Access a complete list of APA publications about plywood in APA's Resource Library. The APA Product Support Help Desk is a free service available to answer your questions pertaining to the specification and application of engineered wood products and systems. MDO and HDO are names the plywood industry uses to describe overlaid sur-faces. MDO means “Medium Density Overlay” and HDO means “High Density Overlay.” During plywood pro-duction, these overlays are bonded to the plywood under high heat and pres-sure in a press. �'Pq?�ILJ�U�{=��M���u�;��cv"�jjr!H��.B�@]������L��G)0��r�����b��9��㫖���=z,ҿ�����#�f�X1W�f��������/J�f����F�g�S�᮹Q�A���'co�T�ų+. HDO is manufactured with more resin than MDO, but both are far more durable than standard plywood and are ideal for use in the most punishing of applications. CLASSIC HDO CONCRETE FORM 3/4" - 4x8 - 100/30 1 side Sold by the piece or Unit - 66 pcs per Unit. Crown HDO panels are APA certified Struc-1 and meet or exceed APA’s Product Standard PS 1-09 for HDO Concrete Form. The leading resource for information about engineered wood products. HDO and MDO feature highly durable, resin-impregnated fiber faces. For in-depth information about HDO and MDO concrete forming and other applications, or to find manufacturers, visit APA's Performance Panels site. Hotels, high rise office buildings, museums, power plants, civil projects, and large-scale residential projects are common applications for HDO concrete forming panels. HDO plywood is bonded with 100 percent waterproof glue and has inner ply construction of C- or C-Plugged grade veneer. Plywood sold as "void-free" does not have voids hidden in the wood layers. Visit PerformancePanels.com for complete lists of APA Manufacturers of Overlaid Panels. Product Guide: HDO/MDO Plywood This publication describes High Density Overlay (HDO) and Medium Density Overlay (MDO) plywood applications, properties and characteristics, plus shop practice and finishing recommendations. Engineers have rounded-off weight calculations for plywood to square foot calculations, and have decided that, for engineering purposes, a generic square foot of 3/4-inch-thick hardwood plywood weighs 2.3 … Sanded The high-grade of sanded plywood faces provide a beautiful finish-quality surface for all kinds of applications. Medium-density overlay (MDO) plywood is a specialty plywood designed for heavy exterior use. Brand Name: Roseburg. 1 0 obj
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In addition, they retain plywood’s advantages, such as high strength-to-weight ratio, dimensional stability, and rack resistance, as well as plywood’s design flexibility. Both may be reused for concrete forming many times, but HDO has a longer use life. 3/4 thick plywood will weigh about 2.5 pounds per square foot (PSF). Roseburg's Duragard Premium MDO is a panel that has a layer of hardwood veneer directly under the smooth resin (water resistant phenolic) impregnated … The overlay weight is not less than 60 pounds per 1,000 square feet of panel surface. How heavy the plywood is The weight of a plywood sheet will proportionally increase with increasing in width, length and thickness. Panel Construction/Moisture Resistance: Basic HDO™ is high-density, 100/30 overlay on plywood with Douglas Fir/ Hemlock construction. It is an economical panel that balances cost, multiple reuses and concrete appearance. APA trademarked High and Medium Density Overlay plywood (HDO and MDO) combine the toughness of Exterior-type plywood with the superior wear of an overlaid surface. Make an Inquiry for HDO Plywood at OKorder.com. Concrete forming grades are both ideal for reuse under the harsh conditions of concrete formwork; HDO leaves a smooth "steel-form" finish while MDO leaves a matte finish. Choose from 8, 9 or 10ft lengths, sanded, marine, sheathing, siding, MDO and HDO- We're like a super market for plywood! a�4n�_�X��Vu�+ٺ|�; +Ņh9䓇�E���T�� 1��ѱ�^"��M����\b��ش&_�e�u�Wmc���t��1[v'��!