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Frequently Asked Questions
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  • How does the quality of BOLDStone's interior wall finishes compare to plain drywall?

  • No comparison. With drywall, only nails and joints are covered with a soft compound. BOLDStone's finishes coat the entire surface with a hard durable finish. The BOLDStone job looks and functions a thousand times better. Some drywall jobs look perfect too, but give them a few years and they often develop ridging, beading and nail popping.


  • Can BOLDStone's products be spray applied?

  • BOLDStone's texture coat products can typically be pumped/sprayed using conventional 'Hopper' guns and/or pumping equipment. Please refer to the 'Application Instructions' under the tab 'Literature' on this website. (The only exception at this time is BOLDPebble, which is to be troweled onto the surface.)


  • Can BOLDStone's products be applied directly to old concrete or concrete block surfaces?

  • Yes. When applying BOLDStone's products, make sure all surfaces of the concrete or concrete block are thoroughly clean, free of form oils, dirt, dust, or any element that can nullify bonding. Clean the substrate by acid etching and/or with a pressure washer and mild soap. Then level the substrate to a smooth surface with a slim coat if that is the 'look' that you desire. Let the slim coat dry. Prime and seal the concrete or concrete block with BOLDPrimer or BOLDBase, add the texture coat, and seal with BOLDStone's topcoat according to the 'Application Instructions' under the tab 'Literature' on this website.


  • Do BOLDStone's textured Acrylic finishes need a Sealer?

  • The short answer is 'No'. However, let me explain. In order to allow easier cleaning from trapped contaminates on the surface and to increase the life span of the texture coat a BOLDStone topcoat should be used. If the building is in a high graffiti, or high smog area then this topcoat is an excellent idea. If the BOLDStone textured acrylic finish is a bright color, then you may wish to use a topcoat to protect it from the harmful UV rays that cause colors to fade. (NOTE: BOLDStone products do not fade as quickly as acrylic paint.)


  • How do I clean the finish coat?

  • We have outlined procedures in our 'Maintenance' brochure. Basically, you can use mild cleaning detergents, and low water pressure "300/500 PSI", cool water, and a soft bristle brush. Do not use the following: any cleaner that is solvent based; high water pressure; hot water; or wire brushes.


  • Who do I contact if I need repairs?

  • Find the BOLDStone distributor nearest you. The distributor can give you a list of BOLDStone's 'Preferred Installers'.


  • What is efflorescence?

  • Soluble salts which can appear as a white material on cementitious products as a result of the introduction of moisture into the cementitious products.


  • How can efflorescence be removed?

  • Efflorescence can often be alleviated by dry brushing. More severe cases may require use of masonry cleaner in accordance with the manufacture's recommendations.


  • What is the primary cause of cracking in Stucco?

  • I am assuming you are asking about 'regular' stucco, not the synthetic stucco finish coat. BOLDStone only sells synthetic and elastomeric stucco finishes along with our other wall textured finishes. With synthetic and elastomeric stucco finishes cracks are minimized because of the elasticity of the acrylic binders in the texture coat. However, if the substrate cracks wide enough the texture coat cannot bridge the gap no matter how elastic it is. At some point the texture coat will crack. The standard synthetic finish will crack before the elastomeric finish.

    Now to try and answer your question about 'regular' stucco. This could apply to a one coat or a two-coat base stucco project. Either way a cementitious base is used.

    A concentration of stresses, which exceed the strain capacity of the cement can cause cracks. Besides stress, the following are some of the other main reasons that might cause Portland cement plaster (stucco) to crack.

    • Lack of proper moist curing
    • Failure to gap wood based sheathing panels
    • Poor mix formulation: too much water in mix, poor choice of sand
    • Too thin a plastic membrane
    • Poor workmanship



  • What is One Coat Stucco?

  • One Coat is a blend of Portland cement, sand, fibers and special chemicals, which will produce a durable, cost effective exterior wall treatment.

    One Coat Stucco provides design flexibility, durability, versatility and cost savings and it can be finished in a variety of ways including BOLDStone's synthetic finish coats, BOLDStone's elastomeric coatings. One Coat Stuccos' impact resistance is good, with an average of 2500 PSI. One Coat Stucco combines the "scratch and brown" into a single application of 3/8" to 1/2" thick coat. One Coat Stucco weighs only 5 - 6 pounds per square foot.


  • Can I apply a one coat Stucco on my home?

  • No. A one coat stucco is not a Do-It-Yourself product and must be applied by a certified applicator who is certified by the manufacturer.


  • What is the difference in Stucco and EIFS?

