Патент USA US2118632код для вставки
May 24, 1933- .1. |_. WETTLAUFER 2,118,632 BUILDING MATERIAL Filed July 8, 1931 INVENTOR. a/u/as A. Weft/1114186!" ATTORNEY. Patented May 24, 19738‘ _ 2,118,632‘ UNITED STATES. PATENT OFFICE BUILDING MATERIAL 7 ‘Jules L. Wettlaufer, Belmont, Mass, assignor to The Patent and Licensing Corporation, Boston, Mass., 'a‘ corporation of Massachusetts Application July 8, 1931, Serial ,No.‘ 549,432 ’ 7 side walls of a building. 5 , 13. Claims. This invention relates‘ to jbuilding material adapted to be used as a weatherproo?ng and an artistic covering medium for theiroof and/or '_ in order to prevent‘the weathering elements from This invention ?nds va special application in that class-of materials generally designated by_ the term, composition building material. , -- . driving up and ‘under that portion above‘ thetops of the notches and reaching the structure to be_ protected. Of \course, with this particular con struction a good. deal of material is necessary 5 tolproduce a wea‘therproofing‘ covering. . '1 Moreover, owing to the fact that each strip ' Material of this character. generally comprises has a portion of I but one row of brick simula—. a felted foundation or base, saturated or impreg tions thereon,.'a considerable number of these nated with a waterproo?ng compound such as strips must be laid to" properly cover one square 10 asphalt or similar bitumen, and coated on one or ‘ of ‘surface, the term “square” being generally both sides with ap'high melt point asphalt or used to designate one hundred square feet of similar bitumen having partially embedded there , v , in a layer of comminuted slate, slag or the like. 16 At the present time,this material is. produced 'in elements of different shapes and sizes", said elements being. generally known in the trade as shingle units, stripv shingles ‘and roll’ roo?ng. _ _ These different elements ?ndv extensive use as " 2 a covering medium because they can be laid to ‘provides weatherproof covering medium'pre senting an artistic. design. _ 9' . ' . One of. the speci?c aspects f’ the many pleas 2 ing weatherproof wall cove ng designs, which may be produced with this type of‘ material, is that of a brick wall with the usual mortar joints. For this purposeit has, heretofore, been cus surface. Where thirty-six by seven men strips are laid with a one inch head ‘lap and a three inch exposure to provide a brick simulating cov- .15 - ering be protected, for‘one 233 hundredgsquare square feet'of feetmaterial of surface is, reto quired. ' 7' ' ‘ - The employment of the. strips embodyingv my invention and hereinafter particularly described 20 enables a square of wall surface to be adequately covered and simulate a'brick. wall by using a ' smaller number of strips and less material. An object of my invention is to provide a com position ,building' material‘ of predetermined 25;. multi-course- designs which can be laid to provide ‘ a weatherproof wall covering and brick, stone, tomaryto' employ strip shingles consisting of a tile or other like wall simulation. body having a plurality of spaced tabs in a sin. Another object of my ‘invention is-to provide a composition building material of multi-course ,0 '30 glecourse de?ned .by vertical slots. These strips are surfaced with granules in‘such a manner'that designs which require a minimum amount of ‘ the tab- areas extending from the butt edge of , time and material in laying a weatherproof stone,_ s -'the strip upward to slightly below the “tops of Erick, tile or other like wall simulation. Other objects will ‘be apparent from ‘the fol-~ the cut-outs shall simulate bricks, and there maining .portion of the strip shall simulate mor tar. ~ I ' r ' V lowing speci?cation and the attached drawing 35 ‘ wherein, ' _ 2 , ‘ , v Figure 1 illustratesa plan view of a portion of _In order that the strips may be laid to closely simulate a brick' wallf they are applied in adja a wall covering composed of“strips, such as that cent relation in each course and in overlapping One of the’ rec-9 40 relation in successive courses. shown in Figure 2; v - ' ' I ,_ l I Figure 2 is a plan view of a strip shingle em- ‘0 ognized prerequisites of the size of these strips vbodying my invention; > is that their width be of atleast a predetermined are laid in successive overlapping courses and 4 Figure 3 is.a plan 'view of a strip shingle em bodying my! invention and is a modi?cation of the strip shingle shown in Figure 2 ; 3Flgure 4 illustrates a plan view of a ‘portion of 45 1 a wall covering .composed'of strips, such as that with the amount of- exposure of each course be- . shown in Figure 3. minimum dimension in order