MXPA98007386A - Composite roofing members who have improved dimensional stability and related methods - Google Patents

Abstract

A composite recovery board (10) comprises a foam core (11) selected from the group consisting of polyisocyanurate and polyurethane materials and mixtures thereof, a front (15) applied to a main surface (13) of the foam core and comprises a sheet selected from the group consisting of polymeric materials, reinforced polymeric materials, cellulosic materials, paper, aluminum foil and its trilaminates, wherein the reinforced polymeric material and the cellulosic material are reinforced with a material selected from the group consisting of glass strands, glass fibers and their mixtures and gypsum board (14) applied to the opposite main surface (12) of the foam core. A method for repositioning roofs comprising applying composite recovery boards of the present invention to a roof deck, and applying a weather protective coating on the recovery boards. A continuous method for producing composite recovery boards comprises feeding gypsum boards (14) into a laminating structure (21), depositing a foamable polymer liquid (36) on the gypsum board, feeding a front material (15) to the Laminar structure on the foamable polymer liquid, allow the polymer liquid to rise between the gypsum board and the front material that forms the polymer foam of a pre-determined thickness, cure the polymer foam under heat (44) to create the composite board, and cut the composite board into desired stretches

Description

COMPOSITE ROOFING MEMBERS WHO HAVE IMPROVED DIMENSIONAL STABILITY AND RELATED METHODS Cross Reference to Related Requests This application corresponds to a continuation-in-part of the US patent application. Serial No. 08 / 700,339, filed September 23, 1996. Technical Field This invention relates to a composite board suitable for use as an insulation or recovery board within a roof system.

Particularly, the present invention relates to a composite board having improved dimensional stability, especially when exposed to extreme environmental conditions, including high temperatures and humidity and soaking. BACKGROUND OF THE INVENTION The construction of roofs in a low inclination roof, generally consists of a roof platform, an insulating barrier on the platform, a weather resistant layer applied to the insulating layer and optionally a layer of heat resistant material. The roof platform generally includes materials such as wood, plaster, concrete, steel and the like. On the roof platform, insulating boards are typically applied to provide thermal insulation and a uniform surface to which a protective layer is applied to the weather. The most common insulating boards are made of polyisocyanate, and recovered boards are typically made of extruded wood or pplstyrene fibers. Polyisocyanurate can be coated with a protective face which can be already rigid or flexible and can be flame retardant or flame retardant. In a roof relocation operation, the roof deck can be referred to as the existing roof, including the existing insulation and weather resistant layer. The isolation or recovery boards have been used, as it is referred to in the relocation of the roof, where the existing roof has leaks. These boards generally apply to a roof platform built to provide a uniform surface when an existing roof is recovered. The most common recovery boards are made of wood fibers or extruded polyethylene. Wood fiber is typically coated with a thin layer of asphalt material on the one hand, but extruded polystyrene typically does not contain a front. To seal the roof of the elements, the insulation or recovery boards are typically covered with various materials including molten asphalt, modified bitumen membrane, rubberized asphalt, or an elastomeric composition, such as EPDM (ethylene monomer). propylene diene). Not all seal materials mentioned above are compatible with each type of insulation or recovery board. For example, molten asphalt can not be used with extruded polystyrene. Common combinations of seal materials and isolation or recovery board are known to those with skill in the industry. Finally, the layer of heat-resistant material, which is generally applied directly to the weather-resistant layer, may include gravel, river stone, foam or a layer of mastic covered by gravel and the like. The application of the protective layer outdoors can be achieved by a number of means, usually dictated by the type of material used. For example, sheets of a protective membrane can be rolled over the roof and joined together or together by application of a blowtorch or the use of an adhesive. Although economical and generally widely used, recovery or insulation boards containing wood and polystyrene fibers are often ineffective in hot, humid and soaked environments. In particular, wood fiber boards will disintegrate in a damp, soggy environment, which is common in a roof relocation operation. It will expand, buckle or distort polystyrene in similar environments, especially when exposed to heat, extreme experienced on roofs in hotter climates. The patent literature includes panels and boards used for roofing operations. Constructed roof structures and their components, for example, are well known in the art. With respect to insulating boards, the patent of the U.S.A. No. 5,001,005 illustrates a rigid foam board comprising a thermo-fixed plastic foam sandwiched between two fronts, * the front comprises glass fibers, non-glass filler and non-asphalt binder. Likewise, the US patent. No. 4,388,366 illustrates a laminated insulating board comprising a plastic foam core and at least one facing sheet which both form a protective layer and a ventilation medium for fluids; the front sheet comprises fine glass fibers bonded together with polyvinyl acetate. The patent of the US. No. 5,081,810, is directed to a construction panel comprising a core sandwiched between two outer surface layers. The core is formed from polystyrene or polyurethane and the outer surface layers may include plywood or other suitable material. Instead of plywood, the use of other materials such as gypsum has been recognized in the specialty.

