CA2233511C - Wood rot preventing wood casing end grain moisture barrier assembly and method - Google Patents
Wood rot preventing wood casing end grain moisture barrier assembly and method Download PDFInfo
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- CA2233511C CA2233511C CA 2233511 CA2233511A CA2233511C CA 2233511 C CA2233511 C CA 2233511C CA 2233511 CA2233511 CA 2233511 CA 2233511 A CA2233511 A CA 2233511A CA 2233511 C CA2233511 C CA 2233511C
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- moisture
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B1/00—Border constructions of openings in walls, floors, or ceilings; Frames to be rigidly mounted in such openings
- E06B1/56—Fastening frames to the border of openings or to similar contiguous frames
- E06B1/60—Fastening frames to the border of openings or to similar contiguous frames by mechanical means, e.g. anchoring means
- E06B1/6092—Fastening door frames to the floor or ceiling; Jamb feet; Cross members uniting the jamb feet
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- Door And Window Frames Mounted To Openings (AREA)
Abstract
A moisture barrier assembly for the end grain at the lower end of a wood casing such as door jambs, molding for exterior building sidings and window frames is disclosed. The barrier includes a moisture impervious plate such as plastic attached to and covering the entire lower surface of the casing. As an additional protectivemeasure, a layer of a wood end grain sealant such as paraffin or other olefin wax is applied to the lower surface of the casing prior to attachment of the plate to the casing.
The plate may also include one or more grooves or flutes across an upper surfaceportion thereof to permit air circulation between the plate and casing for drying the casing end grain in the event moisture seeps into the end grain through cracks or disruptions in the sealant layer from around the upper edges of the plate.
The plate may also include one or more grooves or flutes across an upper surfaceportion thereof to permit air circulation between the plate and casing for drying the casing end grain in the event moisture seeps into the end grain through cracks or disruptions in the sealant layer from around the upper edges of the plate.
Description
BACKGROUND OF THE INVENTION
This invention relates broadly to an ~ccpmhly for providing a moisture barrier on a lower surface of a wood casing, of the type used for window frames, door jambs, mol~lings for P~rtPrn~l building siding such as brick, stone, block, wood or vinyl, and other types of casings in order to prevent wood rot.
Such casings have bases which are often subjected to moisture or st~n.ling liquid such as rain water at various times throughout their use service lives. As a result, rotting of such casings at their bases is an ongoing problem. The problem is Pnh~nred by the fact that the end grain of such a wood casing on its P~ose-l lower surface has an affinity for absorbing moisture from the surface on which it is supported. The usual h~n~lling of these casings during LldnspolL~tion from mill to dealer, from dealer to job site and, thereafter, from h~n~lling at the job site can cause scr~trhing, scoring, gouging or other disruptions of the end grain which will enh~nre moisture absorption into the end grain of wood.
Previous efforts to prevent wood rot of wood casings have not been a success.
Attempts have inrlllded copper plating of f~ctPn~r members, wrapping of prese~livt:
packages, surrounding the wood with moisture impervious m~t~ri~lc~ and the like.These prior ~ have not recognized that the source of wood rot is to a large extent based upon water absorption through the exposed end grain. Thus, because this point was noe appreciated, prior efforts have been flawed from a design point, and have increased the problem. Exposed major surfaces do not usually contribute to wood rot, because there is little moisture to penPhr~h~ The moishure content must approach 25% for wood rot to be inih~te~l, and that content cannot norm~lly be CA 02233~11 1998-03-30 approached unless an end grain surface is available. The end grain surface allows moisture to wick into the wood, with the result that the high moisture content may be achieved, particularly if left in stAn.ling water.
Placing the end grain surface on concrete, such as frequently occurs with slab construction, u~ill not solve the problem. Concrete is a relatively porous mAt~riAl, so moisture may actually rnigrate through the concrete to the end grain surface. Thus a dam, plastic barrier, or the like applied to the major s~ Ps will not solve the problem, where the end grain surface rests upon concrete.