>�䫌��+Q�x_���P�h9Fj|��"���#�)��R�RA�V'xc�rY�#!A%l��*.�{Z1�:]H�+�\�ߺ��� �qw�}�x����)Y�Ԕ��B Z�3C�x�Ձ�%�Ʋ��h�ã5w��n4�ulj�U¨�Y4FW=��K�aelڛ0�s��ۋ��N�+�3cv��^68�>Ϡ�ʎ6�:�oe$�� 8ι��R�5-�D!�k�p�^9��8Ю����;:�4J��C�Ȩ�u+'D�r���S�;E��@P��N�աP���Rدa�;��_�earL�.٢��h������`#X�Œ�PKq�F�g�#�f�q(Tf����@u�C�-�&3ab-��ap(�b�)X��i�9� ��#�r�s\��,��3����������R��zkMB*�6/i:ˤ]ꌟ�h/gkm��-�b����Im���e�~�����0d$�X��$��yXu� �O����0�QO��Ȓ099�H�w����}f���L���ܟ�Y�F:�ױ��{o���?���I��� E High strength, light weight; Waterproof bond = water resistance; High Face / Edge screw holding; Very low formaldehyde; meets CARB; Specifications: Thicknesses: 5/8″, 3/4″ 1″ & 1/8″ Panel Size: 4’x8′ & 10′ HDO is manufactured with more resin than MDO, but both are far more durable than standard plywood and are ideal for use in the most punishing of applications. Shipping Weight: 48.0 lbs. The resin-soaked fiber overlays are applied with heat and pressure, forming an extremely strong, extremely flat and extremely smooth engineered wood product that is waterproof. Sign In Failed. Yet they retain plywood's advantages, such as high strength to weight ratio, dimensional stability, and rack resistance, as well as plywood's design flexibility; panels are available in large sizes and can be worked with common woodworking tools. HDO High Density Overlay has a resin content of 52 to 58 percent and appears smoother to the touch than does MDO. %PDF-1.3
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Demanding applications such as concrete forming, exterior siding, and industrial containers require tough building materials. Phone: 601-264-2962 Fax: 601-296-4766 1 HDO 1 HDO moderate grain/patch transference 100/100 G2S 1 MDO 1 MDO 1 HDO 1 HDO 120/30 G1S 1 MDO - Medium gloss with 2 HDO 1 HDO minor grain/patch transference 120/120 G2S 1 MDO 1 MDO 2 HDO Good-1-Side (G1S) panels have a backer sheet to inhibit moisture penetration and to help maintain dimensional stability. The function of the overlay is to add stability, repel foreign HDO plywood is much like MDO plywood, except that the density of the fiber surface layer is much greater. 1/2-in Common Southern Yellow Pine Plywood Sheathing, Application as 4 x 8. Founded in 1909, and now in its second century of family ownership, Murphy Company is a leading producer of hardwood and softwood plywood, engineered wood/laminated veneer lumber, and softwood veneer in the Pacific Northwest. Page 4 of 7 V1.0 – 01/2008 Description Species Hardwood species Origin South Africa Thickness 2.7mm to 3.4mm Sizes 1220mm x 2440mm (4’ x 8’) Glue Type E0 (CARB P2) Quality & Grade IHPA Fumigation Phytosanitary Certification can be arranged Finish According to customer requirements Description Species Hardwood and Softwood: Meranti, Okoume, Birch, Pine are some of the main species Origin Asia, South America and … This greater strength means that HDO … Estimates based on vertical and structural use; longevity will be lower for horizontal and/or architectural applications. Spruce-Pine-Fir Plywood Sheathing 95402, 100-percent wood pressure-treatment and can be painted from The Home Depot Marine plywood is a type of hardwood plywood. Plywood Versus MDO. The thermoset resin, bonded under heat and pressure, forms a very tough surface that easily resists abrasion, moisture penetration, chemicals, and deterioration. ?K��Z��k.�����%��˗2���Z��>}%�v�H�+�3^.���C6��,Y�{���m�o����q#|���m�n �U).�(t�ʱF�����j��y ���0�����9ܸƄ�&�=1m�t�o�m��387Z@x�t�sQ�pZ�'�xc���Ԕ5��;Ƽ��`f�(n�Ư|%>T�Hz��ٚ��=|sU���׆���7��g��@"�|��� '&�5]Cmcne��4����'��h����K���� c�,�_�}���n�Rm��\n�,�+2{���[1���zgG�8��G�eiH��'��/�]����4�j�q`?���/ǵv6z���^vmś�(�i:�����)��cO)NMͰ�\ؓVax�%�P!n�
