed. It will actually serve as an additional insulating factor. Save my name, email, and website in this browser for the next time I comment. Sheep’s wool is an excellent option for subfloor insulation. Insulation and subflooring get installed in a single step, providing fast, hassle-free installation. It is typically taken to mean a lightweight construction where chipboard, gypsum or cement fibre board floor panels are ‘floated’ across the top of the rigid insulation layer. What was unusual is that the slab in this slab-on-grade home is missing. While OSB is stronger than particle board, it uses a considerable amount of glue to hold together. Insulated Floating Subfloor, Part 2: Plastic and Rigid Insulation Water and thermal barriers make a warm, dry base for the subfloor to float on At the Praire Modern house in Columbia Missouri, we previously looked at digging a hole in a very particular shape… A lower cost of utility bills; THREE READER Q&As Furnace Room Ventilation, Insulating Adding a subfloor to your basement is an easy and effective way to keep it dry and warm all year round.Basement floor insulation canada. Being that a skoolie is a metal bus, the entire bus is a thermal bridge. While the plywood was cut using a circular saw. First, it has the highest R Value per inch (6.0) of any rigid insulation. Then do your foam layer, standard foam is fine, and lay floating floor right on it … The more layers, the thicker & stronger the plywood. On October 28, 2020 By Amik. The first option, which is not the best option in our opinion, is the standard yellow, pink or white fiberglass insulation. Our main goal is to inspire people to get off-grid and become self-reliant. Encapsulating the floor system including duct work with Thermo-Cloth and closed cell spray foam insulation creates a "perfect wood framed floor system". Learn how your comment data is processed. Knauf Insulation Pty Ltd. Head Office: 23 Corporate Drive, Cannon Hill, QLD, 4170 Postal Address: PO Box 244, Cannon Hill, QLD, 4170 07 3393 7300 info.au@knaufinsulation.com Because of this, we decided to look at the different ways to install subfloor insulation to see what would work best for our application. Complete coverage is essential; there should be no insulation voids. We could use something heavier, like a 10-mil poly if we were going to leave it exposed for very long, but we laid our poly and them immediately started putting foam over the top of it.". In this article, we’re going to share with you our thought process and what we decided to do for our skoolie subfloor. When you are looking for polystyrene eps insulation board, think Halo! Basement Subfloor Rigid Foam Insulation. … AFFILIATE DISCLOSURE: Note that we are affiliated with products and services we use and trust. Applications include residential environments such as a basements or retro-fit garages; commercial environments, agricultural, retail store and industrial applications. Insulating under the floor will prevent drafts from entering via the gap between the floor and the ground. However, we’re going to use sheep’s wool to insulate the walls and ceiling. If Installing Over The Subfloor. We used polyiso insulation for two reasons. (If only we did a roof raise, we would have used this for the floor insulation!). Utilizing the same air gap technology, the R+ subfloor takes insulation a step further with an R-Value of 3, which can raise the temperature of finished flooring by up to 5.6° C / 10.6° F. DRIcore R+ combines high density Oriented Strand Board (OSB) and Extruded Polystyrene (XPS) which helps resist moisture and maintain its R-Value consistently. Another issue we learned about is that spray foam is not necessarily the most eco-friendly choice when it comes to encapsulating a tiny home on wheels. As an alternative, you can install rigid foam board right on the top of the subfloor. From below-grade to above-grade, inside and out, Halo is the rigid foam insulating system designed perfectly for specific applications, including basement floors. IDEAL TO DELINEATE HEATING ZONES Multidirectional tube retention system. If we were to do this again, we would have bought 2-1/2″ self-tapping metal screws because we didn’t take into account that the tip of the screw, which has no threads but has a drill bit tip instead, is included in the overall measurement. In some houses, drainage and ventilation in the crawlspace can also play a role in combating moisture. EXPOL UNDERFLOOR INSULATION EXPOL R1.4 and R1.8 meet and exceed the new Residential Tenancies Act requirements. 