By means of my invention, this and other difficulties encoul~ ed using wood casings of the prior art are suh;,~ lly reduced, if not altogether ~limin~t~i SUMMARY OF THF INVENTION
It is an object of my invention to provide a moisture barrier ~cc~mhly for a lower surface of a wood casing in order to prevent rot.
It is a further object of my invention to provide a moisture barrier ~cs~mhly for a lower surface of a wood door jamb.
It is another object of my invention to provide a moisture barrier for a lower surface of a wood mol-ling for use with P~rt~m~l siding such as brick, block, stone, wood or vinyl siding.
It is yet another object of my invention to provide a moisture barrier acs~mhly for a lower surface of a window frame.
Briefly, in accordance with the objects of my invention, I provide, in comhin~tion with a wooden casing of the type used for exterior door jambs, window frames and molding for brick, block, stone, wood and vinyl siding and the like, an end grain moisture barrier ~csemhly co,..~ ;..g a plate att~rhP~l to and covering an Pxp~se~l end grain surface of said casing.
These and other objects, features and advantages of the present invention will become apparent to those skilled in the art from the following dPtailPd description and att~rhP-I drawings on which, by way of PY~mrlP, only the ~l~elled embo~limPntc Of my invention are illustrated.
BREF DESCRIPIION OF THE DRAWINGS
FIG. 1 shows a perspective view of a lower end portion of a wooden exterior door jamb and a side portion of an att~rhPd door sill, the door jamb employing an end grain moisture barrier ~csPmhly illusLId~ g a plef~l.ed embodiment of my invention.
FIG. 2 shows a cross-sectio~l elevation view of the jamb, sill and acc~mhly of FIG. 1 as viewed along cross-section lines 2--2 of the latter m~ntion~d figure.
FIG. 3 shows a perspective view of a lower end portion of the jamb, sill and ~csPmhly of FIGS. 1--2 with a wooden brick molrling added, the brick mol~ling also employing an end grain moisture barrier ~cs.omhly, thus ilhlctrating another important embo~lim~nt of my invention.
FIG. 4 shows an e_ploded perspective view of a lower end portion of a generalized wooden outer casing for a door jamb, molding for e_terior siding, or a window frame employing the moisture barrier assembly of my invention.
FIG. 5 shows a front elevation view and an oblique projection of an out-cide Pntranre door to a r~d~lpnre or other building illustrating various uses for the moisture barrier ~Cc~omhly of the present invention.
D~ION OF THE PREFERRED EMBODIMENT
Referring now to FIGS. 1--2 there is shown, in a p~f~.ed Pmhotlim~Pnt of my invention, a wooden exterior door jamb 10, a collv.~.l;onAl door sill Acs-Pmhly 12 which is Atta~hP~ to the side of the door jamb in the usual, well known manner, and a novel moisture barrier Acs~Pmhly 14 for the otheIwise col~v.. lion~l door jamb. The sill AccPmhly 12 inrln~lPs the usual wooden threshold 16 and metal weather cover 18 covering an exterior side wooden base 19. A lower end portion of the door jamb 10 is attArh.o~ to the base 19 of the sill Ac5rmhly 12 by means of wood screws 20.
Now, in accordculce with my invention, the moisture barrier ACs~mhly 14 in~ s a moisture impervious plate 22 which is att~rhPd to and covers the entire surface area at the lower end grain exposed surface of the jamb 10. By end grainexposed surface, I mean a surface cut Ll~u~v~l~e to the lon~itu.linAl oriPnt~tll)n of the grain. In other words, a surface exposing the growth rings of the wood. The plate 22 should be of water re~L~lt construction and should preferably have a shape whichcol,l~l.lls to the base of the jamb 10, so as not to project beyond the edges thereof. I
prefer to construct the plate 22 of a snit~hl~P plastic such as, for eY~mple, a high density polyethylene or polyvinyl rhlt)Ti~le. While the plate 22 can be attArhP-l to the bottom of the jamb 10 in any suitable manner, I prefer to use convrntionAl gun driven steel pins 23 having 1/16 inch ~liAmPtPTS which are aligned in a single row and which are spaced about one inch apart. It is only important that the pins 23 or other fActPning means used do not split the wood at the base of the jamb 10, and are sllfflriPnt to hold the plate 22 securely in place until the jamb, with plate ~tt~rh-P.l, is permAnPntly set in operative position during doorway constluction. While the thirk~Pcs of the plate 22 is CA 02233~11 1998-03-30 not especially critical, I have found that a plate thi~kn.ocs of 3/16 inch is s~hcfartoTy.