that asu?iciently weatherproof covering may be obtained. For ex 45 amplerwhere the strips having ‘three inch slots . . ‘ ‘ ing approximately three inches, it is necessary In accordance with my invention the novel that the total width of the strip be somewhat. covering means may be in strip shingle or roll 50 more than twice the exposure ‘dimension andv in roo?ng form. One embodiment of my invention this instance would probably‘ be about seven "as shown in Figure 3, comprises a composition ‘ inches. Thus, the strip would have a; one inch. building strip of ‘generally rectangular shape head lap so that the tops of the notches of any one course would be a su?icient distance‘below 55' the upper edge of a strip, in a subjacent course with side edges H and I2 and upper and lower edges l3v and M respectively. Along the bottom edge‘ ll oi’ the strip, are a plurality of parallel 2 2,118,682 , tab de?ning slots 2i spaced from each other a distance corresponding to the length of a com mon brick. Although the dimensions of these slots may vary within certain limits, it is pref erable that their lengths correspond to the ap proximate depth of an ordinary brick and their width correspond to that of an ordinary vertical mortar Joint of a brick wall. Spaced above the top edges of this row of slots 2| a distance cor 10 responding to the depth of a horizontal mortar joint of a common brick wall are a plurality of slots 22. These slots 22 are located so that the longitudinal median line of each of these slots is approximately coincident with the transverse 15 median line of the area therebelow and between the slots 2i. These slots also need not be of exact dimensions, but for the purposes of this inven tion it is preferred that their width be substan tially the same as that of the slots 2! and their 20 length be equal to that of a slot 2| plus the depth of a horizontal mortar joint of a brick wall. The simulating area. The purpose of this particular design is so that when the strips are laid in the customary manner side by side in any one course, the quarter brick simulation of one course will be immediately adjacent the three-quarter brick CW simulation in the same course of another strip immediately adjacent thereto and together will form a full brick simulation. Moreover, when the covering is laid in the ordinary manner of overlapping courses with the slots 2i of an over- lapping course appropriately staggered with re spect to the slots 22 of a subjacent course, the line of juncture between adjacent strips of the lapped portion of the subjacent course will not be in line with the slots of the overlying course, 15 but will be covered by the brick simulating areas of the overlapping course. These strips are laid in the customary man ner to provide a brick wall simulating siding by ?rst applying to the lowermost longitudinal area 20 of the side wall a strip of roll roo?ng of approxi top portion of the strip measuring from the tops mately the same width as that of the shingle of the slots 22 to the upper edge i3 of the strip is ‘ strip to be applied and having its top surface of a width preferably slightly greater than the of the same color as that of the mortar joint distance from the butt edge ill of the strip to simulating areas on the face of said shingle 25 the tops of the cut-outs 22. strip. Then a shingle strip embodying my in In order that the lower portion of each strip vention is positioned thereover in a horizontal when laid may simulate a plurality of courses of relation, with its left hand edge coinciding with brick with the usual mortar joints therebetween, a corner of the building, and appropriate fasten 30 with a clear line of demarcation between the ing means such as nails are driven therethrough 30 mortar joint and brick simulating areas, and so at any convenient points, and preferably slightly that the latter will stand out against the mor above the slots 22, and into the supporting tar joint simulating areas, the upper face of the structure. ‘ strip or that face to be exposed may be consti The next strip of that course is laid by posi 35 tuted in the manner hereinafter presently de tioning it over the already applied roll roo?ng 35 scribed. The total upper face of the strip, name and locating it so that its left hand edge is closely ly that face to be exposed, has a coating of as adjacent to the right hand edge of the previously phalt or similar bitumen thereon. Preferably applied strip and its upper and lower edges are the asphalt coating is of predetermined and equal 40 thickness on those areas of the strip extending from the butt edge thereof to the tops of the cut outs 2i and from the/bottoms