I was thinking a bottom piece of 4 in higher density with maximum ‘recovery’. If I purchased new foam for the cushions, what compression would I need? There are other compression strength evaluations in addition to the 25 percent compression test that can provide even greater insight into a material. Is this possible? Even samples cut from the same bulk form can record different scores if the sample sizes tested are not identical. We would suggest our Lux-HQ foam for your application. We love the sectional, but the foam in the seats have already worn out and are mushy! Sarah Stevensob. Company Site. These soft materials are often used as a part of a pressure relief system, be it in seating pads, mattress toppers or chair backs where comfort is the goal. We would suggest our firm Lux-Regular or firm Lux-HQ foam for your application. I have a Bassett leather sectional sofa and one of the modules gets the most wear. The yoga blocks are about 700/800mm of very dense foam and I need it in sheet format. Please Contact Usfor information on what foam will work best for your application. Hello, If I sliced foam in half to be thinner would it still have the same compression & density qualities? The mechanical strength of EPS varies with its density. Tags: Foam Firmness, Foam Hardness, Foam Testing, ILD, Technical. The beneath layers will be of stock thickness(s) and replaceable as they deteriorate or required of a persons weight differences. Our calculations show that either our 2.2LB polyethylene or our 2LB cross-linked polyethylene would give you the results you need. Foams with these ILDs are firmer but still can provide pressure relief, so they are often made into a pillow or angle-boosting body wedges. We are thinking about replacing the seat cushions in our large sectional. If you need something with higher compressive strength, XPS with a … Cushions will be partially exposed to weather (under a bimini top) so I plan to use Dry Fast foam. inch; R-value – R7 per inch; Thermal resistance/heat retention – 72% @ 1”; 81% @ 1.5”; 90% @ 2”; 96% @ 3” Stop leaks @ 1” Eliminate condensation @ 1.5” Best energy payback @ 2” ELASTROSPRAY FE-348. The foam that I would suggest for your application is our Super Max Foam. Compressive strength or compression strength is the capacity of a material or structure to withstand loads tending to reduce size, as opposed to which withstands loads tending to elongate. The effects of foamed concrete density, cement type and content, water/cement ratio, foam type and curing regime will influence the compressive strength. If the foam is to be 3″ deep, what density would be required so that and adult of 200lbs would not compress the foam more than 1.5″ when sitting on the bench? For closed cell foam, no less than 1/2″ in thickness. I am worried Lux HQ might be too firm for her. You can price out and customer order this cushion on the custom seats and cushion page of our website. 5″ or greater, we would suggest our medium HD36 foam. There are many varieties of foam strength testing, but the primary one is the 25 percent compression test. Closest foam we have available is our 3lb cross linked polyethylene foam. This value rates a foam’s feel and firmness by testing how it yields to or supports applied weight. ILD values in the 50s and greater are the most supportive and firm foam materials. You can price out and custom order that cushion on our seats and cushions pageseats and cushions pageseats and cushions page. Please contact us directly for information and pricing. Copyright © 2021 Foam Factory, Inc.. All rights reserved. I need a 1.2meter X 0.4Meter foam to withstand a load of 4tons at 50% compressibility. Super Softfoam is recommended for back cushions. My husband needs something softer but still more supportive than the soft talalay latex we have now. Neoprene is too stiff in any thickness tho it’s good for edge support. I want to use a foam rubber core with a feather blend top and bottom-what should I be using for the core? They don’t get rained on, but of course are subject to humidity and cool temps. I need a piece of foam that is 13.25 inches thick, 20 inches long, and 19 inches wide that firmly supports weight up to 200lbs. iIs this the wrong combination.? Maintaining this consistency across every test is important because foam materials can bear weight and pressure differently depending on thickness and size, even if the sample is cut from the same bulk material. For static loads, 3:1 is suggested. I am 220 lb 5’10. Would it be safe to say that if I needed polyurthane foam for a Physical theraphy table top that would support 200 pounds very well; it could be 2″ thick and have a 26 density and about 45 compression? Compressive Strength, ASTM D1621, Parallel to rise, psi 11.9 Apparent Density, ASTM D1622, pcf 1.3 Dimensional Stability, ASTM D2126, % Volume Change 100°F/100%RH@1wk 15.8-40°F/ambRH@1wk -0.04 Open Cell Content, ASTM D2856, % <12 Tensile Strength, ASTM D1623 Parallel to rise, psi 18.1 Elongation, %, “Test immed. I am in the process of converting an 2 existing futon mattress (twin) made of cotton layers into a tufted mattresses that can be stacked up and used as a daybed or opened up into a larger bed. Would the Lux-HQ be too firm? Most ILD values fall somewhere in the range of low teens up to the 60s and 70s. A common question with rigid foam insulations is how well it resists water. Last time I went for physical therapy and found that table very comfortable. Need to know what compression of supporting foam to use. Another test that can be conducted is support factor, also called sag factor or compression modulus. It has 2 types of foam and corrugated