→. g. Fire Resistant Vermiculite Board is refractory to 1100°C with very good insulation properties. Pre-fire vermiculite boards at 55ºF (30ºC) above process temperature. The insulation boards from vermiculite present no risk to health and do not contain asbestos, mineral fibres or glass. Because vermiculite board uses expanded vermiculite as the main raw material. Clear plastic bag or a bell jar : Cut stems just below a budVermiculite Fire Boards 16mm Rustic Antique Brick effect x2. Skip to content. Vermiculite CAS No. Place the cutting into the soil and gently press the soil around the stem. 1 yrs CN Supplier . Tue 7am - 5pm. . This pack contains four exceptionally high-quality Micore-300 boards. The common used vermiculite board size is 610x1000mm and thickness of 25 mm. Re: Cutting Vermuculite Board. Plastic Boards. 25 (inc VAT) £ 72. Vermiculite Micafil is as an excellent thermal insulating material capable of withstanding temperatures in excess of 1000C. DIY vermiculite baffle board. Vermiculite is a natural mineral that expands into lightweight, fire-resistant and absorbent, odorless and wormlike forms when heated. Hand cutting Joining Surface ˜nish HPL - High pressure laminate CPL- Continuously Natural veneer Natural veneer with pressed laminate transparent melamine Edges and end pro. I dust my boards with some alumina hydrate and they need no kiln wash. The only catch is that the easy sources all want to sell you a case. 00. 2 4mm Vermiculite Board (117 products available) Gold Silver Expanded vermiculite for Horticulture and Board, Plate $5. The Mi Flues Screw-FIX Insulation Back Filler is a new concept to make the job of back filling your chimney with vermiculite as easy as possible when using a. ADS Stove Spares brings you a simple, easy to follow guide to cutting your own fire brick using. VERMICULITE FIRE PROFF AND INSULATIONS BOARDSvermiculitejyothi@gmail. 30 minutes before initial use. 10 posts • Page 1 of 1. Backfill for firebacks and boilers. Skamol Vermiculite board V-1100 (600) A high-density vermiculite board that can withstand temperatures up to 2012°F (1100°C). 8 yrs CN Supplier . Asbestos products, like cement sheeting and vermiculite, were used in ceilings before 1990. The 1100 C is a light weight board which has been developed for general insulation applications with a density of 350-450 kg/m3. PURPOSE: A material supplying and pressing device of a vermiculite board manufacturing apparatus is provided to simultaneously supply materials to a mold and press materials without an additional pressing unit. Vermiculite is softer then perlite and will compact some what. handle and easy to install. Bright indirect light between 10k – 20k lux or 2k – 5k foot candles is best. More details. In the United States, an estimated 27 million workers were exposed to aerosolized asbestos fibers between 1940 and 1979 [Nicholson et al. This product is clean to handle and easy to install. Vermiculite Boards Fireplace Fireproof (95 products available) U groove vermiculite board fire insulation board for wood stove and fireplace liner decoration and fireproof $6. According to Healthdirect Australia, exposure to asbestos may increase the risk of asbestosis, mesothelioma, lung cancer, pleural disease and other types of cancer. The vermiculite boards are ideal for insulating wood stoves and fire-places. Activity: can be corrupted by strong acid, and no hazards occur in the corruption. 3. 0. Available in a number of thicknesses and densities. Included Warranty & Technical SupportVermiculite boards are absolutely harmless to your health, they do not contain any organic substances. Fitting & Cutting Instructions Care should always be taken when fitting and handling fire bricks as damage. The EPA (Environmental Protection Agency) recommends that if you have vermiculite, it’s best to assume it contains asbestos and leave it alone. Consumer Product Safety Commission (CPSC) banned the use of asbestos in wallboard patching compounds and gas fireplaces because the asbestos fibers in these products could be released into the environment. 35 lb/linear ft . 3 yrs CN Supplier . by Brad Walker » Wed May 06, 2015 1:11 pm. These past exposures were heavier than what workers face today. Vermiculite is used in the garden or potting soil to help aerate the soil and increase water and nutrient retention. When it comes to water, it droplets are easily resistant to water, and builds up over time. Standard Ceramic Insulation Board grades are standard, high purity, and zirconia. By using of a modern technology We make the high quality product - the boards retain their structure, don' t crumble and crack. If you are planting several cuttings in one container, space the holes 2-4 inches apart. Worryingly, other commonly building materials have been found to contain asbestos. , Wheeler, R. We manufacture high quality exfoliated Vermiculite for horticulture, agriculture and packaging. 