The patent of the U.S.A. No. 3,512,819 is directed to modular construction wall panels comprising a foamed-in-place polyurethane sandwich between interior and exterior faces of building materials, including rigid board, plaster and plywood. The patent of the U.S.A. No. 3,842,559 is directed to a roof platform construction fabricated from gypsum reinforced with glass fibers. Specifically, the roof platform includes a laminate comprising (i) a gypsum board reinforced with glass fibers, (ii) foamed polyisocyanate and (iii) a weather resistant plastic layer. The patent of the U.S.A. No. 4,037,006 is addressed to composite insulating panel boards for use in building construction. The panel board comprises (i) a rigid gypsum board base panel, (ii) a self-adhering layer of foamed plastic, and (iii) fire retardant, vapor resistant edge sheets that cover the side edges of the foam layer of plastic. The patent of the U.S.A. No. 4,052,831 is directed to a construction panel structure that can be applied to a roofing system, comprising (i) a rigid board such as plaster and (ii) an insulating layer of foamed plastic.

The patent of the U.S.A. No. 4,449,333 is directed to a roof structure comprising from the bottom or from the base upwards (i) steel joints, (ii) metal platforms, (iii) a layer of fireproof material formed of cardboard- gypsum, (iv) a deposit board such as gypsum, (v) an insulating layer and (vi) a rubber lamination layer. The patent of the U.S.A. No. 5,220,762 is directed to water-resistant gypsum boards, with fibrous mat front. Particularly, one embodiment illustrates a roof platform system that includes: (i) a support means, (ii) a waterproof gypsum board, with fibrous mat front superposed to these means, and (iii) a exterior finish that superimposes the board. This embodiment may also include an insulating material, such as isocyanurate, sandwiched between the support means and the gypsum board. The fibrous mat comprises glass fibers and synthetic resin fibers. When a roof platform is contemplated, the finishing material includes asphalt and roofing felt preceded by the application of a fixed cementitious material on the gypsum board with fibrous mat front. In this way, there is still a need for a recovery board that can be exposed to humidity during installation and become di- erently stable. while wet and during the eventual evaporation of moisture. The use of a urethane foam and / or isocyanurate-containing compound between the gypsum board and a front comprising polymer, such as polypropylene, a polyamide, polymeric latexes and the like, reinforced with glass strands or glass fibers and optionally a filler material, such as calcium carbonate, clay, mica and the like, renders the compound of the present invention dimensionally stable and insensitive to relative humidity in ceiling relocation. SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a relatively inexpensive composite board for use particularly in roof recolosation, which is dimensionally stable in hot, wet and soaked conditions. Another object of the present invention is to provide a composite board having a front that can withstand application of the protective layer to the weather on the roof. Still another object of the present invention is to provide a composite board using a front selected from the group consisting of polymeric materials, cellulosic materials, paper, thin aluminum sheet and its trilaminates.