ofthe cut-outs 22 to a distance slightly below the tops of the cut outs 22, corresponding to the depth of a hori 45 zontal mortar joint of a brick wall. The asphalt coating onthe remaining area of the strip com .prising the areas between the upper and lower limits of the lower and upper coatings respec tively and between‘ the upper edge of the strip 50 and the upper limit of the upper coating, may also be of predetermined thickness and prefer ably of less thickness than that of the other coated areas. In order that the rectangular areas having the coating of greater thickness 55 thereon and de?ned by the butt edge of the strip,~_ the longitudinal edges of'the slots, and the upper ' and lower limits of the thicker coatings may sim ulate bricks, the coating on these rectangular areas has partially embedded therein a layer of 60 relatively coarse mineral granules such as com mlnuted slate, slag or the like of any desired brick color. The remaining or thinner coating layers adjacent thereto and of a color' contrast ing with that of the surfacing material need not 66 be surfaced, but I prefer to surface these areas with. talc, mica or other relatively ?ne grits of mior and contrasting with that of the brick surfaced areas. Moreover, in order that these strips may pro vlde an e?lcient weatherproof covering simulat ing a brick wall, the strips are of such length that the respective end brick simulating areas 30 and 3| on each end of ‘the strips are respec tively less than and preferably about one quarter 75 and three quarters the length of a full brick in substantial alignment with the corresponding limits of the previously laid shingle. At this stage, 40 as before, it is to be fastened to the supporting structure by nails driven therethrough and. into the supporting structure. Thus, the first course may be completed by a repetition of these simple operations. After the ?rst course has been properly laid, the next succeeding or overlapping course is ap~ plied. In order to provide an e?icient weather proof covering closely simulating a brick wall and so that the line of juncture between the ad: jacent strips of a subjacent course shall not coin cide with either a slot in or the line of juncture between adjacent strips of a succeeding or over lapping course the initial strip of the next suc ceeding or overlapping course is preferably not a full or normal length strip but comprises a shorter strip having its end brick simulating areas corresponding to those on a full or normal length strip. This shorter strip is laid with its left hand edge coinciding with the corner of the building 60 and with the left" hand edge of the ?rst full or normal length strip in the previously laid course, and its butt edge coinciding with the tops of the cut-outs 22, in the subjacent course. A plurality of nails are then driven therethrough at that portion of the strip above the tops of the cut“ cuts 22, and into the supporting structure. As before, a full strip is laid with its left hand edge coinciding with the right hand edge of the pre viously laid strip and with the upper and lower 70 edges of the full strip being in line with respective limits of the previously laid shorter strip, and a plurality of nails driven therethrough at any appropriate place. The course may be completed with full strips in the manner heretofore out 75 oneness L lined. When'usingstrips oi this particular de endure section 65 projecting outwardly from the‘ sisn'. care should be taken in laying a'shorter upper part'of the portion 52, a distance corre ship as heretofore outlined,‘ as the vinitial ‘strip spending to the width of a mortar joint, is spaced in alternate courses. in order that all the brick simulating areas; on a strip having a portion thereof simulating a pinrality of courses‘ of bricks with the usual horie inwardly from the doc edge Fill a distance corre sponding to the width of a mortar joint plus one hulf the length of a rectangular area de?ned by two adjacent slots til. . rental mortar joints therehetween, shall be ~oi ’ 5 ‘ The total upper face of thestrip has a coating t is some length and so that there shall he no oi asphalt or similar bitumen thereon and pret possibility of a “lirealr‘ in ‘any full brick simu erehly the amhoit coating is of predetermined » toting area in a completed wall covering struc Vandnreater thickness on those areas of the strip , ' ture, 1 preferably provide the shinele strip illus trutedfin Figure 2." - As shown, the strip consists oi‘ on upper portion it of a‘width preterahly extending from the butt edge thereof to the tops . oi the cut-outs he and from the lower edge of the slots to to the limit that is spaced