Unfortunately many of todays consumers are receiving inaccurate information regarding cracks in stucco. Stuccolok removable flashing for stucco construction. The general contractor and the stucco sub have said that the placement of. Control joint fry reglet fry reglet home fry reglet.
For more than 65 years, fry reglet has been the trusted source for aluminum. May 01, 2017 the contractor must rely on the project documents to determine whether control joints will be utilized and, if utilized, where the control joints are to be installed. The cracking of joints, especially knuckles, was long believed to lead to arthritis and other joint problems. Specially designed connector clips are provided for alignment and base for.
We carry all types of fry reglet products and components. As you might have guessed from the name, this type of stucco crack resembles a spider web on your siding. Stucco is particularly susceptible to cracking around windows and trim boards, where its applied thicker to create architectural character. The stucco lok removable flashing is designed to prevent shattering of the parapet stucco by allowing reroofing without bending up the reglet. Cracking joints is manipulating ones joints to produce a distinct cracking or popping sound.
Movement control joints are an essential part of the. If the stucco is not combined well, it will create weak areas in the dried stucco. Expansion joints are installed where structural movements are anticipated in a building. Observing a certain cracking pattern and relating it to its likely causes can be a challenging exercise.
Stucco lok removable flashing for stucco construction. As a result, the stucco is likely to be thinner over studs and thicker across stud bays. Stucco control joints are used to help aid in preventing cracking in the stucco overtime. Fry reglet ist, stucco inside corner 24 gauge galvanized steel flashing. Cracks normally occur in the base coats and simply transfer through the finish. Drywall control joints, referred to in some products and literature with the misnomer drywall expansion joints are used prevent cracking in gypsum wallboard. Fry reglet drywall expansion joint is used in long drywall runs to prevent cracking of drywall joints caused by minor settling in normal building conditions, wh. Control joints are installed to help reduce the cracking.
Standard leg lengths are 6 from the center point of the reveal. Where stucco has been properly placed and cured, this should not be. The new drywall was painted and looked beautiful for the first six months and then after the winter thaw you start to see seams cracking and screws popping through the paint. Light steel framingall gauges, plaster shaftwall systems, stud and track, zfurring. Egg crate, cracked ice, and prismatic fixture lenses. Often this cracking is a result of a complex combination of events. As the concrete block is installed the mortar joints can shrink causing cracking along the mortar joints. The stucco manufacturers association offers the following guidelines regarding stucco cracks.
Fry reglet drywall expansion joint is used in long drywall runs to prevent cracking of drywall joints caused by minor settling in normal building conditions, when installed in accordance with astm c1063. In truth, it is not abnormal to have some cracking with stucco, much of which can be relatively harmless. Stucco crack reduction system optional refer to sma website for more information. Molding provides a reveal joint and screed point in stucco soffits. One concern of this otherwise excellent material is its inherent cracking not only causing visual blemish, but also leading to possible water intrusion that could result in concealed damage. Resists corrosion on applications of plaster and stucco a solid flange or wing zinc control joint that resists corrosion on interior and exterior applications of plaster and stucco. Traditional stucco or hard coat stucco is made up of several different components, one of those being the hard coat itself. Ghosting is caused by several factors but is preventable with care and precautions. Designed to control cracking designed to relieve stress and assist in controlling cracking in large areas of walls and ceilings.
Stucco, like all cementitious products is susceptible to cracking. Designed to relieve stress and assist in controlling cracking in large areas of walls and ceilings also creating 14 to 112 reveal in stucco and plaster. Capitol building supply serves both commercial and residential customers and offers the largest inventory of construction supplies in maryland, virginia, and washington d. So, be extra careful not to miss this kind of stucco crack. Over 55 years, fry reglet has become a trusted source for all the products, details and support that make buildings more functional, beautiful and economical. Onepiecetype, folded pair of unperforated screeds in configuration. These expanded metal trims and expansion joints are produced from hotdipped galvanized steel that comply with astm c1063 and c841. To ensure full satisfaction with the stucco assembly, reasonable expectations should be established with respect. The term ghosting in stucco refers to the visibility of the mortar joints in the concrete masonry wall substrate.
Do you have a responsibility to install control joints if they are not clearly. As the premier provider of metal lath products to the construction industry, cemco offers expansion joints and expanded corner beads manufactured by niles building products, inc. Separates wall sections and allows minor independent movement of sections on either side. Channel screed f reveal plaster key reveal molding f drip cap pdf dwg dxf pdf dwg dxf pdf dwg dxf pdf dwg dxf reveal molding t reveal molding v reveal molding 2 14. These control any cracking by preventing the crack from running the length of the.
Capitol building supply offers a full selection of fry reglet products at our yards, including. It is the purpose of this article to define normal cracking as opposed to excessive cracking. The scratch coat should be applied at a uniform thickness of 38 inch to. The main cause for this stucco crack is from the base coat not curing properly. The sma and member plastering contractors are constantly striving to improve stucco. Installed vertically or horizontally, they provide an attractive reveal consistent with the appearance of other fry reglet moldings. As the concrete block is installed the mortar joints can. Joint compound, setting type compound, primers, plaster. Cracks are more noticeable cracking is the most offensive problem. Mar 03, 2016 now that you know why stucco cracks, lets find out how serious a stucco crack can be. Why is it that the subject of control joints only comes up after the finishes are completed and some cracks appear. These control any cracking by preventing the crack from running the length of the building. The sma and member plastering contractors are constantly.