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. Our goal is to slow the bridge through insulation. Now that the tongue and groove plywood subfloor piece has been laid down, we then screwed in self-tapping 2” metal screws through all the layers and into the floor pan. We’d start by putting down one-inch, rigid foam board and then 5/8-inch plywood or OSB screwed through the foam and into the concrete floor using Tapcon screws, which are designed for concrete. Underfloor insulation will help eliminate drafts in homes that are raised above the ground (those that have a crawlspace or are set on piers). It is extremely sticky, which effectively seals the seam between the skoolie subfloor rigid board insulation pieces. ANSWER: It’s the tongue & the groove (T&G). Stucco: 7 Minutes of BS (Building Science), Time-Lapse: Pour and Finish an Indoor Slab, Insulated Floating Subfloor, Part 2: Plastic and Rigid Insulation, Building Resilience (3): A Frostproof, Waterproof, Warm, and Dry Foundation, Stucco Repair: How to Close That Can of Worms You Just Opened, The Model ReModel Show: A Humpy Bumpy Foundation, Building Resilience: Doubling a Spanish Colonial in Minneapolis, MN. This facilitates and accelerates installation of both insulation and the floor heating system. Without subfloor insulation, it can make you home uncomfortable to live in due to the cold and draughts that come in. A floor with ducts also should be insulated with a continuous layer of thick rigid foam under the floor joists. Complete coverage is essential; there should be no insulation voids. EPS is, by far, the most versatile of the three rigid insulation options. It comes in individual panels, making it easier to install than blow-in insulation and other insulation types. Any fluctuations in humidity, vibrations and traffic is dispersed across the entire floor reducing the possibility of a board edge popping up above the height of the adjacent board it is up against. The inside of the rim joist is sprayed from the sub floor to the bottom of the rim joist to drop the building envelope to the BOTTOM of the joists. Using Erin’s strategic gluing pattern, she put another bead of PL Premium around the perimeter edge and a creative zig-zag in the middle. "And then we caulked it to the bottom plate with two beads of sealant. thick) applied beneath and spanning the floor joists, held on with cap nails and seams taped, edges sealed with a foam sealant – is a tested good solution. Knauf Insulation Pty Ltd. Head Office: 23 Corporate Drive, Cannon Hill, QLD, 4170 Postal Address: PO Box 244, Cannon Hill, QLD, 4170 07 3393 7300 info.au@knaufinsulation.com But insulating your floors is a good idea for many reasons including energy efficiency and height adjustments. We’ll monitor our floor and if we need to screw more, we could always put in plugs after countersinking the additional screws through the finished barn wood floor applied on top of the subfloor. Or subfloor then Rigid isolation on top of it? The floor method makes sense for your height limitations. Rigid board insulation is the last option we considered. Description Reviews (0) Description. This is because the plank floor floats (i.e it need not be secured) and the Delta FL is rigid/stable. You can see here there's the OSB sub-base, where the spray foam comes over the top of the plates on the right hand side of the picture, that sub-base is thewre because we won't have a sill plate to nail our trim to in the end, and, we wanted something to let the insulators wrap down to that connection. Next, install the 3/4-inch subfloor on top of the rigid insulation. By combining rigid insulation panels and a tubing retention system into a single product, the step of fixing the tubes to a wire mesh or subfloor is eliminated. To use spray foam, first 1×4 or 2×4 furring strips would be attached every 16” to the metal floor pan of the old school bus. We recommend at least 1 inch of foam board. However, considering we already painted the floor a couple of months ago, we simply swept and used a shop vacuum on the floor to clean up any dirt and accumulation. Panel incorporating vapor barrier, insulation and an OSB subfloor finish; quick and easy to install. We ended up going with 1-1/16” rigid board insulation that has a vapor barrier attached to both sides of the board. We learn. Skirting boards and some … What Is Rigid Foam Board? You can attach wood sleepers to the floor, fill the gaps with rigid-foam insulation, and then apply your finish flooring. Using tongue & groove plywood subfloor is preferable because the tongues and grooves slide into and lock together causing the floor to become one unit. Your email address will not be published. If there are any overspray situations, after the