88 - $1. Especially VIP-12 ALU has been designed to function as a semi. 30. According to the present invention, the molding apparatus to. Pipe wrap . For the whole job, when using vermiculite for the insulation that is, I buy 7x 100 Liters bags (larger bulky but lightweight paper or plastic bags. Vermiculite boards are absolutely harmless to your health, they do not contain any organic substances. Coarse sand helps improve drainage in homemade potting mix recipes. Product code: HS-364 Manufacturer SKU: VERM-BD/1000X25. If you. Min Order: 40 bags. 40" x 24" Vermiculite Board . Vermiculite is a suitable potting soil mix addition to grow plants without soil, germinate seeds, or root cuttings. 6X8 = 10. Versatile insulation vermiculite board available are well-suited for agriculture and construction sectors. Heat Proofing. Sukh 14. Vermiculite Board is non combustible. Should I have it removed before or after I buy the house? Removal of the vermiculite insulation may not be necessary if it is confined in a manner where it willChoose a small pot with well-draining soil, and make a small hole in the center. Product information of Vermiculite board for Stove Fire Bricks:. Both retain a lot of moisture and improve drainage. Super Firetemp and Super Calstik. PURPOSE: A mold cleaning scraper of a vermiculite board manufacturing apparatus is provided to perfectly clean residual foreign materials on the surface of a mold by moving a material supply and pressure apparatus on a board molding apparatus. Automatically watered rose cuttings in vermiculite rooted better with thebase of the cuttings 1/2-3/4 Inches above theWhen to Propagate. These help absorb punching forces, while also protecting. Angle grinder with stone cutting blade Electric jigsaw or handsaw Hammer and bolster chisel Electric drill and drill bits Wheelbarrow. 14 yrs CN Supplier . Use Primo Primer as primer for shelf use. 4822132. REFIAL® is the innovation oriented company, which. comcon/ what's app 99636394819963639482Vermiculite is a mineral which expands when heated, much like popcorn. Drolet Myriad 3. 0In the past, many occupations entailed exposures to asbestos (see table below). Best Plastic for Meat: Dexas Polysafe White Cutting Board. JenniferBvermiculite board vermiculite plates for stove asbestos free vermiculite fireplace $500. Gently remove the cutting from the vermiculite, being careful not to damage the delicate roots. (Vermiculite is not a type of clay) Related products. 1. Amandus, H. Silica is a very abundant material in a variety of forms andWhen lining the complete inside of a recess the board I always used is 12mm Hardiebacker cement board about £12 a sheet 1. After the foundation wall concrete had set I built a frame to contain the oven foundation concrete. We are the direct manufacturer of the ThermoVerm vermiculite boards. For use on top of stoves and around flues. 00 - $1. Best rooting in automatically watered vermiculite was obtained with the base of the cuttings one inch above the water level. Vermiculite is an excellent choice for amending the soil of moisture loving plants because of its water retention properties. This forum is for questions from newcomers to kiln-forming. Slow cool blankets . Share +. CONSTITUTION: A method for manufacturing vermiculite board, which compresses and heats vermiculite. These builders will use a 5:1, 6:1 or 7:1 parts insulator to one part concrete to build their hearth and “skin” the pizza oven dome. Best Prices for 25mm Vermiculite Board Across the US Online Stores Scanned Every Day! Easy to Use | Free | Trustworthy Recommendations | Find your deal now!Vermiculite is a popular insulation material that can contain asbestos. Easy to cut , does not expand. Min Order: 1 piece. The John Boos Maple Cutting Board (also called the "Boos Block") is the priciest board in our roundup, but it's also the most stunning. About the Fabric Weave: Silica needled mat (SNM) insulation with aluminum coating Color: Mat. Add to Wish List. 1. 