For a plate of this thirkn~cs, I prefer to secure it to the jamb using the previously m~onh~nr(l pins 23 which have 3/4 inch l~ngth~
While the plate 22 can be directly applied to the lower end of the jamb 10 as previously .aYpl~in~d in order to provide an improved moisture barrier for the lower end of the jamb, I envision the possibility that, over an eYt.on~led period of time moisture might still seep into the lower end grain of the jamb 10 around the upper edges of the plate 22. To provide atl(lihon~l protection and to guard against such a possihility, I prefer to take the further step of applying a coating or layer 24 of a suitable wood end grain sealant to the entire lower end of the jamb 10 prior to ~tt~rhing the plate 22 to the jamb. While a conv~nhon~l water seal of the type used on out ide wood decks and the like might be suitable, I prefer to use an olefin wax such as paraffin. Another sealant which shows promise is a miYture of pa~ wax and petroleum jelly suitable to form a thick grease.
In using paraffin wax as the sealant, I use a double boiler arrangement c....l~;..;..g water in a first trough which can be heated to an elevated temperature. A
second hrough is suspended in the first trough such that the water in the first hrough is against the base of the second trough. Paraffin is then placed in the second trough and the water in the first trough is heated until the waY in the second trough is melted and reaches a temperahlre of about 175~ F., at which point the lower end of the jamb 10 or other type of wooden casing, as the case may be, is touched to the surface of the melted waY pool in the second trough. The lower end of the jamb 10 or casing is held in contact with the surface of the melted wax pool whereupon moisture residing in the end grain of the wood escapes and bubbles out of the waY pool around the edges of the wood. This bubbling process will norm~lly run its full course in about one minute from the time the end grain of the casing first touches the surface of the pooL After the bubbling stops, the casing is withdrawn from the second trough, whereupon the wax rapidly cools and soli.~ifiP~ on the lower end of the casing. The plate 22 may then be applied to the jamb 10 over the wax layer 24 as previously PYrl~inP~l In the event the sealant of the layer 24 cont~in~ voids, cracks or other disruptions through which moisture might enter the lower end grain of the jamb 10 from around the upper edges of the plate 22, I further provide means for circnl~1~ng ~mhi~n~ air through the plate 22 so as to contact the exposed lower surface of the casing to aid in car~ying off moisture to dry the same. To this end, I grind at least one flute or groove 26 across an upper surface portion of the plate 22. In the present PY~mrkP~ I provide a pair of spaced apart, parallel ~Pn~ling grooves 26 which run from an outside edge to an inside edge of the plate 22. For a 3/16 inch thick plate, I
prefer to grind the grooves 26 to a depth of 1/16 inch.
Referring now to FIG. 3 there is shown a casing comprising an exterior wood mr~lfling 30 for siding such as brick, block, stone, wood, vinyl or the like. In this eY~mrlP, the mol-ling 30 is applied to an exterior face of the door jamb 10 along an exterior side of the door sill 12, the jamb 10 and sill 12 being the same as shown in FIGS. 1--2. A lower surface of the molding 30 contains a moisture barrier assembly 32 which inrludPs a covering plate 34 and a wood end grain sealant layer 36 formed and applied as in the previous eY~mrlP with reference to FIGS. 1--2. The plate 34 of the present PY~mrlP inrlu~Ps a series of spaced apart, parallel PxtPn~ing~ upwardly opening, air circulation grooves 38 formed in an upper surface portion thereof for circulating air to dry the end grain of the m~lding 30 in the event moisture seeps therein from around the upper edges of the plate and through any disruptions in the layer 36 that may eYist.