down elishtly greater than the depth of a two course ' wardly from theiupper edges of the slots-6t e 15 hrich wall with the usual mortar Joints, an inter mtance corresponding to the depth of a hori~ rental mortar joint. The asphalt costing on the‘ remaining area of the strip, comprising the cross mediate portion 5! ofa width corresponding to the depth of a common hrich and slower por tion d2 'of a width equal to the sum of the depths ltd of a brick and horizontal-mortar loint, all por tlons being of general rectangular shape. The lengths of the portions ‘5i and 52 are suhstsntimly the same and approximately equal to the length hetween the upper and lower limits of the lower and upper coating respectively and/.hetween the so upper limit of the upper coating and the upper edge tit, may also he of predetermined and pret l erahly of less thickness than that of the ?rst men“ tinned coating. The thicker coating areas have’ or vjoint.~ The upper portionvtd has side edges pertlally embedded therein a layer of relntively coarse grits such as crushed slate, sing or the litre respectively, and’ it! and. and upper theand intermediate lower limits portion Eli and ill hos “or any desired hrick color. The remaining or upper and lower limits to and ti, respectively thinner coatings may he left unsurtaced or sur and side edges 58 and 5%. The portion ti hes faced, with powdered talc, mice or relatively ?ne or’ the portion 60 minus the width of a mortar therein dividing ait plurality. intourareasofofspaced equal lenuths parallel with slots the 1 length of each/area being preierahly'ahout the ‘ some as the corresponding dimension of a corn neon hrick. These slots dll are preierahly of a width corresponding to that ol‘ a mortar joint and‘have their bottom edges opprordmntely coln~ cident with the lower limit tilt of the section hi ‘ end theiritop edges located on the portion “oil” and spaced above the upper limit Hit of the sec tion ti a distance corresponding to the depth of n horizontal mortar joint. vthe side edge is spaced inwardly from the'edpe lit a distance cor— responding to the width of a slot or a. cut-out‘ tit plus one quarter the leneth oi an area deiined hvtwoadiacent slots end the side edee is spaced outwardly irornthe edge ht a distance corresponding to one-quarter the length of on t nrea'deilned by two adjacent slots. ‘ one lower portion ht, oi‘u width corresponding’ to s distance ‘equal to the ‘depth old cornrnon lirlclr plus the depth of a horizontal mortnr joint, upper and lower limits till end respectirelt mineral grits of a color and site contrasting with v ‘ that of the lorich colored granules. . These strips may he applied with once and despatch in the tollowing manner: First, a strip of roll routine, or veppropriate width and whose surface to he exposed ls suh» ‘ stn-ntislly the some as that of the mortar joint simulating areas on the strips, is laid on the longitudinal lease area oi the side well to he cot/ ered'. Starting at one edge or’ the well, n. strip such as shown in theme d, but severed alone a line through the side edge is laid over the roll roo?ng strip with the severed edge helps sub stantlally coincident with “the edce of the well ‘ and the strip proper being‘ in a substantially hori-= rental position. “thereafter the next shingle strip & ‘oi ‘that course is laid in the sonic horieontal din rectlon with its edges tit, ht and St? located hn~ mediately and in the adjacent previously the laid respective strip. ‘edges Thy referring till, to Figure i it will he ohserved that hetween the. edges and nnd'the edges tt and oi the odlacent strips there is formed a slot substantially q end ‘side edges 62 and ht. located on said lower ldcntlcalwith the slots (tit and till in each strip. . portion and extending irorn the hutt edse ill ‘the second course may he laid lnthe usual nosne thereof to a distance, helow the upper limit til, per, care, however, heine tahen in properlyseve V £15 corresponding‘ to the width of a mortar loint ere or e; the initial strip for the second and other a plurality of 'parullel spaced non whose lonel alternating courses so that when the correspond“ _ tudlnal'center lines are opproinmly coincident _ ins strip lssieid adjacent thereto in that course with the transverse center line of the areas there the lines oi’ juncture hetwe'en the edges lit/and > uhove defined by the slots ill. oi’ ndlacent strips shall not he in line with the hit divide the lower portion into rl'lciese n plurnlity slots oi’ slots of the nest succeeding course to he applied. it is to he ohserved that where thirtymsix hy ' trees of equal lengths, with the length oi?each open corresponding to the lensth ot a common . thirteen inch strips are laid with e, sin inch one hrlotr.