2X8 = 2. Vitcas Vermiculite Fireproof Board. If you can't get the part, sometimes you have to make it. 2X12 = 4. Call Us . Our Ceramic Insulation Boards are manufactured through a wet forming process using alumina-silica fibers and binders. This product is clean to handle and easy to install. The Everyday Board included here can be purchased individually or as part of this multicolored set. This is an extremely innovative product for. 0 HAZARDS IDENTIFICATION Routes of exposure: Inhalation of mechanically generated dust during cutting of the boards. Whether the task at hand is chopping vegetables, carving meat, or prepping a fruit garnish for cocktails, there's likely the perfect cutting board for it. It can used it act as drywall, to the ceiling, to floor or any box up area that can't build it on block wall or RC wall. The Vitcas Fire Resistant Vermiculite Board is available in two styles, brick effect or plain. Plastic Boards. Click for: 30mm Vermiculite Board | BULK BUY Vermiculite Board | ALL Vermiculite Board A high-density vermiculite board that can withstand temperatures up to 2012℉ (1100℃). Usually, you can simply snap off the leaves. Vermiculite board. 90. The non-combustible GRENAMAT A board is made of only natural materials - exfoliated vermiculite and special inorganic binder. Mar 27, 2021. Low density asbestos fibre boards. 2X10 = 3. OXO also offers a large carving board, our preferred size for special occasions and large tasks. com. Vermiculite is an old-fashioned, inexpensive Insulator. 0 /5 ·Vermiculite CAS No. The use of vermiculite plates is. 4. Vermiculite - Micafil 100L pack. 28 lb/linear ft . Prefire to 1580 degrees F (860 degrees C) for min. Post Reply. Super Firetemp L, M, H, X, and S boards are an inorganic, noncombustible, high-temperature insulation for use in fire protection systems. I particularly want to be able to fuse a composite of several pieces of glass into a disc or circle. Vermiculite board. Plain Vermiculite Fibreboard Thermal insulation Panels Sizes Available: - 15mm, 20mm, 25mm and 30mm boards. If you are planting several cuttings in one container, space the holes 2-4 inches apart. Work it like wood. Vermiculite On Sale at Ireland's Online Garden Shop. 10 lb/linear ft . You cant tighten the screws very tight as they will pull thru the ceramic board. 1 cu m = 100L) 1 cubic meter = 264. The cement board is smooth (one side smooth, one side slightly textured) and can be painted with bog-standard emulsion. Vermiculite is a better insulator, but I would just eliminate lamellar annealing. The options avilable provide the customer with more flexibility regarding design and expression of their stove. 3 Thyme & Table 12" x 18" Herringbone Cutting Board Chevron Pattern Made of Bamboo Thyme & Table 12" x 18" Herringbone Cutting Board Chevron Pattern Made. Depending on the selected plant, perlite / vermiculite is used either in pure form. Dip the cutting end in the rooting hormone and place the cutting in the hole without rubbing the rooting hormone off. 10. 1. Or moist from time to time. Ceramic boards are Alumina-Silica insulating boards and blankets are the most efficient material. SBI Vermiculite Board for Wood Stoves - Pac. Fill the pots a quarter-inch to the top with this mixture, and then poke a hole in the center of each pot with a chopstick or pencil. This is really good for raising things like pelargoniums from seed that need some free-draining compost to really get them going. 1. Genuine OEM US Stove Company (USSC) Vermiculite Baffle Refractory Board With Herringbone Pattern. This Micore-300 Mineral Fiber Insulation Board features slag wool mineral fiber construction for extra safety and durability. The product composition allows for easy cutting and shaping using ordinary wood working tools such as: WOOD SAW, WOOD CHISEL, SHARP BLADE for shaping. On jan 10 I put 3 cuttings in 50/50 vermiculite and light soil and the 1 cutting I used 100% vermiculite and soaked it. CONSTITUTION: A manufacturing method of vermiculite board which anisotropy is improved comprises the following steps: preparing vermiculite. Miami, FL, 33131. See below. 0. When used as insulation, vermiculite tends to be pebblelike and light brown, poured loose between an attic's floor joists. The panels are produced with a moulding tool that provides a pressed skin surface improving the integrity of the board against general wear and tear. Forum; Pizza Oven Design and Installation; Tools, Tips and Techniques; If this is your first visit, be sure to check out the FAQ by clicking the link above. It is very easy to cut into any shape needed. Contact Supplier. The vermiculite boards are ideal for insulating wood stoves and fire-places. Min Order: 100. Fireplace brick vermiculite board construction fireproof vermiculite wall board vermiculite plates for stove $20. Skamol V-1100 (600) and V-1100 (700)PURPOSE: A manufacturing method of vermiculite board which anisotropy is improved is provided to enhance insulation effect of vermiculite board by improving anisotropy of the vermiculite lattice layer. Fast Delivery. Bullseye Vermiculite Board 1 x 24 x 36 A high-density vermiculite board that can withstand temperatures up to 2012°F This board is stronger than most fiberboard and can be cut and tooled just like wood . Max Temperature. The basic information about Shenzhen Bluewind Vermiculite Products Co. 00 / piece. Wood Stove Cutting Size Vermiculite Fireproof Baffle Board. Amazon. (Subscription required. Active since 1995, Hearth. $6. 