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F�)`������p�����~} All Rights Reserved. HDO plywood is bonded with 100 percent water-resistant glue and has inner ply construction of C- … January 1997 Plywood Design Specification APA The Engineered Wood Association PSE FR PRGM LBL CLEAR REG HYP x (i) (i) B P/R RTN R BST RND HYP - 1 SIN - 1 COS - 1 x 2 LN LOG % ON WELCOME TO MURPHY . All plywood is sold in individual sheets. The overlay weight is not less than 60 pounds per 1,000 square feet of panel surface. ��(|�^y8>�$���|Y�G~�T�a`>ڐ>� �8�{@O&YJݗ�I��ӝ�ÿ�[�q=Z����p�[ vى�V�A| ��6i�Eb��nd�>v�:�7Z$��ЮM,DԔ�����WEVD+�[u�5�=�[� Z���](E.]��7���=�!��_-ꈩRb Armor-Ply TM HDO: Dura-Pour ™ Overlay Form Plywood** Engineered systems: 25: 45 80: 185: Gang forms: 15: 22 45 85: Job built: 10: 14 25 35 . The top veneer layer on both sides is “A” grade, providing for an extremely smooth surface, without voids, to apply the fiber overlay. Both MDO and HDO are hardwood plywoods with a resin soaked fiber overlays between the veneer layers and on both surfaces. Industrial Plyron – Heavy Duty Work Surface. Features. Yet … Product Description: Classic™ a high-density overlaid plywood panel … Industrial grade HDO panels are commonly used for highway panels, industrial tanks, and other highly demanding applications. HDO is manufactured with more resin than MDO, but both are far more durable than standard plywood and are ideal for use in the most punishing of applications. Crown HDO Weights Crown HDO can be specified as either one or two sided panels with 100 or 120 weight pouring faces, and 30, 100 or 120 weight backs to … Buy HDO Plywood, Find Details include Size,Weight,Model and Width about HDO Plywood. 1978 Hood Boulevard Suite 100 Hattiesburg, MS 39401. HDO is available in two grades, Concrete Form and Industrial, and MDO is available in Concrete Form and General grades. Weight is based on an assumed panel density of 36 pcf. Item #471097. Basic HDO™ is a 100/30, high-density, buff overlaid plywood for semi- gloss ˜nishes on smooth or coated concrete. Overlaid plywood, which can be either high or medium density (HDO or MDO), is a kind that utilizes the same structure of regular sheets with veneers glued to one another. The overlay weight is not less than 60 pounds per 1,000 square feet of panel surface. True hardwood plywood is made with thin layers of 100 percent hardwood, which generally is stronger and harder and has a finer grain than softwood. However, overlaid sheets have an overlaid face that gives it a somewhat finished appearance. HDO Plywood. To learn more about HDO and MDO panels, download the HDO/MDO Product Guide, Form B360, which describes High Density Overlay (HDO) and Medium Density Overlay (MDO) plywood applications, properties and characteristics, plus shop practice and finishing recommendations. Our hardboard is ideal for industrial applications that require a hard durable surface over a structural plywood substrate. Plyron is a hardboard face laminated to a plywood substrate. © 2018 - 2020 APA – The Engineered Wood Association. x 4 ft. x 8 ft. Plywood weight charts help builders compare the weights of different grades of plywood, calculate shipping weights and specify costs in building estimates. Demanding applications such as concrete forming, exterior siding and industrial containers require tough building materials. The resin overlay resists abrasion, moisture penetration and deterioration from many common chemicals and solvents. These features place HDO and MDO among the most durable construction materials on the market today. You did not provide a valid email address. HDO Plywood is bonded with 100% waterproof glue with face veneers grade B or better with a semi-opaque thermosetting resin-impregnated surface. Get the Plyform 5/8 in. 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