  • Stucco is a mixture of generic cement, sand and sometimes lime. Usually the system involves 'Metal mesh' (to hold the cementitious product to the wall) a 'scratch coat' (cementitious) then a 'brown coat' (cementitious) and finally a texture coat. (Preferable a BOLDStone product)

    EIFS (Exterior Insulation Finish System) is an exterior wall cladding system using a polystyrene base, fiberglass reinforcing mesh, cementitious basecoats, and a acrylic texture finish. (Again, preferable a BOLDStone product)


  • How do the costs of three-coat stucco and EIFS Compare?

  • Since there are so many variables with regards to size of job, logistics, scaffolding, etc., it is hard to give a straight answer to this question. However on an average wall area, the costs are somewhat similar with the standard EIFS generally being more economical. If there are additional trims such as cornice, quoins, window bands, etc., then the EIFS can be much more economical than the traditional stucco. If there is a need for resistance to high impact or expected high traffic at the location, the traditional stucco wall may be cheaper than the EIFS with extra layers of reinforcing mesh.


  • What is fog coating?

  • Fog coating is simply application of a stucco finish over the existing finish. Rather than being trowel applied, the stucco is sprayed, brushed, or roller applied. The stucco fog material is identical to the stucco finish that was trowel-applied over the original brown coat. The only difference is that aggregate is omitted from the mix (sand, perlite, etc.)


  • What is the durability of exterior Portland Cement Plaster?

  • It performs for the life of the structure if applied and cured according to ASTM standards.


  • What is the difference between a weep screed and a drip screed?

  • The purpose of a "weep" screed is to allow any water that reaches the back plane of stucco via openings between stucco terminations and dis-similar components, faulty or absent flashing, and the like, to run downward and escape at the bottom of the wall. The water runs between the stucco and building paper and escapes to the outside. Weep screeds are required at foundation plate lines by building codes.

    A drip screed is a device that directs water downward, like at an external wall/soffit angle. Drip screeds keep water from running laterally at the soffit, but they are optional. A "V" groove in soffit stucco about an inch back serves the same purpose.


  • Why use acrylic modifications in a Portland cement plaster?

  • Polymer modified Portland cement plasters provide unparalleled strength, greater durability, excellent adhesion to the substrate, and preclude the need for "moist curing". Acrylic modifiers offer these distinct benefits:

    • Unequalled bond strength
    • Superior mechanical strength properties
    • Excellent water resistance and abrasion resistance
    • Superior freeze/thaw resistance and proved long-term durability on exterior exposures
    • Unequalled resistance to discoloration. Good chemical resistance



  • What is the "R Value" of Stucco?

  • For a non-insulated stucco assembly it is an R=0.15.


  • What is the intention of Control Joints?

  • Control Joints are intended to create artificial planes of weakness where stresses in the plaster membrane can dissipate without forming their own cracks, breaks, or fissures.


  • What are the criteria for selecting a quality 'Lathing and Plastering' Contractor?

    • Is the contractor a member of a professional association, which sets standards and is recognized in the construction community
    • Is the contractor bonded?
    • Will the contractor provide a list of previous jobs similar to the one you are planning?
    • Can the contractor meet the financial terms and time schedule involved?
    • Is the contractor a 'Preferred Installer' for BOLDStone?



  • What maintenance do wall systems require?

  • Periodic cleaning is suggested. Sealants should be reviewed every year or so. All cladding systems, including brick and vinyl, require some maintenance.


  • When should I maintain the system?

  • Take a visual inspection every six months, when you are doing your Spring and Fall cleanup. Look to verify that sealants and flashing are functioning properly. Look for cracks, bulges, stains, gouges, penetrations, vandalism, etc. Repair any damage or deficiencies.


  • How do I paint my wall system?

  • You should never have to paint our textured finishes. However, for situations where you might wish to change the color of the building, or paint the building for some other reason, use a quality high-grade 100% acrylic exterior grade paint.


  • How do I get graffiti off my walls?

  • If the surface has already been coated with our BOLDTopcoat that protects the finish from graffiti, then all you have to do is use a mild paint cleaner and low water pressure "300/500 PSI", cool water, and a soft bristle brush. If the BOLDTopcoat has not been applied already then the best way is to refinish the area.


  • Do you have a maintenance and repair manual that I could review?

  • We do offer a 'Maintenance' brochure, listed under the tab 'Literature', that can be downloaded from this website. For more serious repairs, a BOLDStone 'Preferred Installer' should be contacted.


  • How long should the BOLDGranite product last?

  • If properly maintained, the finishes will last a long time. The first BOLDGranite finishes were installed in 1972. Most of these installations are still in service as of this writing.


  • Is it necessary to install sealants?

  • Yes. Sealants are always required around windows, doors, all wall penetrations, and at the juncture of dissimilar materials. This is true for every type of wall cladding. Although sealants are not a part of the BOLDStone system per se, their use in conjunction with the systems is a necessity. Moisture damage caused by failure to properly apply sealants at those points just named is not covered under the BOLDStone warranty.