‘ it is to he observed thatthe slots (ill and ‘, posure and n oneuinch head lap to provide a bricl; ‘ ‘ore of approximately the some width end that well simulating covering for one hundred square on the vertical distance from the tops oi’ the slots feet oi’ surface to he protected, only twouhundred to the bottoms of the slots to is equal ‘to the ililtproulmate depth of, o, horlnontal niortnr joint“ tithe side e it extending hetween the hori and siuteen square feet of material is required. - .lln view of the torepoins it is opponent that s. nolnlni amount oi material is required, and rt .-uontol limits of the lower portion is spaced out»' thnt toy employing a two course hriclr shingle strip wurdly irom’?the side edge a distance corre 'elnhodrlne my invention there is approximately sponding to the sum oi- the width of a’ mortar‘ a [let per cent snvtne in material. Another advantage oilniy invention resides in : joint and one-hall" the length ct‘ s. rectangular urea; de?ned by-th'e slots tt; and the laterol edee the reduction, for any given ‘number of courses in unit urea, oi the horizontal erposed edsesgw r extending from the lower limit‘ ti up to 4 2,118,682 which may be blown upwardly by the wind and which are susceptible to other adverse in?uences by the weather. Although I have speci?cally described my in vention in conjunction with a shingle strip, this is by no means to limit the scope of my invention. Some of the other possible modifications ofmy in vention are a shingle strip of inde?nite length and constituting whatis generally known in the 10 trade as roll roo?ng; a laminated structure con and thereby a space is left between portions of the end edges of adjacent sheets to simulate the vertical brick joint at the end of said sheet. 3. A covering sheet for laying upon the sur face of a wall in overlapping arrangement with similar covering' sheets which comprises a base of impervious material and having extending across the portion of the sheet to be exposed a' plurality of parallel stripes and having cuts in the base between the stripes in staggered arrange sisting of a suitable base having adhesively se ment simulatively to demark the bricks and to cured thereto by asphalt or similar adhesive com simulate respectively the horizontal and the ver position a building strip whose entire upper face tical joints of brickwork laid in courses, the ends is divided into a plurality of brick simulating of the‘. sheets being‘ cut in stepped form along 15 courses with the usualmortar joint simulations said simulated joints, the end-of the portion of therebetween as shown in .the lower portion of the sheet to be overlapped being in stepped rela Figures 2 and 3; and a shingle strip or roll roofing tion to the cuts simulating the vertical joints whose entire upper face is divided into a plural of the brickwork. ’ ity of brick simulating courses with the usual 4. A covering sheet for laying upon a surface mortar joint simulations therebetween. The last in overlapping arrangement with similar cover mentioned modi?cation may be applied directly ing sheets which comprises a base having upon to a side wall whose face is similar in color to the portion to be exposed thereof a simulation that of the mortar joint simulating areas, or of masonry units laid in a plurality of courses whose face may be first coated with a bituminous ‘with longitudinal and transverse mortar joints adhesive before the application of said element. therebetween, the end of~the portion to be over Moreover, I'do not wish to be limited to the num lapped of said sheet being on a line which if ber of brick simulating courses in each strip, and extended would pass intermediate the simulating I have described a two course brick simulation as transverse joints of the masonry, the longitudinal a convenient means of illustration. I appreciate length of said portion .to be overlapped being that where the head lap is constant and the num~ greater than the longitudinal length of the por ber of brick simulating courses in each strip is tions of the sheet which simulate the courses of greater than two, the amount of material re quired to cover one-hundred square feet of sur face is lessened. I claim as my invention: 1. A covering sheet for laying on a surface in overlapping arrangement comprising a base hav ing the portion thereof intended to be exposed demarked‘by a plurality of parallel stripes across the sheet and by cuts in the base extending trans versely to the stripes into areas simulating bricks laid in a plurality of courses with the vertical ‘joints of one course offset from