4. 2X8 = 2. Our high density vermiculite insulating boards are clean to . My previous stove had the Ceramic Blanket on top of the Baffle board. com. Sizes: 600mm x 600mm x 25mm – Quantity 2. Vermiculite board is a pretty old-fashioned material in the states. size or shape of boards made to order, minimum order quantity 90 № standard size boards. – Remember I showed you how to root lavender cuttings? This is the same technique! Photo above: mix your vermiculite and perlite. Soak the brick in water for 2 minutes, or until the air bubbles disappear. It comes in the popular standard size of 2100mm x 900mm and 4 standard densities (450, 500, 550, 600 kg/m3). The Fire Boards have excellent thermal insulation properties. Our cut to size service allows us to make vermiculite boards to the size you require. Grain of Salt: Expensive, hand-wash only. They can be easily cut to size to suit any requirements such as replacing fire bricks. Plates 100 × 100 × 9. Catalog Grenamat A marine;Vermiculite boards are absolutely harmless to your health, they do not contain any organic substances. They are free of asbestos as well as glass or silicate ˜bers. The product composition allows for easy cutting, machining and shaping of all board types on site using ordinary wood-working tools. Vermiculite fire bricks are non-combustible. PURPOSE: A method and apparatus for manufacturing vermiculite board are provided to improve the durability of a vermiculite board, and to reduce manufacturing cost according to the reduction of manufacturing time, thereby improving productivity. Installation instruction: 1. 50 - $4. Flower arrangementsAsbestos insulation removal costs $10 to $25 per square foot, depending on the area size, condition, and accessibility. A Styrofoam container can hold more potting mix than the plant needs. Activity: can be corrupted by strong acid, and no hazards occur in the corruption. Easy to cut and very stable and strong. We show you how to replace the Vermiculite fire board panels on your wood-burning stove in the Contura 500 Style series. For. Estimated Cost: $10 to $20. Vermiculite Crystalline silica, respirable 1318-00-9 14808-60-7 0 - 4 % <0. Ideal for wood burning stoves which are easy to cut to make your own fire bricks and are available in a number of thicknesses. Sand, perlite, and vermiculite-perlite blends are all potential alternatives to vermiculite. 4 x 25. The use of vermiculite plates is aimed at improving the thermal insulation for both personal and industrial purposes. Add to Compare. A wide variety of vermiculite boards door options are available to you, such as application, after-sale service, and project solution capability. Before Getting Started. Vermiculite Fire Board (207 products available) High density Fire insulation vermiculite board used for furnace lining $10. Mix perlite into seed and cuttings compost at a ratio of 50:50 to create a moist environment perfect for delicate seedling roots. 6 /5 · 2 reviews ·Sample exposure control plan for cutting small amounts (<3 m2) of gypsum board containing asbestos. 6–10. 4 x 10. The fibre boards are quite soft – you can leave a mark with your fingernail. Max Temperature: 1200 Degrees. Pros and cons of vermiculite or perlite: Many do-it-yourself pizza oven builders, as well as importers of authentic Italian brick ovens, are big advocates for using vermiculite or perlite mixed with concrete. publish time 2019-04-03 16:16. Contact Supplier. Vermiculite bricks are cut from a pressed board. The cutting should be inserted in the rooting medium with the bud about one-half inch below the surface. The. 2X4 = 1. The color of vermiculite is a golden brown to a dark brown, and it is sometimes difficult to tell from the potting soil it’s mixed with. Heat Proofing. If you are looking for a ceramic fiber. Moderators: Tony Smith, Brad Walker. Best Prices for Vermiculite Board 25mm Across the US Online Stores Scanned Every Day! Easy to Use | Free | Trustworthy Recommendations | Find your deal now!. We Carry A Large Selection Of In Stock, Ready To Ship, US Stove Service Parts. Ravens Park, Victoria Rd , Leeds, LS14 2LA, GB. The cement board is smooth (one