  • Are there alternatives to sealant joints around my window?

  • No. The sealant joints around the perimeter of your windows, and the sealant around doors, dryer vents, hose bibs, and every other penetration serve a critical function; they help keep your home tight and help in keeping water our of your walls. If the sealant is properly installed as specified by the sealant manufacturer, these can give you many years of protection.


  • How do I find a BOLDStone 'Preferred Installer'?

  • Your local distributor for BOLDStone products can give you the names of local companies who are 'Preferred Installers'. The contractor on any BOLDStone job should be able to show you a current 'Preferred Installer' Certificate.


  • Can the BOLDStone finishes be tinted at your distributor's office?

  • The BOLDGranite, BOLDFinestone and BOLDPebble products cannot be tinted. They come from us pre-tinted in 9 different colors. However, BOLDStucco can either come from us in 16 pre-tinted colors or untinted. BOLDStucco's tintable bases are manufactured in a 'Light Base' or a 'Dark Base' formula. All BOLDStone Distributors utilize a color system program that allows them to provide faster delivery and custom coloring of finishes.


  • Does BOLDStone train Installers?

  • Our training classes are open for all installers using our products. All the installers have to do is to contact their distributor and ask when the next training class is scheduled or check our web site at www.BOLDstone.com, click on the 'Technical Support' tab and view the different dates under the 'Training & Seminars' button.


  • I am in a new home that has BOLDStone finished walls. There are spots of finish on my windows. How can I remove them?

  • Several manufacturers make products that work well, such as Demand Products 1-800-325-7540 or Wind-Lock Corp. 1-800-872-5625.


  • What are some potential benefits of applying BOLDPrimer over the 'Brown' coat prior to the BOLDStone Finishes?

  • The BOLDPrimer helps reduce the chance of efflorescence and other possible contaminates the brown coat from appearing on the finish coat. You might also notice a richer look to the finish color since a tinted primer will mask the typically gray brown coat.


  • When applying EPS insulation board, why shouldn't large gaps in abutting EPS boards be filled with a BOLDStone texture coat in lieu of EPS slivers?

  • Because the build up of a BOLDStone texture coat in the gap creates a large solid mass which can result in cracking of the finished surface after it shrinks.


  • Why would cold joints appear in the finish coat and how can this be minimized?

  • Cold joints can occur if the finish in one area is allowed to dry prior to the finish application at an adjacent area. It can be avoided by continually maintaining a 'wet edge' during the finishing application and working to natural wall breaks such as joints, corners, etc.


  • Why might a finished wall appear as different colors when the material all came from the same batch of finish coat?

  • This can occur due to a number of reasons such as shadows, different texturing techniques, differential drying, variations in air pressures if the application is done with a sprayer, addition of unequal amounts of water to each pail, etc.


  • In locations where horizontal and vertical trim accessories (control joints, etc.) intersect, is it preferable that the horizontal trim adjoin the vertical trim or should the vertical trim adjoin the horizontal piece?

  • To allow for a continuous flow of water, it is preferable for the vertical trim to be continuous which means the horizontal trim should adjoin the vertical piece.


  • Should adjoining pieces of trim accessories, such as control joints, etc. used in stucco be butted tight together?

  • Adjacent or adjoining trim accessories should be gapped per the manufacturer's instructions (typically 1/8 to 3/16") to allow for expansion and contraction of the trim. The trim intersections should also be set in a bead of an approved sealant to minimize potential water entry.


  • How long should the 'Brown' coat cure prior to the application of the finish texture coat?

  • The brown coat must dry completely before applying the finish coat. We do recommend using our BOLDPrimer products before applying the texture coat. When to apply both the BOLDPrimer and the texture coat depends on the humidity and temperature. If you are unsure how dry the brown coat is, it is best to wait a minimum of 6 days cure prior to the application of the finish.


  • What are some of the basic differences between expansion and control joints?

  • Expansion joints are used at areas such as building expansion joints, prefabricated panel joints, substrate changes, plane changes, and other areas where structural movement is anticipated. Expansion joints are typically fabricated using sealant joints or in some case metal/prefabricated accessories. Control joints are typically located every 144 sq ft of wall surface area, at maximum uncontrolled lengths of 6.5 lineal meters (18 lineal feet) and maximum uncontrolled length to width ratios of 2 1/2: 1. Control joints are typically fabricated from metal or plastic trim accessories and are available through numerous manufacturers. Their primary purpose is to control cracking which can occur during curing of Portland Cement Plaster.




BOLDStone | (800) 230-5345 | 4261 Sunset Lane, Shingle Springs, CA 95682