Another object of the present invention is to provide a board compound that uses a polyamide front. The present invention has as an additional objective to provide a composite board that uses gypsum board instead of particle board fibreboard. Still another object of the present invention is to provide a board that uses both a gypsum board and a polyamide front. A still further objective of the present invention is to provide a composite board that has sufficient integrity to patch or cover the roof. The present invention has as a further object to provide a composite board which provides a good base for subsequent application of the final layer or roof covering and which is compatible with the latter and the respective means of application. The present invention has as a further objective to provide a method for relocating roof using a composite board. Yet another object is to provide a method for manufacturing composite boards of the present invention. A further objective is to provide a method for repositioning a roof of a roof comprising apply composite boards of the present invention to a roof platform. At least one or more of the above objectives of the present invention together with their advantages over laminated materials and compounds that will be apparent from the specification that follows, are achieved by the invention as described and claimed below. In general, the present invention provides a composite recovery board comprising a foam core selected from the group consisting of polyisocyanate and polyurethane materials and mixtures thereof; a front applied to a main surface of the foam core and comprising a sheet selected from the group consisting of polymeric materials, reinforced polymer materials, cellulose materials, paper, aluminum foil and its trilaminates, wherein the reinforced polymer materials and the cellulosic materials are reinforced with a material selected from the group consisting of glass strands, glass fibers and their mixtures; and gypsum board applied to the opposite main surface of the foam core. The present invention also includes a method for recolosation of a roof, comprising applying composite recovery boards to a roof platform, the recovery boards comprising a core of foam selected from the group consisting of polyisocyanurate materials and polyurethane materials and their mixtures? and a front applied to a main surface of the foam core and comprising a laminated sheet of the group consisting of polymeric materials, reinforced polymeric materials, cellulosic materials, paper, aluminum foil and its trilaminates, wherein the polymeric materials reinforced and The cellulosic materials are reinforced with a material selected from the group consisting of glass strands, glass fibers and their mixtures? and gypsum board, applied to the opposite main surface of the foam core? and apply a protective layer to the weather in front of the recovery boards. Finally the invention provides a continuous method for producing a composite recovery board comprising the steps of feeding the gypsum board into a laminating structure? deposit a foamable polymer liquid on the gypsum board? feed a front material in the laminating structure on the foamable polymer liquid? allow the liquid polymer to rise between the gypsum board and the front material that forms the polymer foam of a pre-determined thickness? cure polymer foam under heat to create the composite board? and cut the composite board into desired stretches. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of a composite roof membrane according to the present invention? and Figure 2 is a schematic view of the apparatus used to fabricate roof members of the present invention. PREFERRED MODALITY FOR CARRYING OUT THE INVENTION The present invention is directed to a composite board or roofing member that is used to relocate an existing roof. The roofing member is applied to a roof platform that is substantially flat or of low inclination and that can be rebuilt, or that is exposed by the removal of old roofing or that is, an existing roof built in convenient conditions for recovery. Since the roof platforms are known and do not constitute part of the present invention, apart from as a base substrate in which the roof members are placed, no further details are necessary. Although roof members can be used as part of new roof installations, boards are designed specifically for roof relocation operations.

A problem in most but not all roof relocation facilities is a substrate or roof that is damp and often somewhat deteriorated. Typically, when the leak is noticed and safely when it is considered necessary to repair, the use of the laminated board of the present invention provides an economical and easy means of replacing tesho either the afflicted area or more somunmente the entire roof. In this way, the roofing member must have enough integrity to patch or cover the roof? Should he be able to seal the leak? it should provide a good basis for subsequent application of the final layer or cover, such as an EPDM tessh membrane, and should be compatible with the latter and the respective means of application. In other words, a board colosated on the old tesho so that a substrate for the new waterproof membrane will astutely remain wet. Existing boards made from wood fibers, extruded polyethylene will be distorted and / or damaged, requiring greater efforts to reposition the roof. Existing boards manufactured from isocyanurate foams will perform better except because the current state of the technique has been to use fronts that also deteriorate somewhat, which can lead to final failure of the board. Existing fronts are often They reinforce with organic felt materials, which provide an absorption action by capillarity through the front. While other problems can be minimized by drying the roof before the operation, or by waiting for it to dry, this is often not practical. Other front materials have used glass and reinforcing components of glass fibers bonded together with materials such as urea / formaldehyde resins? however, these "all glass" fronts, as they are sometimes referred to, are notorious for a condition known as "penetration through a face causing a stain on the opposite face" during the manufacturing process. When this happens, the foam can penetrate more easily through the front and bring up the rolling equipment, causing it to freeze, as well as creating other manufacturing problems. This weakness has been attributed to something to the use of polymer industries as bonding agents that are porous to allow the venting of gases and vapors. Polivinil asetato, for example, is often used as the binding agent to provide this porosity in fronts reinforced with glass. The composite board according to the present invention is better described with reference in Figure 1. This board is generally indicated by the number 10 and comprises a foam core 11 having first and second major surfaces, a lower face 12 and upper face 13, respectively. Coupling with the lower face 12 of the foam core is a gypsum board 14, while a sheet of facing material 15 is linked to the upper face 13. The composite boards 10 are generally approximately 2.54, 10.16 cm (approximately 1 to about 4") thickness, and can be manufactured in various dimensions depending on the intended application. Boards manufactured in sheets of 1.22 meters (4 feet) wide and 2.44 meters (8 feet) long, as is most suitable for compatibility In the construction industry, the foam core 11 may be polyisocyanurate, polyurethane or its mixtures.The foam core is generally of standard production and generally includes those having an approximate index of 250. Particularly, when polyisocyanurate foams are are used, those with an index above 200 are preferred, and when urethane is used, an index over 120 is preferred. In addition, mixed foams can be used, such We are a mixture of polyisocyanurate and urethane. Nominal density of polyisocyanurate foams is approximately 32.04 kg / m3 (2 pounds per cubic foot) (PCF)) and approximately 32.04 kg / m3 (2 pounds per cubic foot) (PCF)) for polyurethane foams.