side smooth, one side slightly textured) and can be painted with bog-standard emulsion. Non Combustable, Heatproof, Heat Resistant Fireboard - Easy to cut Fire Board to make stove bricks. Best Flexible: Cooler Kitchen Flexible. Add more potting mix to the top of the soil to help hold the cutting in place, then pack the soil around the cutting to ensure it doesn't move or shift as the roots grow. home >> products >> vermiculite board. Bert Weiss wrote: I once made a putty by mixing vermiculite board sanding dust with colloidal silica hardener. So you should make sure both sides are smooth before using. Fireproof Vermiculite Boards (255 products available) Asbestos free fire rating A3 1200kg/m3 10mm fireproof vermiculite board 1. Knowing how to use vermiculite and perlite in the garden can help your plants, soil, and other uses for natural gardening. Only 20 left in stock - order soon. Has been maybe month, month and half these have been in there. This board is stronger than most fiberboard and can be cut and tooled just like wood. Vermiculite Fire Board for cutting bricks for stoves & fires, pizza ovens & barbecues. When water is added to vermiculite, the flakes expand into a worm-like shape and act like an absorbing sponge. Not only does it work hard during its lifetime but when you have finished with it you can put it on. Space seedlings well apart to allow for strong growth. 35 lb/linear ft . You may need some. Firm up the medium around it and water thoroughly. Add to List. Vermiculite boards for insulation and thermal stability. A wide range of fireboard for stoves and fireplaces made by Vitcas Decorative, accumulation, heat resistance and insulation boards and rings Check offer! The right leather work surface will help protect the tools and lead to quality pieces. Contact Asbestos Environmental today. In January of 2005, we established a special factory for vermiculite materials. Share. Once you've cut your circle you can sand the rim smooth with coarse sandpaper. If you have any questions please contact us directly. Boards are available in a variety of temperature ratings, dimensions, and custom vacuum-formed shapes. Added to my gardening board to. Remove the bottom leaves leaving only two leaves near the top of the cutting. The main benefit of vermiculite is that it can both hold on to water, and attract some nutrients beneficial to plants. Make reservations online or call (786) 441-1234 or 877-803-7534. First, separate the cloves from the bulb, and then place them in a single layer on a cutting board. Adhesive &. 0It can be used for planting, seedling raising and cutting of precious flowers and trees, vegetables, fruit trees, potatoes and grapes, as well as making seedling substrate, flower fertilizer, nutrient soil, etc. 3. 00 price including tax Add to cart. When either perlite or vermiculite are used exclusively, vermiculite is better for germinating seeds and perlite is better for establishing cuttings. Surface finishing, milling or cutting available on request (see our catalogue). Get cut to size vermiculite fire board sheets from us. Vermiculite Boards Vermiculite board is a refractory material made from exfoliated vermiculite and special inorganic binder that provides a high degree of heat resistance to temperatures up to 1100 degrees C and heat shocks. Moderator: Brad Walker. Coleus rooting in water is not typical. 5cm vermiculite fire brick sheet/fireproof board. 1318-00-9 Mineral binding agents. Stove Rope Seals & Gaskets. Adhesive & Matt Black Paint Option. It can also be sanded. Available in 15, 20mm, 25mm and 30mm thicknesses. On top of 10mm wood, it is a highly resistant material that can resist water droplets on all surface types. This pack contains four exceptionally high-quality Micore-300 boards. Super Firetemp and Super Calstik. Work with vermiculite is not considered harmful, according to GOST 12. lamellar annealing is the process of slow cooling from over non-magnetic temperatures to produce lamellar carbide, or pearlite. Min Order: 1 piece. You may have to register before you can post: click the register link above to proceed. Benefits from Sunrise Vermiculite board: Excellent heat balance inside the electrolysis cells, due to excellent insulation properties; Quick & Easy Installation; Minimized specific energy consumption; Reduced relining time and maintenance costs;1m 3 = 1000 Liters (0. *NEXT DAY DELIVERY* For more accurate delivery estimate, postcode is required. Best Plastic Cutting Board Overall: OXO Good Grips Carving & Cutting Board. Sold in FULL or HALF or QUARTER SHEETS, 25mm Thickness | Plain & Smooth PLAIN & SMOOTH fire resistant Vermiculite