Referring now to FIG. 4 there is shown in still another important PmhodimPnt of my invention, a lower end portion of a generalized wood casing 39 which may be of any well known type such as a door jamb, a m~lding for siding, a window frame on a casing for any other purpose. As in the previous PY~mplPc, a moisture barrier isapplied to completely cover a lower surface of the casing 39 which inrll1(1es a layer 40 of wood end grain sealant, such as p~raff~n, and a moisture resistant plate 42 cQJ.~ ;.. g a pair of spaced apart, parallel P~tPn~ling, upwardly opening, air circnl~h-~n grooves 44. If the layer 40 is ~a~ it may be applied to the lower end of the casing 39 as previously P~pl~inPd, after which the plate 42 may be secured to cover the layer 40 and the lower end grain of the casing 39 with pins 46 or other suitable fasteners, also as previously P~rpl~inPd Referring now to FIG. 5, an example of various uses for the moishlre barrier of my invention is shown in a fancy e_terior door ~semhly 46 for a brick sided rPcidPnre 48. ~nrlllded in the ~sPmhly 46 is a door 50 and a pair of side windows 52. A pair of wood casings 54 are provided, each of which doubles as a m~ lding for the brick siding 48 and as a side frame for the windows ~. A pair of moldings 56 cover a frame for the door 50, a door jamb of the frame being located directly behind the molding 56 located on the left side of the door 50 as viewed. At the base 58 of each of thecasings, inrlllding the jamb behind the left side door and window frame molding 56, a moisture barrier ~cspmhly as shown and e~pl~inPd in the previous eY~mplPc may beemployed to protect the bases of these casings from rotting.
Although the present invention has been described with respect to specific details of certain ~ ft:~led embo~imPntc thereof, it is not intPn~lPrl that such details limit the scope of this patent other than as spe. ifi~lly set forth in the following claims.
This invention relates broadly to an ~ccpmhly for providing a moisture barrier on a lower surface of a wood casing, of the type used for window frames, door jambs, mol~lings for P~rtPrn~l building siding such as brick, stone, block, wood or vinyl, and other types of casings in order to prevent wood rot.
Such casings have bases which are often subjected to moisture or st~n.ling liquid such as rain water at various times throughout their use service lives. As a result, rotting of such casings at their bases is an ongoing problem. The problem is Pnh~nred by the fact that the end grain of such a wood casing on its P~ose-l lower surface has an affinity for absorbing moisture from the surface on which it is supported. The usual h~n~lling of these casings during LldnspolL~tion from mill to dealer, from dealer to job site and, thereafter, from h~n~lling at the job site can cause scr~trhing, scoring, gouging or other disruptions of the end grain which will enh~nre moisture absorption into the end grain of wood.
Previous efforts to prevent wood rot of wood casings have not been a success.
Attempts have inrlllded copper plating of f~ctPn~r members, wrapping of prese~livt:
packages, surrounding the wood with moisture impervious m~t~ri~lc~ and the like.These prior ~ have not recognized that the source of wood rot is to a large extent based upon water absorption through the exposed end grain. Thus, because this point was noe appreciated, prior efforts have been flawed from a design point, and have increased the problem. Exposed major surfaces do not usually contribute to wood rot, because there is little moisture to penPhr~h~ The moishure content must approach 25% for wood rot to be inih~te~l, and that content cannot norm~lly be CA 02233~11 1998-03-30 approached unless an end grain surface is available. The end grain surface allows moisture to wick into the wood, with the result that the high moisture content may be achieved, particularly if left in stAn.ling water.
Placing the end grain surface on concrete, such as frequently occurs with slab construction, u~ill not solve the problem. Concrete is a relatively porous mAt~riAl, so moisture may actually rnigrate through the concrete to the end grain surface. Thus a dam, plastic barrier, or the like applied to the major s~ Ps will not solve the problem, where the end grain surface rests upon concrete.
By means of my invention, this and other difficulties encoul~ ed using wood casings of the prior art are suh;,~ lly reduced, if not altogether ~limin~t~i SUMMARY OF THF INVENTION
It is an object of my invention to provide a moisture barrier ~cc~mhly for a lower surface of a wood casing in order to prevent rot.