the vertical joints of the adjacent courses, the ends of said exposed portion of the sheet being cut in the offset form along the lines of the end brick simulating areas of the sheet but having for each simulated hori zontal joint at an end thereof a portion of the base extending beyond the end of an end brick simulating area to provide an abutment against which to abut the end of a similar sheet so as to leave spaces between the ends of the sheets to simulate vertical joints of brickwork. ‘2. A covering sheet for laying upon the sur face of a .wall in oveslapping arrangement with similar covering sheets which comprises a base, 10 15 20 25 30 masonry by an amount equal to the width of a transverse mortar joint. 5. A covering sheet for'laying upon a surface in overlapping arrangement with similar cover 35 ing sheets which comprises a base having upon the portion to 'be exposed thereof a simulation of masonry units laid in a plurality of courses with longitudinal and transverse mortar joints therebetween, the end of the portion to be over 40 lapped of said sheet being on a line which if extended would pass intermediate the simulating transverse joints of the masonry, and longitudi nal length of said portion to be overlapped being greater than the longitudinal length of the por tions of the sheet which simulate the courses of masonry by an amount equal to the width of a transverse mortar joint, the length of the simulated longitudinal joint being also greater than the longitudinal length of said portions of the sheet simulating courses of masonry by an amount equal to the width of a. transverse joint. 6. A covering sheet for laying upon a. sur face in complementary arrangement with simi lar covering sheets which comprises a base hav ing upon at least a portion of the surface there 55 a plurality of parallel stripes extending across of a simulation of masonry units laid in a plu the exposed portion of the sheet and spaced apart vrality of courses with mortar joints therebe distances equivalent to the depth of a brick to simulate horizontal joints of brickwork, cut-outs in said base extending between said stripes at right angles thereto and having the width of“ and being spaced apart inthe direction of the stripes distances to simulate the vertical joints of brick work, the ends of said exposed portion of the sheet being cut in stepped arrangement along tween, the longitudinal boundaries of said por tion of the surface extending along lines coinci 60 dent with the simulated longitudinal joints of the masonry, the transverse boundaries of said area being at the ends of the sheet and complet ing an outline at said ends having a stepped form rising at each end in the same direction longi tudlnally of the sheet. the simulated brickwork joints, the portions of , 7. A covering sheet for laying on a surface in the base upon which are simulated the horizontal . overlapping arrangement including a portion brick joints being extended beyond the end of an 70 adjacent brick simulating, area in the direction lengthwise of said horizontal joint for a distance equal to the width of the vertical joint and with a height equal to the width of the horizontal joint whereby’ an abutment is formed against which the opposite end of a similar sheet may be laid ~thereof to be overlapped comprising a base hav ing at least a part of the surface thereof de 70 marked by at least one stripe across the sheet and by cuts in the base extending transversely to the stripe into areas simulating masonry units laid in a plurality of courses with mortar joints therebe tween in oil'set arrangement, the ends of said 75 2,118,682 sheet transverse to said stripe being of the stepped form of the o?set arrangement of the joints of the masonry as provided by cuts along the stripe, each joining two transverse cuts, and the edges of said portion to be overlapped being not in line with vthe lines of said‘ simulated joints in the exposed portion. > 8. A covering sheet for laying von a surface in overlapping arrangement including a portion 10 thereof to be overlapped comprising a base hav ing at least a part of the surface thereof de marked by at least one stripe across the sheet and by cuts in the base extending transversely to the stripe into areas simulating masonry units laid 15 in a plurality of courses with mortar joints there between, the ends of said sheet transverse to said stripe being cut in such stepped form correspond ing to that of the joints of the masonry that cuts in the areas simulating the masonry units are avoided, the end edges of the sheet and the edges joining one stepped end edge with another being along the line simulating respectively