Variation in Appearance:
Wood naturally varies in color, texture, and figure. These variations are created by the different layers of wood between the outer portion of the tree that transfers sap and the inner portion that fills with natural deposits. Any manufacturer cannot control this natural growing process. In time, wood will change color as it is subjected to typical ambient conditions. Stains and/or clear topcoats may slow this process but will not stop it.
Subjecting wood products to humidity levels lower than 25% relative humidity will cause the dry air to draw moisture from the wood. This actually causes wood to shrink in the direction of its annual rings, which leads it to warp, cup, and bow.
A door panel made of wood will shrink causing hardware to operate incorrectly. The door panel will not set properly against weather stripping, causing an Ashworth Door to leak. The gap between door panel and frame will also increase to an amount where light could be seen between the door and frame or between two door panels.
Subjecting wood products to humidity levels higher than 55% relative humidity will cause the wood to draw the excess moisture from the air. This actually causes the wood to swell. A door panel made of wood will swell, not allowing them to close properly by binding with the frame in which they are hung.
Sudden Change in Humidity:
Any wood product subjected to sudden changes in humidity will either absorb or release moisture at a rate that will cause the wood to react with an extreme characteristic of either low or high humidity.
Sunlight accelerates the bleaching and oxidation process in wood. Stains and/or clear topcoats may slow this process but will not stop it. Dark stains are not recommended on any wood product. Dark stains absorb harmful UV rays, which will cause any wood product to lose its optimal moisture content and react with the extreme characteristics of low humidity.
On veneered components, the veneer will be subjected to the harmful UV rays while the substrate will not. This will cause the veneer to lose its optimal moisture content while the substrate will not. The veneer will begin to check, blister, and delaminate.
Following Ashworth’s storage, maintenance, and finishing Instructions will greatly reduce the effects of humidity and sunlight.