It is a further object of my invention to provide a moisture barrier ~cs~mhly for a lower surface of a wood door jamb.
It is another object of my invention to provide a moisture barrier for a lower surface of a wood mol-ling for use with P~rt~m~l siding such as brick, block, stone, wood or vinyl siding.
It is yet another object of my invention to provide a moisture barrier acs~mhly for a lower surface of a window frame.
Briefly, in accordance with the objects of my invention, I provide, in comhin~tion with a wooden casing of the type used for exterior door jambs, window frames and molding for brick, block, stone, wood and vinyl siding and the like, an end grain moisture barrier ~csemhly co,..~ ;..g a plate att~rhP~l to and covering an Pxp~se~l end grain surface of said casing.
These and other objects, features and advantages of the present invention will become apparent to those skilled in the art from the following dPtailPd description and att~rhP-I drawings on which, by way of PY~mrlP, only the ~l~elled embo~limPntc Of my invention are illustrated.
BREF DESCRIPIION OF THE DRAWINGS
FIG. 1 shows a perspective view of a lower end portion of a wooden exterior door jamb and a side portion of an att~rhPd door sill, the door jamb employing an end grain moisture barrier ~csPmhly illusLId~ g a plef~l.ed embodiment of my invention.
FIG. 2 shows a cross-sectio~l elevation view of the jamb, sill and acc~mhly of FIG. 1 as viewed along cross-section lines 2--2 of the latter m~ntion~d figure.
FIG. 3 shows a perspective view of a lower end portion of the jamb, sill and ~csPmhly of FIGS. 1--2 with a wooden brick molrling added, the brick mol~ling also employing an end grain moisture barrier ~cs.omhly, thus ilhlctrating another important embo~lim~nt of my invention.
FIG. 4 shows an e_ploded perspective view of a lower end portion of a generalized wooden outer casing for a door jamb, molding for e_terior siding, or a window frame employing the moisture barrier assembly of my invention.
FIG. 5 shows a front elevation view and an oblique projection of an out-cide Pntranre door to a r~d~lpnre or other building illustrating various uses for the moisture barrier ~Cc~omhly of the present invention.
D~ION OF THE PREFERRED EMBODIMENT
Referring now to FIGS. 1--2 there is shown, in a p~f~.ed Pmhotlim~Pnt of my invention, a wooden exterior door jamb 10, a collv.~.l;onAl door sill Acs-Pmhly 12 which is Atta~hP~ to the side of the door jamb in the usual, well known manner, and a novel moisture barrier Acs~Pmhly 14 for the otheIwise col~v.. lion~l door jamb. The sill AccPmhly 12 inrln~lPs the usual wooden threshold 16 and metal weather cover 18 covering an exterior side wooden base 19. A lower end portion of the door jamb 10 is attArh.o~ to the base 19 of the sill Ac5rmhly 12 by means of wood screws 20.
Now, in accordculce with my invention, the moisture barrier ACs~mhly 14 in~ s a moisture impervious plate 22 which is att~rhPd to and covers the entire surface area at the lower end grain exposed surface of the jamb 10. By end grainexposed surface, I mean a surface cut Ll~u~v~l~e to the lon~itu.linAl oriPnt~tll)n of the grain. In other words, a surface exposing the growth rings of the wood. The plate 22 should be of water re~L~lt construction and should preferably have a shape whichcol,l~l.lls to the base of the jamb 10, so as not to project beyond the edges thereof. I
prefer to construct the plate 22 of a snit~hl~P plastic such as, for eY~mple, a high density polyethylene or polyvinyl rhlt)Ti~le. While the plate 22 can be attArhP-l to the bottom of the jamb 10 in any suitable manner, I prefer to use convrntionAl gun driven steel pins 23 having 1/16 inch ~liAmPtPTS which are aligned in a single row and which are spaced about one inch apart. It is only important that the pins 23 or other fActPning means used do not split the wood at the base of the jamb 10, and are sllfflriPnt to hold the plate 22 securely in place until the jamb, with plate ~tt~rh-P.l, is permAnPntly set in operative position during doorway constluction. While the thirk~Pcs of the plate 22 is CA 02233~11 1998-03-30 not especially critical, I have found that a plate thi~kn.ocs of 3/16 inch is s~hcfartoTy.