spray foam has cured, then you would go in with a saw and trim off the excess spray foam to the height of the furring strips. We're really happy with how hefty it was. Mary, I would cut into the drywall and look at existing insulation. https://www.facebook.com/BEAdventurePartners/k, Read more: The School Bus Conversion Guide | Building a Tiny Home On Wheels », Insulating & Installing Skoolie Subfloor | Smart & Simple Flooring Method. Also, particleboard attracts moisture resulting in it swelling & weakening. It is the DIY solution that will keep your home warm, dry and healthy. Whatever you choose you need to achieve a U value of 0.25. The Amdry panels are designed to include the highest quality surface materials, laminated to rigid EPS insulation, to provide a simple One Step quick, reliable and long lasting insulation solution. Pergo) My question is this: Delta FL claims it is acceptable to lay floating plank flooring directly on top of it. • Foil faced rigid foam insulation (2 in. Want our used school bus visual inspection form? Earn an independent living from your knowledge, skills & passions. A floating subfloor is then installed either directly over the rigid foam insulation (Figures 1 and 2) or over furring strips (Figure 3). Building the skoolie subfloor with a layer of plywood will increase the compressive resistance giving us a strong skoolie subfloor to build upon without having to use furring strips. Subfloor systems eliminate the "cake layer" approach and give you all layers fused into tiles that can be attached to each other—at a higher price than the methods above. Call 1-855-350-4256 today! OSB or Oriented Strand Board subfloor is a step up from particle board in that large swaths of wood strands are laminated or glued together resulting in a sheet. First, we cleaned the floor with a vacuum and mopped with Simple Green, an eco-friendly, non-toxic degreaser. Since we’ve screwed all our layers down, people have been chirping us on social media about thermal bridging from the screws. By screwing each piece of T&G plywood through the GPS insulation board and into the metal floor pan, we are preventing the possibility of the layers from shifting. Let’s have a look at what rigid foam is and the different types, some tips on installing it, and special considerations to keep in mind. GPS is graphite polystyrene and has better insulation value than normal XPS (expanded polystyrene) due to the graphite used in creating the board. After the poly goes in, we're straight to the foam. Insulate an existing slab floor by adding rigid foam insulation over the slab then installing a floating subfloor as follows: Treat any significant or persistent site water management issues that are contributing to basement water management issues first. Required fields are marked *. ThermalDry® Insulated Subfloor Benefits. Replaced by compacted aggregate, "After the aggregate, its out six-mil poly. If the insulation is above the concrete the room will heat up more quickly in the morning. Dow Styrofoam™ Floormate-X is distributed by Proctor Group Australia - T: 1800 174 900. Particle board is probably the least effective subfloor because of how it responds to moisture and construction. If there is space above insulation by the subfloor, then you could cut a strip of drywall to access blowing in a dense pack of insulation. Let us know in the comments below! We also have insulation boards suitable for more specialist flooring applications, for example heavy duty floor insulation and insulation for cellar and basement floors. On October 28, 2020 By Amik. Become self-reliant. The warmth inside our van will be rising. Insulated Floating Subfloor, Part 2: Plastic and Rigid Insulation November 30, 2018 Water and thermal barriers make a warm, dry base for the subfloor to float on Searching some more, we found that spray foam is commonly used in subfloor installation. So the floor is contacted with the coldest air both inside and outside which may result in to lose up to 15% of heating. After that, if you haven’t already, get rid of any rust & paint the floor with a rust-inhibiting paint like Rust-Oleum (we used Rust Coat, which is the Canadian equivalent). Most builders will opt for rigid foam insulation between the floor joist as you can fit them tightly and ensure no gaps are left. 1 Our range contains dual and mono density stone wool products, resulting in an impressive thermal performance that prevents heat escaping through floor and ceiling spaces. The other option is to install rigid foam insulation and water control measures on top of the existing slab.
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