The upper front 15 may comprise a polymer material, a reinforced polymer material or a reinforced cellulose material, as well as paper, thin aluminum sheet and its trilaminates. Particularly, the polymer material may include polypropylene, polymeric latexes, polyamides or mixtures thereof, and the cellulosic material may include a resilient point, sarton and the like. Examples of polymer / polypropylene latex mixtures include latexes selected from the group consisting of styrene-butadiene rubber (SBR = Styrene-Butadiene Rubber), polyvinyl chloride and polyvinyl alcohol. Front thicknesses are typically in the range between approximately .254 and 3.81 mm (.01 and .15") .An example of a suitable polyamide front material is a 6, 6 round poly, although other polyamides are equally suitable. of a polyamide front of the present invention is in the range from about 0.00635 to about 254 mm (about .25 to about 10 mils) preferably at about 0.01016 to 2032 mm (about .4 to about 8 mils) and more preferably from about .0127 to .1524 mm (.5 to about 6 mils).

The polymeric material also includes reinforcing materials such as glass strands, glass fibers or their mixtures. Amounts of these reinforcing materials are in the range from about 1 to 10,000 parts by weight, based on 100 parts by weight of the selected polymer to form the front. More preferably, the reinforcing materials are in the range of about 1 to about 500 parts by weight based on 100 parts by weight of the selected polymer to form the front. In addition, the reinforced polymer material may optionally include fillers such as clay, mica, talc, lime (calcium carbonate), gypsum (calcium sulfate) aluminum trihydrate, antimony oxide, selulose fibers, plastis polymer fibers and mixtures thereof . Amounts of these fillers are in the range from about 0 to about 5000 parts by weight based on 100 parts by weight of the polymer selected to form the front. Selenic material can be reinforced with glass fibers together they are carbon strand as a pigment and small amounts of binder additives can be formed into flat compounds, suitable for use as facing materials. Other fronts that include thin sheet aluminum and trilaminates thin sheet aluminum, kraft paper and thin aluminum sheet also can be used As an example of a convenient reinforced cellulosic compound, cellulose fibers (paper), 83% by weight can be combined with glass fibers, 14% by weight, carbon black (pigment) 1% by weight and binding agents (for example resin). wood turpentine, starch, alum and the like (2% by weight) The carbon and binding agents are minimal, while the glass can be increased to approximately 17% by weight, with an accompanying decrease in the amount of cellulose fibers. of this front is about .6096 mm (24 mils) and generally as the content of glass fibers increases, the front can be made thinner instead of a base of wood fibers or agglomerated board of particles, the present invention replaces a layer of gypsum board 14, which adheres to the lower face 12 of the foam core A convenient board for these purposes is described in U.S. Patent No. 5,220,762, the material of which is incorporated herein by reference. These gypsum boards are manufactured by Georgia Pacifis Corporation and sold under their registered DENS-DECK MARSA. Similar gypsum boards are also adesdated to practice the present invention. Entries include lower cost than wood products and higher resistance to moisture and humid environments, thus providing vastly improved dimensional stability. It has been found that the front of the present invention imparts weatherability and durability to composite boards used as roof substrates within a constructed ceiling. Particularly, it has been found that the fronts of the present invention provide dimensional stability to the boards, inhibiting the boards from being distorted by high heat and humidity. In addition to dimensional stability, the front protects the foam against moisture as well as against penetration. Because of these advantages, it has been found that the fronts of the present invention are particularly useful with recovery boards because the environment commonly encountered in a roof relocation operation is wet, hot and often soaked. Even more, the optional fillings add resistance to the front and provide the front with a rough appearance. An advantage of the present invention, for example, is that the lamination of a polyisosanurate foam on one side of a Dens-Desk type face improves the water absorption of the Dens-Deck material. According to a standard water absorption protocol (ASTM C-209), after two hours of immersion in water - Dens-Deck of .635 c (1/4") only absorbs 3.28% by volume of water and a Standard 5.08 cm (2") polyisocyanurate foam with 2 cellulose fibrous glass mat fronts absorbs .90% by volume of water For a 5.08 cm (2") composite board consisting of a 5.08 cm polyisocyanurate foam (2") and a Dens-Deck front of .635 cm (1/4"), however the water absorption was only .33% by volume of water. In addition, the addition of a polyamide 6,6 front opposite the Dens-Deck front further decreases the water absorption of the compound. Using a modified ASTM C-209 protocol, where water absorption is measured in percent by weight instead of volume percent and a polyisocyanurate foam rubber with a cellulosic fibrous glass mat front opposite a Dens- Deck that absorbs 50.8% by weight of water. In contrast, a polyamide 6, 6 front coupled with a Dens-Deck front absorbs only 0.9% by weight of water. Other advantages of boards having both a 6.6 polyamide front and a Dens-Desk front are high thermal stability, low foam density and high load sapacity. These boards are stable for several minutes at temperatures up to approximately 260 ° C (500 ° F) and also for the range of temperatures that