For a plate of this thirkn~cs, I prefer to secure it to the jamb using the previously m~onh~nr(l pins 23 which have 3/4 inch l~ngth~
While the plate 22 can be directly applied to the lower end of the jamb 10 as previously .aYpl~in~d in order to provide an improved moisture barrier for the lower end of the jamb, I envision the possibility that, over an eYt.on~led period of time moisture might still seep into the lower end grain of the jamb 10 around the upper edges of the plate 22. To provide atl(lihon~l protection and to guard against such a possihility, I prefer to take the further step of applying a coating or layer 24 of a suitable wood end grain sealant to the entire lower end of the jamb 10 prior to ~tt~rhing the plate 22 to the jamb. While a conv~nhon~l water seal of the type used on out ide wood decks and the like might be suitable, I prefer to use an olefin wax such as paraffin. Another sealant which shows promise is a miYture of pa~ wax and petroleum jelly suitable to form a thick grease.
In using paraffin wax as the sealant, I use a double boiler arrangement c....l~;..;..g water in a first trough which can be heated to an elevated temperature. A
second hrough is suspended in the first trough such that the water in the first hrough is against the base of the second trough. Paraffin is then placed in the second trough and the water in the first trough is heated until the waY in the second trough is melted and reaches a temperahlre of about 175~ F., at which point the lower end of the jamb 10 or other type of wooden casing, as the case may be, is touched to the surface of the melted waY pool in the second trough. The lower end of the jamb 10 or casing is held in contact with the surface of the melted wax pool whereupon moisture residing in the end grain of the wood escapes and bubbles out of the waY pool around the edges of the wood. This bubbling process will norm~lly run its full course in about one minute from the time the end grain of the casing first touches the surface of the pooL After the bubbling stops, the casing is withdrawn from the second trough, whereupon the wax rapidly cools and soli.~ifiP~ on the lower end of the casing. The plate 22 may then be applied to the jamb 10 over the wax layer 24 as previously PYrl~inP~l In the event the sealant of the layer 24 cont~in~ voids, cracks or other disruptions through which moisture might enter the lower end grain of the jamb 10 from around the upper edges of the plate 22, I further provide means for circnl~1~ng ~mhi~n~ air through the plate 22 so as to contact the exposed lower surface of the casing to aid in car~ying off moisture to dry the same. To this end, I grind at least one flute or groove 26 across an upper surface portion of the plate 22. In the present PY~mrkP~ I provide a pair of spaced apart, parallel ~Pn~ling grooves 26 which run from an outside edge to an inside edge of the plate 22. For a 3/16 inch thick plate, I
prefer to grind the grooves 26 to a depth of 1/16 inch.
Referring now to FIG. 3 there is shown a casing comprising an exterior wood mr~lfling 30 for siding such as brick, block, stone, wood, vinyl or the like. In this eY~mrlP, the mol-ling 30 is applied to an exterior face of the door jamb 10 along an exterior side of the door sill 12, the jamb 10 and sill 12 being the same as shown in FIGS. 1--2. A lower surface of the molding 30 contains a moisture barrier assembly 32 which inrludPs a covering plate 34 and a wood end grain sealant layer 36 formed and applied as in the previous eY~mrlP with reference to FIGS. 1--2. The plate 34 of the present PY~mrlP inrlu~Ps a series of spaced apart, parallel PxtPn~ing~ upwardly opening, air circulation grooves 38 formed in an upper surface portion thereof for circulating air to dry the end grain of the m~lding 30 in the event moisture seeps therein from around the upper edges of the plate and through any disruptions in the layer 36 that may eYist.
