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Discussion Starter #1

  • Ok I will give info on my current set up and see what you think in terms of BW and which shade/formula:

    Room 12'x 20'
    walls painted dark brown, ceiling white (vaulted)

    Projector about 13' from screen about 8' from floor (height)

    Seating 20' (one row sofa height not elevated)

    Room has 4 windows (one is covered up by pull down screen) window on right and left of screen about 4' back from screen and window "facing" screen 20' from screen. No window treatments currently but am adding lined blinds.

    100% movie watching on blue ray dvd 80% night viewing with no lights on...20% during day.

    88" diagonal pull down screen "dalite high power"

    projector Panasonic pt-ax200u

    The screen I have is from another projector/room set up and I want to change it as the viewing angles do not work well for the high power scree. I was wondering about using a BW formula and painting on the existing screen:dumbcrazy:....any one try this? Any recommendations on BW formula?

    Thanks for the help

    New
 

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Hi Kent,

Welcome to the Shack!

With your PJ and screen size, you have more than enough brightness to use BW. The problem is two-fold; BW was formulated using standard interior house paint as the main base and such paint wasn't designed to be as flexible as will probably be needed for use on a roll-up screen. A roll-up screen has been made by another user with exterior paint as the base, but there are enough fungicides and mildewcides in the exterior paint that we hesitate recommending it for interior use. The other potential problem in painting a High Power screen is texture. Wbassett and Mech have samples of the HP material and can answer this question, but Mech is away from the forum for awhile and Wbassett is just plain busy so it may be a little while before he reads this. Screen mixes like BW tend to show any texture in the painted surface, and especially any texture difference in the substrate. The HP screen has millions of glass beads on the surface, these may be so small they won't be a significant source of texture, but I simply don't know.

An official version of BW designed for roll-up screens in on the drawing board, but it hasn't been formulated yet.
 

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Discussion Starter #3
The high power screen is actually very smooth...it is not like the typical beaded surface that is bumpy
"A technological breakthrough, providing the reflectivity and optical characteristics of a traditional glass beaded surface with the ability to clean the surface when necessary. Its smooth textured surface provides the highest gain of all front projection screen surfaces with no resolution loss"

Which formulation would you recommend and is there a discussion on going about a mixture for a roll up screen? I would be happy to act as a tester of sorts.
 

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Thanks for the info on the HP screen texture. I thought it might be smooth enough to paint, but wasn't sure.

My opinion would be to use the regular Black Widow mix, the problem is how to make it "rollable".

Due to a number is issues, the two largest being cold weather and health issues, mix testing is currently at a minimal level. The "rollable" BW mix is still in the theory stage. It could be something as simple as adding the correct amount of flexible medium to the standard BW latex enamel mix, or it could involve having to totally change the base paint used.

How would you be painting your HP screen, by rolling or spraying?
 

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Discussion Starter #5
I can roll or spray it...I can always rent a sprayer from home depot or something similar. I thought I would have to spray it as I could hang (with screen pulled down).it in the garage or basement tape off and spray it:yikes: (my 4 year old daugter is helping with my post and she wants a smile....). Not sure if rolling would be very easy on the screen

Do you think regular paint would simply crack when rolled up with screen?
 

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While I have never painted a roll-up screen, my understanding is that interior latex paints will crack. A user on another forum painted his roll-up screen with a BW mixture that used Behr #4850 exterior enamel as the base paint, but as I said, I just can't quite bring myself to recommend that. The argument is that there are many other items in normal everyday use that pose greater health risks than dried exterior paint, and this may well be true, but I think there are better ways of making paint flexible. Even though the exterior paint seems to be working for this user, I'm sure the designers of the paint never intended it to be bent at such angles or bent on a regular basis as would occur with a roll-up screen.

I would think that spraying would be the way to go. Be sure to buy/rent a HVLP (High Volume Low Pressure) sprayer. These come in several configurations, the two most used are the Wagner Control Spray electric spray gun, and the other is HVLP guns that need an air compressor to use. Either type will get the job done. If you must buy one, the Wagner CS is by far the lest expensive, sometimes selling for $49 at Home Depot.
 

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Discussion Starter #7
I did find some one on another home theater blog that had in fact painted a pull down screen with some type of version of BW. I am less concerned with VOC's from exterior paint as I am about not getting the result I should (i'm sure my hardwood floors poly has worst stuff than exterior paint) by changing the paint. I may buy a cheap roller shade and paint to see what happens..........
 

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I may buy a cheap roller shade and paint to see what happens..........
That would be a very good idea. If anything did go wrong with the painted HP screen to cause an uneven texture (like paint flaking off) I don't know any way to fix it.

The other thing is that I have no idea if the HP screen may be coated with something to make dust/dirt not stick to it or somesuch. Point being, I don't know how well it would take paint. The real fly in the ointment is rolling the screen up and down - that would be where the problem would be. Paint adhesion, not just paint flexibility.

I'll try to do some testing over the weekend on a possible flexible BW mix.
 

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Discussion Starter #9
look forward to the info...the other info I got was using valspar duramax (as this is more flexible) but I want to make sure I still wind up with a "true" BW and I understand the base paint is very important.

If this is not possible is there any pull down made that is visually similiar to bw? one of the gray screens?
 

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I read about a positive review of the silver matte from dalite which is an option as a roll up screen...by mech...but then I read about a member who bought the screen and had lots of image issues. Has any one else used this screen (as a home theater screen) or have seen or read a review about it? If I am unable to do the BW then I want to buy a new "silver type screen" at a reasonable price.
 

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I read about a positive review of the silver matte from dalite which is an option as a roll up screen...by mech...but then I read about a member who bought the screen and had lots of image issues. Has any one else used this screen (as a home theater screen) or have seen or read a review about it? If I am unable to do the BW then I want to buy a new "silver type screen" at a reasonable price.
Mr Dodds had trouble with everything he tried, not just Silver Matte. :dunno: You can call or email Da-Lite and they will send you samples. If you find something you really like you could ask them for a larger sample. :T

mech
 

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Discussion Starter #12
Just to close this out I went with high contrast grey dragonfly tab tensioned electric screen. This was my choice due to a great opportunity to pick up very cheap. Overall I would say I like the screen and the grey as opposed to my old material for my current set up.

Then again I'm not a home theater specialist....
 
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