Canvas on Walls
From PROCEED SYSTEM Wiki
The Proceed line of decorative materials was specifically formulated to be applied as "architectural coatings", meaning, they were designed to adhere to walls and furniture.
Golden realizes that decorative painters will apply textures to canvas as a "mural ground", paint the mural and then, at some later date the murals will be applied directly to walls using the marouflage technique. The mural could stay rolled in storage, for example, anywhere between 2 days after the painting has been completed to two years or longer.
Keeping this application in mind, we conducted a one year study of most of the Proceed Textures applied in two thicknesses onto Roc-lon® canvas prepared with 2 coats of Black Gesso.
Proceed Textures Cracking on Canvas Experiment Description:
The Proceed Textures: Metallic Texture, Rough Irregular Texture, Rough Regular Texture, Smooth Transparent Glazing Gel, Smooth Translucent Texture and Smooth Absorbent Texture were applied in thin 10 mil drawdowns as well as in thicker smears across a piece of Roc-lon® canvas prepared with 2 coats of Black Gesso. There were 4 drawdowns and 4 smears created for each texture tested. (Note: Transparent Cracking Glaze, Smooth Light-Bodied, Rough Glass Bead, Smooth Cracking, and Rough Cracking Textures were not tested.)
30 days after application one drawdown and one smear of each texture was gently rolled over diameters measuring 12 inches, 6 inches, 3.5 inches, and 1 inch. Each sample was then folded 180 degrees, softly, and then tightly creased. This entire process was repeated again at 3 months, 7 months and at 1 year.
The results are listed below in order of flexibility: the most flexible (exhibiting the least amount of cracking) to the least flexible:
Smooth Transparent Glazing Gel
The Smooth Transparent Glazing Gel showed no cracking in any of the samples over the entire period of the year long testing.
Smooth Translucent Texture
The Smooth Translucent Texture showed no cracking on either the drawdown or the smear at one month. At 3 months both the drawdown and smear showed cracking when folded 180 degrees softly. The drawdown at 7 months showed no visible cracking and the smear only exhibited cracking when creased tightly at 180 degrees. At one year the drawdown cracked when softly folded 180 degrees and the smear cracked in a thin area when rolled over a 1 inch diameter and cracked in a thick area when rolled over a 3.5 inch diameter.
In looking at the Metallic Texture we witnessed cracking at 1 month when both samples were slowly folded 180 degrees and creased. At 3 months, 7 months and 1 year we saw small cracks when the 10 mil drawdowns were folded 180 degrees. The smears of Metallic Texture had no change in cracking results in the subsequent checks.
Smooth Absorbent Texture
The Smooth Absorbent Texture drawdown cracked when it was softly folded at 180 degrees and the smear cracked when it was rolled over a 1 inch diameter after one month of drying. When it had aged 3 months the drawdown cracked again when folded softly at 180 degrees and the smear cracked when rolled over 3.5 inch diameter. At 7 months we saw similar results to the one month results, with the drawdown cracking when softly folded 180 degrees and the smear cracking when rolled over a 1 inch diameter. At one year we saw the drawdown again, crack when softly folded 180 degrees and the smear stressed when rolled over a 6 inch diameter and cracked when rolled over 3.5 inch diameter.
Rough Irregular Texture
The Rough Irregular Texture drawdown cracked when creased tight at one month and at 3 months, 7 months and 1 year cracked when folded at 180 degrees softly. The smears of Rough Irregular cracked after being rolled over a 1 inch diameter at 1 month and at 7 months and cracked when rolled over a 3 inch diameter at 3 months and 1 year.
Rough Regular Texture
The Rough Regular Texture drawdowns cracked when rolled over a 1 inch diameter and along a straight edge when rolled over a 6 inch diameter at 1 month. At 3 months the drawdown cracked when rolled over a 3.5 inch diameter, at 7 months it cracked when rolled over a 1 inch diameter and at 1 year it cracked when rolled over a 6 inch diameter. The smear cracked when rolled over a 12 inch diameter after a one month drying period, after 3 months the smear cracked at the thickest point when rolled over a 6 inch diameter and at the thinnest application cracked when rolled over a 12 inch diameter. At 7 months the smear cracked when rolled over 3.5 inch diameter and at 1 year it cracked when rolled over a 12 inch diameter.
In these cracking tests of the Proceed® textures, we can deduce a few conclusions based on the yearlong results of these tests. The first is that thin applications show greater flexibility than thicker films. This is evident throughout this entire test. The other conclusion is based on an assumption, the samples were applied in December and were tested in January, March, July and again in the following December. There is an increasing of hardness/cracking of most of the films aged except in the samples tested in July. This leads us to believe that in warmer temperatures we see increased flexibility.
Only roll Smooth Transparent Glazing Gel, Smooth Translucent Texture, Smooth Absorbent Texture, Metallic Texture and in some cases Rough Irregular Texture on a diameter greater than 6 inches and only in thin films (approximately 10 mil which is the Relative Thickness of premium glossy photo paper). When rolling canvas, roll the side with applied product on the outside and roll onto a rigid tube with polyethylene plastic to protect the work and avoid the canvas sticking to itself.
In terms of flexibility, the Smooth Transparent Glazing Gel showed no cracking from one month applications up to year-old applications regardless of the thickness of the film. This leads us to believe that this film could be rolled and even folded (if necessary but not encouraged). The Smooth Translucent Texture was the second most flexible of the textures showing greater flexibility in thin films and progressive hardening of thicker films with age. The Metallic Texture in terms of flexibility was very consistent and showed very little to no change in flexibility as the films aged in either thin or thick applications. The Smooth Absorbent Texture showed no change in flexibility as the film aged and showed a progressive hardening in thicker films. The Rough Irregular Texture and Rough Regular Texture showed little flexibility in thick films and showed slight increased hardness in aged films. The thinner films of both these textures showed the least flexibility of all the textures and really should not be rolled tighter than a 6 inch diameter.
What to Avoid
Avoid any folding of the textures as we have seen cracking in almost all cases except with Smooth Transparent Glazing Gel.