Referring now to FIG. 4 there is shown in still another important PmhodimPnt of my invention, a lower end portion of a generalized wood casing 39 which may be of any well known type such as a door jamb, a m~lding for siding, a window frame on a casing for any other purpose. As in the previous PY~mplPc, a moisture barrier isapplied to completely cover a lower surface of the casing 39 which inrll1(1es a layer 40 of wood end grain sealant, such as p~raff~n, and a moisture resistant plate 42 cQJ.~ ;.. g a pair of spaced apart, parallel P~tPn~ling, upwardly opening, air circnl~h-~n grooves 44. If the layer 40 is ~a~ it may be applied to the lower end of the casing 39 as previously P~pl~inPd, after which the plate 42 may be secured to cover the layer 40 and the lower end grain of the casing 39 with pins 46 or other suitable fasteners, also as previously P~rpl~inPd Referring now to FIG. 5, an example of various uses for the moishlre barrier of my invention is shown in a fancy e_terior door ~semhly 46 for a brick sided rPcidPnre 48. ~nrlllded in the ~sPmhly 46 is a door 50 and a pair of side windows 52. A pair of wood casings 54 are provided, each of which doubles as a m~ lding for the brick siding 48 and as a side frame for the windows ~. A pair of moldings 56 cover a frame for the door 50, a door jamb of the frame being located directly behind the molding 56 located on the left side of the door 50 as viewed. At the base 58 of each of thecasings, inrlllding the jamb behind the left side door and window frame molding 56, a moisture barrier ~cspmhly as shown and e~pl~inPd in the previous eY~mplPc may beemployed to protect the bases of these casings from rotting.
Although the present invention has been described with respect to specific details of certain ~ ft:~led embo~imPntc thereof, it is not intPn~lPrl that such details limit the scope of this patent other than as spe. ifi~lly set forth in the following claims.
Claims (30)
1. In combination with a wooden casing of the type used for exterior door jambs, window frame and molding for brick, block, stone, wood and vinyl siding an end grain moisture barrier assembly comprising a moisture impervious plate attached to and covering a lower end grain surface of said casing, said plate having a length dimension and a thickness dimension and the length dimension exceeding the thickness dimension and the plate being attached to said lower end grain surface along said length dimension.
2. The assembly of claim 1 further comprising a moisture barrier layer of wood end grain sealant applied to an end surface of said casing prior to attachment of said plate to said casing.
3. The assembly of claim 1 wherein an upper surface portion of said plate includes at least one groove which extends across the upper surface of said plate and which opens toward a lower surface of said casing for providing an air circulation path to dry said lower surface of said casing in the event moisture finds its way into end surface between said casing and said plate.
4. The assembly of claim 1 wherein said casing comprises a door jamb.
5. The assembly of claim 1 wherein said casing comprises a molding for siding.
6. The assembly of claim 1 wherein said casing comprises a window frame.
7. The assembly of claim 1 wherein said plate is constructed of plastic.
8. The assembly of claim 1 wherein said plate is attached to said casing by metal pins.
9. The assembly of claim 1 wherein the area of said plate conforms to the shape of the lower end of said casing.
10. The assembly of claim 2 wherein said sealant comprises paraffin wax.
11. The assembly of claim 3 wherein said plate defines two spaced apart, parallel extending ones of said groove.
12. The assembly of claim 3 further comprising a layer of wood grain sealant applied to the end surface of said casing prior to attachment of said plate to said casing, said at least one groove also opening against said layer for providing an air circulation path to dry the lower end grain of said casing in the event said layer is disrupted and in the event moisture finds its way into said end grain between said casing and said plate through said disrupted layer.
13. In combination with a wooden door jamb, an end grain moisture barrier assembly comprising a relatively flat plate attached to and covering an end surface of said jamb, said plate defining at least one groove in an upper surface portion thereof which extends across said plate for providing an air circulation path to dry the end grain of said surface of said jamb in the event moisture finds its way into said end grain between said jamb and plate.
14. The assembly of claim 13 further comprising a moisture resistant layer of wood end grain sealant applied to the end surface of said jamb prior to attachment of said plate to said casing.
15. The assembly of claim 13 wherein said plate is constructed of plastic.
16. In combination with a wooden molding for siding, an end grain moisture barrier assembly comprising a relatively flat plate attached to and covering an end surface of said jamb, said plate defining at least one groove in a surface portion thereof which extends across said plate for providing an air circulation path to dry end grain of said end surface of said molding in the event moisture finds its way into said end grain between said molding and said plate.
