Thermally Modified Ash
Dimensionally stable, sustainable, highly
durable, and ideal for outdoor use.
The Weathering of Wood —
A Natural Process
Weathering is the general term used to
describe the physical change materials exhibit
with exposure to the outside elements..
Materials may encounter moisture, sunlight,
heat/cold, chemicals, abrasion, etc.—all factors
in the natural weathering process. The natural
wood options that Landscape Forms offers
will maintain their structural integrity and resist
rotting for many years without any kind of
treatment. They will, however, exhibit signs
of natural weathering, which include graying,
checking and tannin leaching (Jarrah only):
Unfinished wood will weather to a natural gray patina.
During the initial drying process the outside of the wood dries quicker than the interior, which causes differential stresses to develop. The combined effect of these drying stresses in wood often results in the formation of a check or a split. These seasoning characteristics are not problematic; it is important to remember that as wood dries, it becomes stronger. The development of these seasoning characteristics is quite normal.
Tannin Leaching (Jarrah only)
Tannins are natural organic compounds present in certain timbers; leaching of tannins can cause discoloration on surrounding materials. Tannin leaching commonly occurs when certain timber are exposed to rain or other sources of water (e.g. sprinklers.) This leaching process only occurs for a short period of time while the wood naturally weathers in its outdoor environment. (Tannin bleed is unlikely in thermally modified woods as the tannins are naturally removed during the thermal modification process.)
Natural Graying of Wood
Domestically Sourced Thermally Modified Ash
Finishes Not Recommended
Finishes applied in an attempt to maintain the new color of wood are not recommended. No wood finish is weather-proof; most finishes are weather resistant for a period of time but require ongoing maintenance. Finishes like exterior varnish or polyurethane will break down in the outdoor elements. The addition of UV inhibitors will delay the deterioration of the finish but will not stop this deterioration completely. Seasonal expansion and contraction will rupture the finish and expose the wood beneath creating an unattractive surface condition.
Other materials used to finish outdoor woods such as wood penetrating oils will penetrate the wood and highlight the grain and natural color of wood. However, these oils will not harden; the solvents will evaporate leaving the wood to weather with oil residue in the pores. With annual maintenance this may be acceptable for decking, however, this is not a recommended treatment for site furniture where oils and attracted dusts may rub off and stain clothing.
Palette de concepteur : série Architectural
L'esthétique sophistiquée des façades architecturales modernes a inspiré notre série Architectural. Les couleurs muscade, onyx, obsidienne, noir, crépuscule et frêne bleu au fini peu lustré anti-reflet offrent aux concepteurs une palette esthétique originale pour nos mobiliers et éclairages. La palette est réalisée à l’aide du procédé exclusif Pangard II® de Landscape Forms, sans plomb, sans composés organiques volatiles et sans polluants atmosphériques dangereux, avec thermolaquage polyester sans plomb.