NATURAL HISTORIC MORTARS
In Historic Restoration work, using "like for like" materials is really a guiding principle, that can help to make sure the compatibility of recent repair, repointing and rebuilding materials using the old, and preserves the building's historic integrity. The restoration from the Pemaquid Point Lighthouse in Maine (photo, left) exemplifies this ideal new Natural Cement mortar was utilized for selective repointing, supplying a precise match towards the original early 1800s materials.
Edison Coatings, Corporation. may be the only United States source for all those available major historic binders:
Lime Putty. Hydrated Lime. Natural Hydraulic Lime. Natural Cement. Roman Cement and Portland Cement/Lime .We routinely prepare custom, authentic historic mortars for a multitude of applications of any size and also gives pure, natural historic binders for on-site matching by skilled tradespeople.
We are able to work out of your existing specifications, mortar analysis or recipe or we are able to evaluate and suit your mortar from provided samples. Our custom mortars typically include both custom blended aggregates to complement original size, color, shape and composition as carefully as you possibly can, and in the past accurate binders to complement original composition and gratifaction.
WHERE Would You BEGIN?
Edison Coatings provided natural cement-based injection grouts and custom color-matched repointing mortars to satisfy National Park Service specifications for that restoration from the Washington Monument in 2013.
We provide an entire product range and services, including:
Color, Binder Aggregate
Matching
Mix Design Recommendations Corrections
Mockup Material Production
The Mortar Selection Decision Tree- For many projects, the starting point is by using a preciseresearch into the original materials . Probably the most helpful analyses will employ Thin-Section Microscopy and Chemical Analysis (ASTM C1324). Microscopy can be used to recognize mortar components and chemical analysis quantifies their proportions and separates the sand so it may be matched.
- Assess the original mortar. Made it happen succeed?
If that's the case, replication could be the ultimate way. Exist fundamental flaws (e.g. oversanded, undersanded, poorly graded, over-pigmented) that needs to be remedied? If simple corrections will permit the employment of what's otherwise an almost-replication mortar, this really is frequently a great way. - Would be the original materials available?
In the past, a multitude of mortar-making materials were utilised. A number of these, or their modern near-equivalents, continue to be currently available. Many are not. If they're available, it is almost always better for their services, instead of substitute materials. If they're not, a performance-based analog ought to be formulated. - Will the initial materials succeed as restoration
materials?
Conditions change with time, and materials that labored well inside a new construction setting might not succeed inside a restoration setting. Lime mortars, for instance, labored well in foundations constructed from new stone or brick. But after 100 years of groundwater exposure, the salts absorbed through the masonry can prevent lime mortars from correctly connecting. When the original materials will work well, rely on them. Otherwise, a performance-based analog could be formulated. - Need Assistance? Give Us A Call! We've the understanding,
authentic materials and experience to create any project successful!
1-800-341-6621