zig-zag suspension spring suspension. For medium, go with our HD36 foam. I’m looking to modify a stock motorcycle seat on my Honda Fury cruiser. For firm, go with the Lux foam. Thanks in advance! This is the test being referred to anytime foam is stated to have an ILD value. What foam would you suggest for a 250 lb. Hi I have a bench that is 18.75 inches high. It must be comfortable for a 200lb person to sit on (on a hard surface) for at least an hour, and a 12″ x 16″ x 3/4″ piece must weigh less than 1 once. In 3 key fire tests - ASTM E84, NFPA 285 and NFPA 286/UL 1715 - polyiso performs exceptionally well. I would suggest our HD36-High Quality foam for your application. Materials with support factors around 2 or higher are considered to be more supportive products. You can price out and order custom cut cushions for your couch on our website. What type of foam will hold up under such frequent use? It could work, as long as you drill holes, about 1″ in diameter, throughout the closed cell foam layer. These are most commonly used in seating cushions that bear the full weight of a body centered on a smaller area, automobile seating and the firmest bedding materials. Your email address will not be published. It is to be used as a cushion at our home. I am restoring an antique Morris chair. The most important mechanical property of EPS insulation and building products is its resistance to compressive stresses, which increase as the density becomes higher. Thank you! Sincerely, For medium foam, we suggest HD36-HQ foam. I want a foam cushion that when compressed will be standard chair height of 18″. I would suggest either our Lux-Regular or our Lux-HQ foam for your application. These materials are used predominantly as a pillow or in body wedges where the product needs to support weight while offering the most comfort. I wanted to give the current futon more support and was thinking of using a foam insert sandwiched in the middle of the existing cotton. Our Lux-HQfoam is what we would recommend for your seating application. Any suggestions. As the main method of testing, if a material is simply stated as having an ILD value of “Z,” that refers to its 25 percent compression test results. The modeling was done in LS-DYNA . Rebond foam or Super Max Foam is suggested for your application. My question is this.. Do you have a chart that summarizes/categorizes the technical ratings/parameters of your various foams so we can proceed from this excellent discussion to making an informed choice of a specific foam? Do u know what type it is. Thanks. They have a tensile strength of 65-75 psi, compressive strength of 45-55 psi and R-value of 6.9 per inch. The dry density of foamed concrete may vary from 300 to 1600 kg/m3. Overall, the prepared PP-β foam with excellent mechanical properties using this approach would have promising engineering applications. However my mother-in-law in slight: 5′-8″ and 110 lbs. Suggestions appreciated. Thanks! But, keep in mind that I will lose about 15 lbs after the holidays, if that makes a difference. I have a glider that has 4″ seat and 3″ back. We want a 3” cushion that will compress comfortably about halfway under a 170 lb. These products are often used in a pressure relief system as seating pads, mattress toppers and chair backs where comfort is the exclusive goal. Compressive Strength. Assuming a 17″ seat height, I need a 4″ booster when compressed. But alas, that’s even more complicated. They formed quickly but compressed to nothing after an hour. We are building a banquette in our dining room. What foam would you suggest? For the foam of 62 kg/m3density compressive properties were determined in a 10 kN force range, 15 mm displacement range and a testing speed of 5 mm/min. Which one will work the best to not feel the edge of the seat? What would you suggest? This is a difficult request, because with foam typically the lighter density is a lower quality foam and / or is very soft. FOAMULAR® 150 has a compressive minimum PSI of 15 FOAMULAR® 250 has a compressive minimum PSI of 25 FOAMULAR® 400 has a compressive minimum PSI of 40 FOAMULAR® 600 has a compressive … However, the foam will provide less support, so you will feel the hardwood floor more with less foam. The other consideration for sub-slab use is the foam’s compressive strength. I prefer a hard and supportive foam, perhaps with a cushioned layer on top. I weigh 200 lbs. I am also using memory foam for the top layer. How boring guys like me are trained to go into considering a material or product for integration into a system under design. I used HR foam as a top layer on my side in 2014 and it is still going strong. The closest match I would say is our 1.2lb density polyethylene foam. If I chose to replace, what foam would you advice? Hi. Anything thicker will need to be layered together and glued. When evaluating a foam product for use in a comfort application, perhaps the most useful testing value for determining its usability is compression strength. I am planning to have 4″ foam so that final thick will come down to 2″ by the time applying the 4MT load. The top layer will be the near molded form of the persons butt, (similar to a tractors seat). The foam that would closely match your requirement is our HD36-Regular or HD36-HQ foam. Yes, you could go with that foam type for your application. Frequently included along with the 25 percent ILD data is a 50 percent compression value, which is a measure of the pounds required to compress a foam sample half of its height. Hi – I am interested in buying a sheet of HR foam, 3 inches in depth, to replace a top layer on my husbands side of our diy latex mattress.