I would think that modern Acrylic Latex would be a very good paint with regard to flexibility. If the surface is properly prepared and it is applied properly it should be fine for a number of years. I know that Behr has a 10 + year house paint that is highly recommended over wood siding and trim. That is subject to repeated expansion and contraction with drastic temperature moisture cycles etc.
I was acquainted with a gentleman who was a retired chemist from DuPont and he was very emphatic that the current families of water-based paints were more than adequate for the job whether it be painting your house, or painting a boat. I have very good results with DuPont branded paints on my wooden canoe, I painted the hull that was made out of 6 strips per side of Aircraft grade 5 ply birch. Would think that an airplane would not be much more difficult with regard to environment and exposure etc. Even the automobile industry is moving to low VOC water based paints to paint new cars. I know that these are a bit different than Acrylic Latex but it is a similar technology. Also there is a longer cycle between coats, 15 min for the solvent based paints and 45 + min between coats of the water-based. HTH, Michael On Fri, Sep 13, 2013 at 1:07 PM, smwood <smwood at md.metrocast.net> wrote: > My paint has been on for five years. I selected the acrylic latex house > paint specifically for its flexibility. Have not had any cracking or > pealing except for the one area I had Poly-Fiber Smooth Prime. I sanded > off all that Smooth Prime and started over with bare plywood and > fiberglass. The base is Micro-balloons and resin on the plywood and > fiberglass. Used epoxy resin on the lumber and parts made with epoxy > resin, and vinyl ester resin on the Diehl wing skins. First Primer coat is > on the micro, not plywood or fiber glass. On subsequent coats, you're just > painting paint. Did I mention the oil separator for the air compressor? > I don't know what brand or procedure was used on the Lancair 360 or how > old or weathering involved. My KR-2 lives in a hangar out of the sun and > precipitation. > To paraphrase Larry's disclaimer: Your results may vary. > > > Sid Wood > Tri-gear KR-2 N6242 > Mechanicsville, MD, USA > ------------------------------**------------------------------**---------- > > Water based paint = a big mess... House paint in perticular... >> >> It's not flexible enough to actually adhere without cracking/peeling... >> >> Prior owner of my project used the stuff.... UGH! >> >> On 9/11/2013 7:32 PM, Lee Van Dyke wrote: >> >>> I'm working on I lancair 360 that has water-based paint on the >>> underside. This is the second Lancair that decided to land with the gear >>> up. The problem I see with the water-based paint is the preped surface was >>> too smooth. I would start the first Coat with nothing more that 220 grit. >>> With the final coat nothing more than 400 grit. This planes prep surface >>> was so smooth I was able to pull off big sheets of paint. >>> >>> Lee Van Dyke >>> >>> On Sep 11, 2013, at 11:24 AM, "Sid Wood" <smwood at md.metrocast.net> >>> wrote: >>> >>> I used Acrylic Latex exterior house paint. Lowe's sells it for >>>> $26/gal. I sprayed with a conventional qt. cup gun also from Lowe's using >>>> my 1/3 hp air compressor with inline pressure regulator set for 30 psi and >>>> an oil separator. I used 3 coats primer and 3 coats top coat semi-gloss. >>>> Light hand wet sanding between each primer coat with 400 grit; each top >>>> coat wet hand sanded with 600 grit. Sprayed two coats gloss, no sanding. >>>> Gloss goes on like water, so have to drop the air pressure to 10 psi and >>>> move the gun fast or it will run. Perhaps should have used a smaller jet >>>> for the gun for the gloss coats. For the top color coats I had Lowe's tint >>>> the white paint with more white pigment; that makes the paint noticeably >>>> even whiter. Flag bunting trim is vinyl stick-on decals made by a local >>>> sign shop. The fuselage decals are 10 feet long. Costs were $142 for paint >>>> and related supplies and $168 for the vinyl decals. >>>> >>>> Sid Wood >>>> Tri-gear KR-2 N6242 >>>> Mechanicsville, MD, USA >>>> >>>> >>>> ------------------------------**------------------------------**-- >>>> Robert >>>> What manufacturers water based paint and primer are you using? Satin >>>> or >>>> gloss?? Will there be a top coat of clear, also water born? Are you >>>> using >>>> HVLP spray equipment? >>>> Patrick >>>> >>>> >>>> Hi everyone, >>>> >>>> I was hoping to have my KR for this years gathering, but it's not in in >>>> the >>>> great scheme of things. I am making good progress. It took me some time >>>> to >>>> warm up to waterborne paint but after using the primer I'm convinced >>>> that >>>> it's a great product, and it doesn't have all the nasty smells. >>>> See you at the gathering! >>>> >>>> http://s449.photobucket.com/**user/rkpsk1/library/<http://s449.photobucket.com/user/rkpsk1/library/> >>>> >>>> Robert Pesak >>>> >>>> Hermitage, Tn. >>>> ______________________________**_________________ >>>> >>>> >>>> > > > ______________________________**_________________ > Search the KRnet Archives at > http://tugantek.com/**archmailv2-kr/search<http://tugantek.com/archmailv2-kr/search> > . > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org > please see other KRnet info at http://www.krnet.org/info.html > see > http://list.krnet.org/mailman/**listinfo/krnet_list.krnet.org<http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org>to > change options >
