Quest

If exterior latex is what you are talking about, I'm using CIL (in HK or UK it's "ICI"). My doors have been prepped and re-painted 3+ yrs ago, still holding up fine.

Problem typically lies in the "prepping" part, for if it's not prepped right, paint will not stick/adhere properly, and will eventually peel off.

I wouldn't be surprised if the high-end, 2-in-1 exterior latex paint such as CIL diamond, Behr, etc. would work just as well (and stays put) for as long as possible.

I know most painters use Ben moore or sherwin williams but frankly, I think they are all more or less the same.

The only difference is the prep work. The more you prep (sand it down, chemically edging (roughening the old paint coating), the stronger/better the new paint adhesion.

I have painted (cover-over) old paint in my house's exterior for more than 3+yrs now (just regular CIL exterior 2in1 paint), no issues at all.

Q.

Quest

Oh and for washdown(prepping): use TSP (trisodium phosphate) and then rinse clean with water.

It helps to remove grease.

Q.

Quest

@OP: no need to rush over and get the brand, for I strongly suspect that your problem lies on the prepping part (mainly).

My recommendation as follows:

(1) Dulux Diamond exterior (CIL), avail from CIL Dulux paint stores (theres one in Rmd).

(2)Behr Marquee exterior paint

(3)Valspar Duramax or Ultra exterior latex

http://www.eurocoloursolutions.c ... ici-exterior-paints

Q.

Quest

is your garage door wooden panel type or metal type (clopay)?

Q.

p.s. if it's wooden, it's best to either use a heat gun and use a delicate/detailed contour paint scraper, like this:

http://www.hardwarestore.com/contour-scraper-kit-646946.aspx

alternatively, you can use chemical stripper also but make sure (a) you get lots of air/ventilation, and (b) get extra for it will dry out far sooner than you paint starts to peel.

Once you finished with chemical stripper, wipe it down with a damp rag to raise the wood fibre pores. Then sand it (or whatever you like to achieve smooth consistent finish). Finish it with 220or 280grit wet/dry paper, and then wipe it down with a tag rag.

Then, use those 2-in-1 (primer in 1) type of exterior grade latex paint. If you can, use roller to achieve consistent texture and result. Let dry for 6 hrs under high heat/dry weather, then apply 2nd coat.

2 coats and you'll are fine.

BTW: interior latex paint differ from exterior type by means of (a) exterior contains lots of UV inhibitants within; and (b) 100% acrylic latex exterior paint typically comes with elastomers to keep the paint skin "flexible", to handle the extreme weather (thermal expansion).

Quest

Yes, I have great/consistent results from using ICI/CIL paints so far.

I only went for the mid/high grade exterior CIL paint bought from HD, that's the primer in one type.

I'm not a big fan of Behr, with the exception of Behr Marquee. Valspar is quite decent. CIL/ICI used to be independent until Akso Nobel came along and bought them, and was later (about 1 yr ago) bought out by PPG.

latex paint adhesion is all about prep work. The more careful you work through the prepping (exp. repainting over old stuff), the better it will adhere and stay on.

Also: it's best to check and see if your previous layer of paint is oil based paint or latex paint before you proceed to re-coating:

http://www.seattlepi.com/news/ar ... aint-is-1218114.php

Q.

Quest

I've gone online and looked, and seems like Duration betters Emerald (because it's specifically for exterior use only).

Both Superpaint and resilience are good also (on paper it seems).

I personally do not care about fungicide unless your garage door (or application specific) faces a lot of rain, etc.

Once again: It's all about preparation work. The more  time you spent prepping the work (making sure it's grease free. I sometimes wipe down the panel with 97% alcohol wetted rag in addition to washing down first with TSP) before proceeding to doing a primer-in-one paint coat (re-apply 2nd or 3rd coats to obtain maximum coating protection).

Note* I'm not familiar with sherwin williams latex paint so I can only provide my 2cent's worth based on what they said on paper (on their site).

Good luck.

Q.