the end edge and a lengthwise edge‘ of a masonry unit, and the edges of said portion to be overlapped 25 being not in line with the lines of said simulated joints in the exposed portion, 9. A covering sheet for laying upon a surface in complementary arrangement with similar cover 5 11. A covering for laying upon a surface upon which is simulated a plurality of courses of masonry units, said simulated masonry units being provided by discontinuous longitudinal transversely spaced stripes having a surface char acter simulating the masonry units, said discon tinuous ‘stripes being separated by continuous longitudinal stripes having‘a surface of a charac ter contrasting with that of said discontinuous stripes to simulate the longitudinal joints of 10 masonry, said covering having cuts therein ex tending transversely of said continuous longi tudinal stripes and dividing said discontinuous stripes into a series of areas simulating the masonry units, said cuts being so formed as to 15 simulate the transverse joints of the masonry, said covering having the edge thereof extending generally transversely of the longitudinal dimen sion of the covering cut longitudinally along the longitudinal joints and transversely along the transverse joints of the masonry. 12. A covering sheet for laying upon a sur face in complementary arrangement with similar covering sheets, which comprises a base having upon at least a portion of the surface thereof a 25 simulation of masonry units laid in a plurality of, courses with mortar joints therebetween, the ion gitudinal boundaries of said portion of the sur ing sheets and with a portion of its surface over-l . face extending along lines within the simulated 30 lapped which comprises a base having upon at longitudinal joints of the masonry, the transverse 30 least a portion of the surface thereof a simulation boundaries of said portion extending along lines of masonry units laid in a plurality of courses within the simulated transverse joints of the masonry ‘and completing an outline for said por- with mortar joints therebetween, the longitudi tion having an offset form. nal boundaries of said portion of the surface ex 13. A covering sheet for laying upon a surface 35 35 tending along lines coincident with the simulated longitudinal joints of the masonry, the transverse in overlapping arrangement with similar cover boundaries of said area being at the ends of. the ing sheets, having demarked on the portion there of to be exposed a simulation of a plurality of sheet and completing an outline of said end'hav courses of masonry units laid with joints there ing a stepped form, said transverse ‘outline con forming to the transverse joints of the masonry, between, the transverse joints of the masonry 40 and an edge of said portion to be overlapped being simulated by cutouts in the sheet exposing being not in line with the lines of said simulated therethrough the surface of an overlapped por ' joints in the exposed portion. 10. A covering sheet for laying upon a surface in ' - complementary arrangement with similar cover-v tion, which overlapped surface has its extent in ing sheets and with a portion of its surface over lapped which comprises a base having upon at least a portion of the surface thereof a simulation of masonry units laid in a plurality of courses lating the plurality of courses with the joints therebetween and including a longitudinal joint with mortar joints therebetween, the longitudi nalboundaries of said portion of the surface ex tending along lines coincident with the simulated longitudinal joints of the masonry, the transverse a direction transverse to the courses greater than the extent in said direction of the portion simu 45 above the topmost course simulated on said sheet, whereby a multiple ply covering with a headlap may be laid upon the surface when the edge to be exposed of an overlapping sheet is laid a distance above said topmost simulated course a distance equal to the width of a longitudinal boundaries of said area being at the ends of the joint, the ends of said sheet having a form co inciding in the exposed portion of said sheet with sheet and completing an outline ,of said end hav ing a stepped form, said transverse outline con-s the simulated masonry joints upon the sheet, forming to the transverse jointsof the masonry - and the end edges of the overlapped portion and extending along the and edges of’the end . thereof being not in line with the lines of said masonry units in each course, and an edge of said simulated joints in the exposed portion. portion to be overlapped being not in line with the lines of said simulated joints in'the portion.