Avoid cracked plaster by using stucco control joints. Stucco is particularly susceptible to cracking around windows and trim boards, where its applied. The reglet provides an expansion joint to prevent roof heat from cracking the stucco. Trimtex fry reglet pittcon industries clarkdietrich. The stuccolok removable flashing is designed to prevent shattering of the parapet stucco by allowing reroofing without bending up the. To ensure full satisfaction with the stucco assembly, reasonable expectations should be established with respect to cracking prior to selection of the stucco assembly and plastering contractor. Fry reglet is a trusted resource for unique metal components suitable for a variety of construction projects and architectural design needs. It is sometimes performed by physical therapists, chiropractors, osteopaths, and masseurs in turkish. Fry reglet aluminum reveals and moldings shall be extruded alloy 6063 t5, with chemical. Vinyl control joints have a very similar design to same accessory made of metal. A common area for them to be installed on a 2story residential home is at the floor line of the second floor.
Depending on the type of movement expected, the joint must be able to move in one direction or two by using some combination of materials, or by prefabricating the joints at the job. Fry reglet is the premier name in architectural trims for drywall and plaster. Control joints by jeff bowlsby, ccs, ccca ortland cement plaster, also known as stucco, is a popular and common exterior wall cladding finish. Fry reglet 2piece plaster control screed is used inside plaster or outside stucco to prevent cracking.
In order for stucco to be durable, it must be mixed properly. Below are some common reasons stucco may crack and who may be at fault. It is sometimes performed by physical therapists, chiropractors, osteopaths, and masseurs in turkish baths. When veneer plaster is specified, the flanges must be treated with a bonding agent. You have just moved into your new house or reoccupied the rooms that you had renovated.
Jul 23, 2008 as a result, the stucco is likely to be thinner over studs and thicker across stud bays. Where stucco has been properly placed and cured, this should not be evident. This nearly inconspicuous expanded wing control joint minimizes cracking and assures proper plaster and stucco thickness. Cracking can develop as a result of the shrinking process. Windows and doors in a wall are weak places in the wall. The control joints are typically placed in 10 to 20 ft square sections like you would see in concrete floors. Continuous compression seal prevents air and dirt infiltration through joint.
Stucco cracking in portland cement plaster base coats. Expansion joints versus control joints control joints cj are 1piece joints designed to relieve stress and minimize cracking. A common area for them to be installed on a 2story. Certain fine or smooth textures accentuate cracks in stucco, while heavier textures tend to hide stucco. The use of sealant at all butt joints and fry reglet. From time to time, even stucco manufactured and installed correctly will crack. One concern of this otherwise excellent material is its inherent. Vinyl control joint clarkdietrich building systems. Three hairline cracks appeared at butt joints on a windy day. In determining the use or extent of control joints, the contractor will examine the specifications for quality or the performance requirements of a product and the construction.
Reglet trim can be made of metal or vinyl and is used in place of traditional. Since there was stucco siding, we first put down icewater shield on the roof. Movement control joints are an essential part of the weathertightness performance of an external plaster finish. The joint between wall and floor should be kept open with what. When veneer plaster is specified, the flanges must be. Surface connector clips are provided for alignment and base for sealants. We were hired to reflash the walltoroof connection on the back porch. Expansion joint as the premier provider of metal lath products to the construction industry, cemco offers expansion joints and expanded corner beads manufactured by niles building products, inc. Channel screed pdf dwg dxf pdf dwg dxf pdf dwg dxf pdf dwg dxf. Once moisture or water gets inside a wall, it will inevitably cause further damage.
The expansion joints help with the buildings movement allowing it to expand and contract,preventing cracking. P g fry reglet factory fabricated intersections factory fabricated intersections and corner pieces of the same or different moldings are used to connect horizontal and vertical joints, or transitioning from plane to plane. The stucco contractor placed what looks like black tar paper for the breathable barrier and mesh for supporting the stucco. Many of the stucco cracks on block wall reflect the cracks or weaknesses in the block wall. The control joints are required to form membrane panels no larger than 100 sq. The fry reglet ist is especially made for stucco applications.
Apr 25, 2019 the control joints are typically placed in 10 to 20 ft square sections like you would see in concrete floors. However, they can provide a pathway for moisture and water to enter into a wall system. Used to straighten an inside corner for a neat straight edge. Three coat portland cement plaster system with integral color finish coat with acrylic finish. The general contractor and the stucco sub have said that the placement of expansion joints at all corners of the windows and doors is per the specifications. There are many theories as to why joints crack or pop, but the exact cause is simply not known. Stucco joints can also separate different textures, colors, or materials. The new drywall was painted and looked beautiful for the first six months and then. September 2016 newsletter stucco manufacturers association. The modern wall base, 4 ways barley pfeiffer architecture.
Plaster accessories gypsum board gypsum board accessories and trim 09 29 00. Gypsum board accessories and trim masterformat 09 29 00. Stucco control joint question exterior inspections. Stucco cracking over concrete block the home experts, inc. The compaction of the stucco necessary to attain the desired hard, smooth finish. Jun 28, 2014 we were hired to reflash the walltoroof connection on the back porch. Aug 15, 2017 as you might have guessed from the name, this type of stucco crack resembles a spider web on your siding. Actually, a little minor cracking would be acceptable over the look of the expansion joints. A few of my favorite quality manufacturers are pittcon industries, fry reglet andtrimtex. The block expands and contracts as discussed above. Sma executive director mark fowler discusses how the stucco. Project items include working on a largescale fire test, revising continuous insulation protocols, a planned joint meeting. If we wanted any of the joints taken down, they said we would have to sign something saying. Stucco manufacturers association guide specificationiton.
Severely painful crepitus is best checked out by a health professional. As a result, the mere sight of a hairline crack causes great concern. Design guide edition 15 fry reglet corporation, 18002379773. Fry reglet co, concrete flashing reglet, 26 ga galv 250 ft. Prior to production, shop drawings are provided to customers to be sure the finished product is exactly as specified. Cracking joints and popping knuckles are an interesting and poorly understood phenomenon.
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