17. The assembly of claim 16 further comprising a moisture resistant layer of wood end grain sealant applied to an end surface of said molding prior of said plate to said molding.
18. The assembly of claim 16 wherein said plate is constructed of plastic.
19. In combination with a wooden window frame, an end moisture barrier assembly comprising a relatively flat plate attached to and covering an end surface of said frame.
20. The assembly of claim 19 further comprising a moisture resistant layer of wood end grain sealant applied to an end surface of said frame prior to attachment of said plate to said molding.
21. The assembly of claim 19 wherein said plate is constructed of plastic.
22. A method for applying a moisture barrier to an end surface of a wood casing, the steps of which comprise:
providing a wood casing having an exposed end grain on an end surface thereof, forming a plate of moisture resistant material to cover said end surface, the plate having a length dimension and thickness dimension and the length dimension exceeding the thickness dimension, and attaching said plate along the length dimension to said end surface.
providing a wood casing having an exposed end grain on an end surface thereof, forming a plate of moisture resistant material to cover said end surface, the plate having a length dimension and thickness dimension and the length dimension exceeding the thickness dimension, and attaching said plate along the length dimension to said end surface.
23. The method of claim 22, the steps of which further comprise coating an end surface with a layer of melted wax prior to the steps of attaching said plate, and, thereafter, allowing said melted wax to cool and solidify prior to the step of attaching said plate
24. The method of claim 22, the steps of which further comprise forming at least one groove across surface of said plate prior to the step of attaching said plate such that said groove opens toward said end surface.
25. The method of claim 23 wherein said melted wax comprises paraffin.
26. The method of claim 25, the steps of which further comprise having a quantity of paraffin wax to obtain a quantity of said method wax and raise its temperature to about 175°F prior to the steps of coating said end surface.
27. The method of claim 26, including the step of contacting the melted wax with an end of the casing, and maintaining until moisture bubbling from the end ceases.
28. A method of preventing wood rot, comprising the steps of:
a) providing a wooden element having a wood grain exposed end surface;
(b) contacting the wood grain exposed end surface with a liquefied moisture impervious material, and moisture impervious coating to be formed on the wood grain exposed end surface; and c) applying a moisture impervious plate to the coating, and securing the plate to the wooden element.
a) providing a wooden element having a wood grain exposed end surface;
(b) contacting the wood grain exposed end surface with a liquefied moisture impervious material, and moisture impervious coating to be formed on the wood grain exposed end surface; and c) applying a moisture impervious plate to the coating, and securing the plate to the wooden element.
29. The method of claim 28, including the step of:
a) providing molten wax as the moisture impervious coating.
a) providing molten wax as the moisture impervious coating.
30. The method of claim 28, including the step of:
a) providing a plate forward from the group consisting of high density polyethylene and polyvinyl chloride.
a) providing a plate forward from the group consisting of high density polyethylene and polyvinyl chloride.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/953,243 | 1997-10-17 | ||
| US95324397 | 1997-10-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2233511A1 CA2233511A1 (en) | 1999-04-17 |
| CA2233511C true CA2233511C (en) | 2001-07-24 |
Family
ID=25493741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2233511 Expired - Lifetime CA2233511C (en) | 1997-10-17 | 1998-03-30 | Wood rot preventing wood casing end grain moisture barrier assembly and method |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2233511C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100557184C (en) * | 2005-08-12 | 2009-11-04 | 昆明红塔木业有限公司 | Wearable and abrasion resistant emulational artistic door with simulative wood grain |
-
1998
- 1998-03-30 CA CA 2233511 patent/CA2233511C/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100557184C (en) * | 2005-08-12 | 2009-11-04 | 昆明红塔木业有限公司 | Wearable and abrasion resistant emulational artistic door with simulative wood grain |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2233511A1 (en) | 1999-04-17 |
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| EEER | Examination request | ||
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Effective date: 20180403 |