LIMESTRONG STOCKING SUPPLIERS
LimeStrong’s Artisan products are also stocked and sold by a select network of specialty suppliers.
KENYON NOBLE LUMBER & HARDWARE
BELGRADE LOCATION: 4949 Jackrabbit Lane, Belgrade, Montana • (406) 388.6400
BOZEMAN LOCATION: 1243 West Oak Street, Bozeman, Montana • (406) 586.2384
LIVINGSTON LOCATION: 122 N. F Street, Livingston, Montana • (406) 222-0761
THE ARCH: Green Building Products
2000 Riverside Drive Unit 10, Asheville, NC • (828) 253.5455
APPLICATION AND USE
Find application instructions, a list of upcoming workshops, and a how-to video library over on the LimeStrong Training page.
SAFE USE. LimeStrong contains hydrated (slaked) lime, which (because of a high pH) is somewhat caustic. Please read the SAFE USE information found on the About LimeStrong page of this site. You can also download the Safe Use information in PDF format as well as the SDS for the LimeStrong plasters (PDF).
Click in for a visit and get inspired by the artistic expression and amazing variety of plaster projects being created with LimeStrong finishes and posted to this project gallery.
These FAQs should be readily intelligible by someone who knows what they’re doing with plaster. If some or any of this does not make sense to you, consider one of our training workshops or choose the “call a professional” route.
Can I get LimeStrong-specific application training? We schedule 2-day workshops throughout the country. We also put on a custom training workshop for groups of five or more. The key is to have an adequate location for the hands-on training. One popular method is to hold the training on a job site. See the training page for more information.
What kind of surface can I put LimeStrong plaster on? LimeStrong is best applied to primed drywall, resulting in a smooth and consistent finish with primed MDF board as an alternative. Plywood, even if primed, is not recommended. A drywall finish level of 3-4 for coarser materials (sand/stone) and 4-5 for marble is most compatible with LimeStrong. If surface has been previously painted, apply a solid coat of primer with Dimension Grit. Scraping or sanding may be required in the case of heavy drywall textures on original surfaces.
Can I apply plaster directly to new drywall? LimeStrong can be applied over any water-based acrylic or PVA primer approved for interior latex paint over drywall. For an easier application and adhesion, it’s highly recommended to use Dimension Grit in primer.
At what stage of construction should plaster be applied? For the best transition between plaster and adjacent materials, it’s recommended that you complete flooring, baseboards, trim and door casing, tile, and paint before lime plaster application. LimeStrong is a high-end finish material intended to be installed as late in the finishing process as possible.
How long can I store mixed LimeStrong? The plaster, once mixed with water, will slowly stiffen and become firm. As a general rule, the mixed plaster will be usable for 7 to 10 days. Within that 7 - 10 day window, remixing may be necessary to return the plaster to an ideal working consistency. The lime + pumice formulation of LimeStrong Artisan creates a mix that is slightly hydraulic. This hydraulic reaction is strongly affected by temperature. Mixed plaster stored in warm or hot conditions will set faster than if stored in cool, above freezing conditions. Store mixed LimeStrong in an airtight container and keep from freezing or extreme heat.
How do I mix LimeStrong plaster? LimeStrong comes in powdered form, to which you add clean water and (optionally) color pigments. Vigorous mixing with an electric drill, rather than by hand, is necessary to ensure a thorough blend of water, plaster, and color. If using powder pigments, to avoid pigment bursting, mix for a minimum of 3 minutes. A more detailed description of mixing LimeStrong plaster is included in the instructions for mixing and applying each grade, found on the Application Guidelines section of the Training page and as PDF documents in the LimeStrong Artisan Library. See our general Plaster Mixing Guide (PDF) for an informative overview of the mixing process.
What are the best tools to use for plaster application? Apply LimeStrong with a traditional hawk and stainless steel trowel. The best finishes are achieved with semi flexible Venetian or Japanese type trowels.
Where can I find calculators for determining the right amount of water or colorant? We've build a set of web-based calculators for figuring water, color pigment (shades and blended), and square footage. You'll find them on the LimeStrong Calculators page.
How do I clean LimeStrong plaster off of other items if things get messy? Allow plaster to dry completely. Using a soft but abrasive dry kitchen scrubber, “sand” off excess plaster. Any residue can be wiped away with a cloth damp in white vinegar.
How many coats of LimeStrong plaster do I need? How thick should they be? LimeStrong plasters are designed to be applied in two coats. All three finishes should be applied at grain height for each coat. Smoother finishes will require a double back coat to achieve a glossy surface. In most cases, the first coat should dry completely (typically over night). For a more economical finish with stone or sand, one coat is sufficient if smoothed slightly with a trowel. See a more detailed description of applying LimeStrong plaster in the Application Guidelines section of the Training page.
Can I apply LimeStrong plaster just by myself? A solo worker can plaster the first coat of a large wall. Maintaining a wet edge on the final coat is crucial and will be more efficient and produce better results with a second skilled worker.
Is LimeStrong plaster a hazardous material? LimeStrong plaster in its wet state is highly alkaline (pH 12.5) and can cause irritation or caustic burns. Use protection to ensure that eyes and skin are protected. If skin is exposed, rinse with COOL water and vinegar or another mild acid immediately to neutralize the lime’s pH. While mixing, take precautions to avoid breathing powders. Please read the complete Safe Use Precautions information on the About LimeStrong page.
Do I need to apply a sealer over LimeStrong plaster? Though not required, the extra step of a sealer (we recommend our LimeStrong Soap Finish) can deepen the aesthetic a LimeStrong finish and increase its stain resistance. Concrete masonry and brick sealers can also be effective. Always test such sealers in an inconspicuous location.
How easy is LimeStrong plaster to repair? Scratches and dings in LimeStrong plaster are easily touched up. For large repairs requiring drywall patches or other substrate damage repair, the wall may need to be recoated.
What kind of substrates can I put plaster over?
• for Sand: New (primed) drywall, previously painted drywall, MDF, cinder block, brick, stucco base coats, plaster base coats and formed concrete.
• for Stone: New (primed) drywall, previously painted drywall, MDF.
• for Marble: Level 5 smooth-finished (primed) drywall.
• for Base: tile mortar/thin-set scratch coat (Tadelakt system), stucco brown coat (exterior), lime plaster scratch and brown coats (exterior), LimeStrong Artisan Sand first coat (over primed drywall), plaster bonder (over finished drywall or previously painted substrate, smooth concrete. Plaster-Weld® is a good choice.
• for Tadelakt: Over a shaping, foundational layer of LimeStrong Base.
• for Limewash: Over a base coat of plaster or rough, unfinished wood, absorbent brick or unpainted cinder block (Absorbent and porous/open bases).
Is LimeStrong available in a coarser grade for construction and restoration applications? LimeStrong is available in two “build” lime plaster grades containing coarser aggregate designed for thicker applications. RUSTICUS is an exterior/interior grade; CLASSICUS is an interior finish grade. Both are sold in palleted supersacks and used for traditional and non-traditional new construction as well as historic plaster renovations and repairs. For more information and to order a sample, visit www.LimeStrongBuild.com