can be expected for ceilings or walls that are under conditions of normal use. In addition, polyamide 6, 6 which is thermostable at 265.5 ° C (510 ° F) is inadesuada for the continuous lamination process of the present invention. Due to the better flow, lamination of foam to Dens-Deck results in a 2.5% reduction in foam density. In addition, a Dens-Desk type front is less susceptible to delamination under load. the bonding of the polyisosanurate foam to the Dens-Deck (1.6169 kg / cm2) 23 psi)) is approximately twice as much as the polyisocyanurate foam to a standard silicon fibrous glass mat front (.9139 kg / cm2) 13 psi) ). Consequently, loads of 2,812 kg / cm2 (40 psi) can be made on the board without affecting board performance. The composite boards 10 are typically applied to the tesco platform in parallel, salled, parallel applications which are mutually stencilled. The boards are generally fastened to the platform by slaves or adhesive, although other means for attaching the installation board to the roof platform are common in the art. Once the composite or recovery board of the present invention has been applied to a roof platform, the roof is completed by covering the substrate with a weather protection layer. The protective layer may include asphalt, bi urnen, biturnen modified with atactic polypropylene (APP), rubberized asphalt, EPDM teshado membranes and any other conventional protective layer known in the specialty. In ballasted roofs, this protective layer is then covered with gravel or river stone, where the weight of the river stone serves a second function that is to attach the protest layer to the tesho platform. While boards can be manufactured in a batch process, a continuous online process is preferred since this process is both efficient and economical. With reference to Figure 2, a continuous process is schematically illustrated in conjunction with the apparatus 20. The apparatus provides a rolling structure, generally 21 employing continuous bands or strands 24 and 25, passed by a series of rollers 26, several of the which are displaced. Front material 15 is transported by an upper spool 28 which is placed to feed into the laminating structure 21. The gypsum boards 14 are first fed into the lower band 25, which is longer than the upper band 24 in order to receive the boards 14. Immediately on a board 14 as the displacement structure 21 enters, there is a foam mixing head 30. The mixing head 30 is fed from the tanks 31 and 32 or any number that is required by the foam composition polymeric selected. When the desired foam is a polyurethane, for example the tank 31 can provide components isocyanate and reservoir 32 polyol components. The resin materials of these deposits are fed through metering pumps 33 and 34 and through appropriate conduits 65 to the mixing head 30, where upon contacting the reaction is initiated to form the polymer foam. The mixing head 30 then supplies an appropriate mixture 36 of resins from reservoirs 30 and 31 as well as an appropriate dosed amount on the surface of the moving board 14. Subsequently, and slightly downstream of the mixing head 30, the front 15 It is fed to the displacement structure 21, passing around a feed roller 38 which places the front 15 against the upper band 24. According to the board 14, the front 15 and the deposited foamable composition are transported, the latter is lifted and as it is illustrated at 40, until the front 15 is in full contact with the upper band 24. It will be appreciated that the bands 24 and 25 are adjustable to accommodate the desired thicknesses of the board 10. After the foaming has been completed, the intermediate product, indicated by the number 42 is heated to effect polymer curing. This is achieved by properly located heaters, generally 44 or by passing through an oven (not shown). After heating the appropriate time (residence) and temperature, the product emerges from the laminator and is cut into sections to produce the boards 10. This cut is within the skill of the art, including aerial cutting saws and the like, which provide the desired dimensions without interruption of the apparatus 20. While lengths may be varied at will in the apparatus, the widths of the boards 10 may subsequently be trimmed to size in a separate operation, as necessary. It is also possible to provide side walls (not shown) as a whole, they are the displacement shell 21 to define the desired lengths as the polymer foams into the laminator. In this way it should be apparent that the device and methods of the present invention are highly effective in providing useful composite boards for roof relocation. The invention is particularly suitable for roof relocation but is not necessarily limited thereto. The method of the present invention of manufacturing can be practiced in other equipment and the method for reclosing tesho can be practiced in a variety of boards within the scope of the present invention. Based on the above description, it will now be apparent that the use of composite boards described herein will lead to taste the previously established objectives. Therefore, it should be understood that any apparent variations fall within the scope of the claimed invention and thus, the selection of specific component elements can be determined without departing from the spirit of the invention described and presented herein. In particular, boards according to the present invention are not necessarily limited to those having a nickel of isosanurate or polyurethane foam. Even more, since it was previously unknown, the deposition of the polymer front can be varied, partly the use of the optional fillers. In this way, the scope of the invention will include all modifications and variations that may be within the scope of the appd claims.

