DIY Granddad (w/help)
Join Date: Nov 2002
Location: Byhalia, Mississippi. Waaaay down in the Bottoms
Mentioned: 59 Post(s)
Tagged: 5 Thread(s)
Quoted: 1633 Post(s)
The technique isn't difficult to master....it is something done fairly quickly, so a little practice at maintaining speed, distance, and correct row overlapping and your there. The actual spraying of an individual coat takes on average about 1 minute at 120" diagonal....or slightly less when the screen is 110"'
Creating a spray Booth requires some 9' x 12' x 0.7 & 2 mil Plastic sheeting, Thumbtacks and Blue Tape. Also there exists Pre-taped rolls of 48" wide Plastic which are great for masking off the perimeters of the actual screen area to be painted.
I start by taping off the perimeter of the screen area, plus 1" using 2" wide Blue Tape. Then using the Pre-taped Plastic, I attach it across the top of the Screen area, 1" out from the inside edge of the Blue tape, and with each end going our at least 2' Starting at that +2' location, you secure that end with a Thumbtack, then apply the tape until you reach the other end, and attach another Tack. One thing...be careful not to pin the folded plastic under the pre-applied Tape as it makes it difficult to pull loose when the time comes to unfold it.
That time has come. On most installations the top of the screen will be well within 3'. unfolding the plastic down over the screen, until completely unfolded, you start at the center and getting between the Plastic and the wall, slide the plastic up the wall until you reach the Wall / Ceiling junction, and place a Tack at the top edge of the Wall. Continue out each direction using a Tack every 2' or so, taking care to keep the plastic straight in regards to the original tape line. The Plastic will fold over the pre-taped edge...so don't pull to tight lest you pull that tape loose.
Once you have stretched it out, you can do likewise again, from the center outward, and attach the leading edge to the Ceiling,...with occasional tacks inside and across the plastic to hold the center areas of the plastic against Ceiling.
Going back to the original taped edge, put Blue tape Over that edge and onto the 1" of remaining exposed Blue Tape. This assures a good sealed attachment.
This first step is the most involved. After that, it becomes a simple matter of outlining the sides / bottom of the screen with the Pre-Taped Plastic, and then overlapping that plactic with the 2 mil sheets and using Tacks to hold that plastic to the walls / ceiling. I let the 12" long length drape down from the Ceiling, forming the walls of my tent6, and I make the tented area at least 6' to 8' deep, and I place 2 mil sheets on the Floor within the tent. Overlapping drapes in the Rear center allows access without dust leakage.
This procedure works great if one has to work within a small area full of furnishings that can simply be moved out to the edges.
Using the 0.7 mil x 9' x 12' sheets you can drape over any remaining areas of Furniture outside the Tent walls if the Wife / SO still has worries.
Use more Blue Tape to seal any overlapping plastic sheets. Consider the change in Air pressure within the tent when the Spraying is going on, and overlap the Plastic do that pressure pushed the inside sheets against the overlapped outside sheets. This applies to the Ceiling to Floor drapes as well. Underlap them under the Plastic applied to the ceiling of the Tent, push tacks through both pieces, and seal the two pieces of Plastic with Tape.
Tacks allow the Plastic to be held firm against a surface. It does not take too many, and they leave unnoticeable holes. If Tape was solely used there would be a much grater risk of pulling off paint along the long lengths of taped areas.
This detailed description might seem it all to be more complicated and more work than it really is. It's not.
It so happens I must today make a tent to repair some existing defects in a recently painted screen, defects that popped into existence after the screen was painted. That can happen....the high contrast paint can make otherwise invisible scratches and pits become visible, and when someone else besides yourself will be closely examining the screen, when it is off (...these defects cannot be seen under projected light...)then the surface simply has to be every bit as perfect...or more so than a Mfg Screen counterpart.
So I will take some pictures.
Meanwhile go to my Profile, pull up "Threads by..." and visit the many threads that involve screen painting to get a overview of the spray technique, and paint assembly. Questions afterward I can address.