There are a number of things to keep in mind when putting together an Old Building Preservation Plan. This article deals with Barrier Coating
Evaluate potential barrier coatings for potential damage to old-growth trees and vegetation in the area.
Water-repellent sealers are more applicable to soft, incompletely fired brick from the 18th-and early-19th centuries to protect it from further deterioration or dissolution.
Conventional anti-graffiti or barrier coatings are not water repellent and have a shiny appearance that can greatly alter the appearance of a historic masonry surface
Transparent coatings serve as a barrier between the masonry surface and graffiti, preventing graffiti from penetrating into the masonry.
Traditional clear coating discolor and change over time. Exposure to ultra-violet light can cause a coating to yellow; dirt build-up may darken the treated surface; some coatings may acquire a sheen.
Anti-graffiti or barrier coatings can facilitate the removal of graffiti from porous as well as non-porous surfaces. However, extreme caution must be exercised before applying a transparent barrier coating.
Criteria to Consider Before Selecting a Barrier Coating as the Primary Protective Means of Combating Graffiti
What to look for in a Barrier Coating:
Water-vapor permeable, or "breathable"
"Invisible" without gloss or sheen, when applied to masonry
No change in appearance from uncoated areas when masonry is wet
Does not discolor or attract dirt
Questions to Ask:
Will the coating last long enough to offset its cost?
Will the application and reapplication of the coating be cost effective?
Will the coating be effective against more than one type of graffiti?
Will the coating need to be painted over at any point?
Are coating touch ups difficult? What does "touch-up" entail?
What is the expected service life of the coating?
Will the coating make repointing or patching difficult or even impossible?
Seek advice of an architectural conservator.
Test coating on an inconspicuous area of masonry, or study the success/failure of the coating in other locations where it has been used.
You may benefit from trying out Ionyx advanced coatings technology on a small area to see if it is a good fit for your building. Low VOC Ionyx coatings are translucent, come in a variety of finishes and fomulations for different substrates (metal, stone, concrete, etc.)
Feel free to contact Rugged Coatings for information on how these special formulations of Ionyx nanotechnology coatings can support your preservation efforts. Once applied, these coatings are designed to stand the test of time - just like your historic building - and require no abrasive power washing or harsh chemicals to maintain.
Let Rugged Coatings provide Ionyx and CleanWirx product training and maintenance advice.