Sheets, tested to 1100 degrees Centigrade. comcon/ what's app 99636394819963639482Our core purpose is to beneficiate the specialty mineral Vermiculite at source and to substantially contribute to the economic and social development of South Africa. A Styrofoam container can hold more potting mix than the plant needs. vermiculite board. What it is: A lightweight, shiny mineral that resembles mica flakes. Accedi Registrati gratis. Super Firetemp L, M, H, X, and S boards are an inorganic, noncombustible, high-temperature insulation for use in fire protection systems. “Kandhari” stem cutting under mist. $820. Hand cutting Joining Surface ˜nish HPL - High pressure laminate CPL- Continuously Natural veneer Natural veneer with pressed laminate transparent melamine Edges and end pro. Cutting rooted in vermiculite (Picture courtesy of Pull) Vermiculite is always used in the horticultural sector in its exfoliated form and it has the benefits of improving soil aeration while retaining moisture and nutrients to feed roots, cuttings and seeds for faster, maximum growth. Photo by Kristine Lofgren. publish time 2019-04-03 16:16. As an optional step, apply a powdered or gel rooting hormone to the trimmed end of the cutting and to the area. Use a ruler and a piece of white chalk to mark a cut line along one surface of the brick, placing the line at the measurement and angle you determined. 0 lb/linear ft . Expanded vermiculite has unique and versatile characteristics; it is lightweight, provides energy savings when used as insulation, it is non-combustible, highly absorbent, pH neutral, inert, non-reactive to all but very strong acids and compressible. 2m x 0. 30. Sometimes, Vermiculite bricks need to be cut from pressed boards You can easily cut bricks of the requisite size by placing an old brick on the board, drawing around it and then using a wood saw to cut it to the desired size. Considering that in the past I have messed up some cuttings using peat moss (too much water), this seems like a reasonable idea, but I wanted to hear your comments about this. The vermiculite boards are simple and rapid to apply: they can be easily cut, drilled, punched, sanded and screwed. They can be easily cut to size to suit any requirements such as replacing fire bricks. Min Order: 1. Professional growers buy perlite wholesale in larger bags, but these can be a bit bulky for the consumer. Place the cubes in a nursery tray and cover with a humidity dome to lock in moisture. Product code: HS-364 Manufacturer SKU: VERM-BD/1000X25. 2X10 = 3. Not recommended for use as kiln shelf. Fiber Paper 1/16in Thick 24 x 24in Sheet. 7 yrs CN Supplier . Adhesive &. 39K views 7 years ago. Vermiculite Fire Board for cutting bricks for stoves & fires, pizza ovens & barbecues. Pencil or other object slightly wider than the stem of the cutting 6. #. Best wood cutting board: Teakhaus Professional Cutting Board ($95. Prepare the Container of Soil. With the aforementioned example, you’d place your ruler 3 in. Vermiculite board can be cut or tooled like wood or particle board. 1K;. Vermiculite is a micaceous, naturally occurring mineral that looks like small brown flakes; it is commonly used as an ingredient in soilless growing mixes, says Niki Jabbour of SavvyGardening. It can be used in various ways, either used alone, mixed with soil, or combined with bark for a soilless potting mixture. →. 58M; 1. R 329. Coarse sand helps improve drainage in homemade potting mix recipes. SECTION 8: Exposure controls/personal protection 8. Add to Cart. 3 yrs CN Supplier . Best Plastic Cutting Board Overall: OXO Good Grips Carving & Cutting Board. 30. The density of. punching on the side of wood the wood compresses either making it harder to cut a clean hole or giving you a distorted one, but not with this 3. If you are a professional or experienced DIYer with a wood-burning. After 3-6 months, prepare your bougainvillea. ) Next, push the cutting into the moist vermiculite so the node is just below the surface. Best to get a new board but in a pinch you can improvise. 5. While it is a great material, there are some potential substitutes that can be used instead. R 329. The boards when installed and dried can be painted with Heat Resistant Paint to your choice of colour. Low-density asbestos fibre boards look similar to asbestos-containing <cement sheeting> or plaster board. Vermiculite boards are absolutely harmless to your health, they do not contain any organic substances. . We recommend careful handling to avoid Damage to the boards. Plant into Gro-Sure Seed & Cutting Compost or a mixture of this compost with 25% to 30% of Gro-Sure Vermiculite.