Claims (20)

1. CLAIMS 1. - A composite resurfacing board characterized in that it comprises: a foam core selected from the group consisting of polyisocyanurate and polyurethane materials and their mixtures? a front applied to a main surface of the foam nuscle and which includes a selected sheet of the group consisting of polymeric materials, reinforced polymeric materials, cellulosic materials, paper, thin aluminum sheet and its trilaminates, wherein the latter polymeric materials and The cellulosic materials are reinforced with a material selected from the group consisting of glass strands, glass fibers and their mixtures? and gypsum board applied to the opposite main surface of the foam core.
2. 2. A board composed of asmmunity with claim 1, characterized in that the sheets optily contain a filling selected from the group consisting of arsilla, mass, talus, salt, gypsum, aluminum trihydrate, antimony oxide, fibers, fibers of plastic polymer, and mixtures thereof in an amount from 0 to about 5000 parts by weight, based on 100 parts by weight of the material selected to form the front. 3. - A composite board according to claim 1, characterized in that the foam core comprises polyisocyanurate having an index of 200. 4. A composite board according to claim 1, characterized in that the foam core comprises polyurethane having a index over 120. 5. A composite board according to claim 1, characterized in that the front has a thickness in the range from about .0127 to about 3.81 mm (.0005 to about .15"). 6.- A board Composite according to claim 1, characterized in that the front comprises the reinforcing material in an amount of about 1 about 10,000 parts by weight, based on 100 parts by weight of the material selected to form the material. Composed in accordance with Claim 1, characterized in that the polyethylene materials are selected from the group consisting of propylene, polyamide s, polymer latexes and their mixtures. 8. A composite board according to claim 7, characterized in that the sheet comprises a mixture of polymer / polypropylene latex, the latex is selected from the group consisting of styrene-butadiene rubber, polyvinyl chloride and polyvinyl alcohol. 9. - A method for relocation of ceilings, characterized in that it comprises: applying composite recovery boards to a roof platform, the recovery boards comprise: a foam core selessio group consisting of polyisocyanurate materials and polyurethane materials and their mixtures? and a front applied to a main surface of the foam core and comprising a sheet selected from the group consisting of polymeric materials, reinforced polymer materials, cellulose materials, paper, aluminum foil and its trilaminates, wherein the latter polymeric materials and the cellulosic materials are reinforced with a material selected from the group consisting of glass strands, glass fibers and their mixtures; gypsum board, applied to the opposite main surface of the foam core? and apply a protective layer to the weather on the recovery boards. 10.- Method for repositioning of tesho, of strength are claim 9, characterized in that the foam core comprises polyisocyanurate having an index of 200. 11.- Method for resolosación of ceiling, according to claim 9, characterized in that the foam core comprises polyurethane having an index on about 120. 12.- Method for repositioning the roof, of a soundness with claim 9, which is sarasterized because the front has a thickness in the range from about 0.0127 to 3.81 mm (approx. 0005 a .15") 13.- Method for ceiling relocation, according to claim 9, characterized in that the front part of the reinforcing material is submerged in a thickness of about 1 approximately 10,000 parts by weight, based on 100 parts by weight of the material selected to form the front. 