Optimum Sheen for Painted wall screen - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 5 Old 08-13-2019, 05:28 PM - Thread Starter
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Optimum Sheen for Painted wall screen

Hello Everybody

I am going to paint a wall to be used as my projector screen. My room is very light controlled and my walls are all dark grey. The projector I am using is an Epson 2100, projecting a 110” image from about 14ft.
It appears to me a white screen would be best suited for these conditions.

Regarding the title, I read that there was a paint by sherwin williams that used to be very good but later on became too glossy/shiny.

My question is can I mix the flat version with the sating version in specific ratios to achieve a sheen that would give me better vibrance than flat paint, but less or no hot-spotting like the semi-gloss?. Basically I am trying to reproduce the previous formula.

Thank you
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post #2 of 5 Old 08-14-2019, 01:24 AM
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I would not bother to do so.



The SW paint was never "all that" and it only took a short while for that to become apparent. And all that happened before any changes to said paint were made. It was a poorly conceived premise from the start, and the lack of any real positive vetting by end users pretty much confirmed that premise. The original version still suggested the use of a Satin (wrong from the start) and did not stress that such should be sprayed. Basically it was a attempt to offer something similar to a StudioTek 130 that was misguided from the start.



Actually you would be best suited to use a specific paint solution already known to have both the correct sheen and at least some degree of contrast boosting ability.


PPG Diamond Base 2 in a Flat or Matte tinted to Universal Grey is a simple solution. Advanced higher performance options such as Silver Fire v2.5 N/C would be an optimal choice.



The Epson 2100 can certainly use some help with it's Blacks, and even a room being totally light controlled cannot offer the image on-screen any additional help at all....just simply promise not to detract from what is put up.

"They said it couldn't be done. Well, we sure showed 'em otherwise!"
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post #3 of 5 Old 08-14-2019, 05:59 AM
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Quote:
Originally Posted by Fahad1996 View Post
Hello Everybody

I am going to paint a wall to be used as my projector screen. My room is very light controlled and my walls are all dark grey. The projector I am using is an Epson 2100, projecting a 110” image from about 14ft.
It appears to me a white screen would be best suited for these conditions.

Regarding the title, I read that there was a paint by sherwin williams that used to be very good but later on became too glossy/shiny.

My question is can I mix the flat version with the sating version in specific ratios to achieve a sheen that would give me better vibrance than flat paint, but less or no hot-spotting like the semi-gloss?. Basically I am trying to reproduce the previous formula.

Thank you
The method I use and have had great luck with in doing slight adjustments to a paints sheen level is to add a clear water based poly to a flat latex paint of the color I desire. A added benefit of the poly is it also acts as a flowing agent and smoothes the paint surface and retards drying time producing a better screen surface in terms of variance.

I started a thread many years ago about doing this and all my screen for the last 16 years have been made this way. It is very simple to do and does require some experimentation to nail the correct blend to suit your room perfectly.

Bud
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post #4 of 5 Old 08-14-2019, 07:43 AM
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Unless one uses a Polyurethane that has a degree of sheen higher than a Flat, the only thing accomplished is the thinning of the overall density / opaque qualities of a given paint. Earlier BB (Before Bud) formulas did employ Satin Polyurethane added to Flat Paint, primarily in the quest to increase gain....but if enough such was added to make a difference, then all too often hot spotting...or at least warm spotting and blooming resulted.



So a decided effort was made by a very few of us to balance out the overall attributes and negatives involved with employing any degree of sheen, and the end results was and remains the same.



Any surface Sheen beyond a Matte is universally bad.



No further experiments are required....the knowledge and experience to accomplish exactly what you want / need is readily available for the searching or by asking direct questions.

"They said it couldn't be done. Well, we sure showed 'em otherwise!"
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post #5 of 5 Old 08-15-2019, 08:42 AM - Thread Starter
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PPG Diamond Base 2 in a Flat or Matte tinted to Universal Grey is a simple solution. Advanced higher performance options such as Silver Fire v2.5 N/C would be an optimal choice.
The Epson 2100 can certainly use some help with it's Blacks, and even a room being totally light controlled cannot offer the image on-screen any additional help at all....just simply promise not to detract from what is put up.

Thanks for your taking time to read and reply.

I have considered Silver fire but the materials and equipment required may not be available where I am from (Kuwait). This is what is available to me
Paints; Jotun or SW.
Metallics: Folkart Sterling silver and pearl white
Polyurethane: not available as water-based
Paint Spray: Sagola 0.8mm HVLP Gun + Air Compressor

Can I paint a silver fire screen with these items? If poly is a must and has no alternative, I might consider ordering it from abroad.


Yeah the projector definitely doesn't have very good blacks. Except when I projected a 30” screen on my dark grey walls lol. It made wonder though, which would have better blacks, a 1000 lumen projector on a 1 Gain white screen, or a 4000 lumen projector on a 0.25 Gain dark grey screen? Assuming CR is constant.

Thank you
Fahad
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