14. Method for repositioning the roof of a roof, according to claim 9, characterized in that the sheets optionally contain a filling selected from the group consisting of clay, mica, talc, lime, gypsum, aluminum trihydrate, antimony oxide , cellulose fibers, plastics polymer fibers, and their ezslas, in a sanity from 0 to about 5000 parts by weight, based on 100 parts by weight of the material selected to form the front. 15.- Method for repositioning the roof, of sonformity with claim 9, characterized in that the polymer materials are chosen from the group consisting of of polypropylene, polyamides, polymeric latexes and their mixtures. 16. Method for repositioning the roof, according to claim 9, characterized in that the sheet contains a mixture of polymer / polypropylene latex, the latex is selected from the group consisting of rubber of styrene-butadiene, polyvinyl slurry and alcohol polyvinyl 17.- Continuous method to produce a sarasterized composite recovery board because it stages the steps of: feeding gypsum board to a laminating mantle; deposit a foamable polymer liquid on the gypsum board? feed a front material in the laminating structure on the foamable polymer liquid? allow the liquid polymer to rise between the gypsum board and the material facing what forms a polymer foam of a pre-determined thickness? Cure the polymer foam under heat to srear the composite board? and cut the composite board into desired stretches. 18. Method according to claim 17, characterized in that the front material comprises a laminated sheet of the group consisting of polymer materials, reinforced polymer materials, selulosic materials, paper, thin foil and aluminum. trilaminates, where the last polymeric materials and the selulósicos materials are reinforced with a material selected from the group that consists of glass strands, glass fibers and their mixtures. 19. Method according to claim 18, characterized in that the polymer materials are selected from the group consisting of polypropylene, polyamides, polymer latexes and their mixtures. 20. A method of repositioning the roof, according to claim 18, characterized in that the sheets are optionally filled with a group consisting of arsilla, mica, talc, lime, gypsum, aluminum trihydrate, antimony oxide, fibers of selulosa, plastis polymer fibers and mixtures thereof, in an amount from 0 to about 5000 parts by weight, based on 100 parts by weight of the material selected to form the front. SUMMARY OF THE INVENTION A somatized recovery board (10) comprises a foam null (11) from the group consisting of polyisocyanurate and polyurethane materials and their mixtures? a front (15) applied to a main surface (13) of the foam core and comprising a sheet selected from the group consisting of polymeric materials, reinforced polymeric materials, cellulosic materials, paper, thin aluminum sheet and its trilaminates, wherein the reinforced polyester material and the cellulosic material are reinforced with a material selected from the group consisting of glass strands, glass fibers and their mixtures and gypsum board (14) applied to the opposite main surface (12) of the foam core. A method for repositioning ceilings comprising stacking resuperassion boards from the present invention to a tesho platform? and apply a protective layer to the weather on the recovery boards. A continuous method for producing composite recovery boards comprises feeding gypsum boards (14) in a laminating structure (21)? deposit a foamable polymer liquid (36) on the gypsum board? feed a front material (15) to the laminating structure on the foamable polymer liquid? allow the polymer liquid to rise between the board of gypsum and the front material that forms the polymer foam of a pre-determined thickness? Cure the polymer foam under salor (44) to srear the composite board? and cut the composite board into desired stretches. RS / frp / 30/9703014