Spray Lines On Smooth Exteriors HELP!!! - Contractor Talk - Professional Construction and Remodeling Forum

Entrepreneur · 04-02-2009, 03:53 PM

Hey over the past 2 years I've had around 50 houses sprayed through my business.

I've noticed that on smooth surfaces such as aluminum siding and even solid wood theres loads of lines visible after the spraying is done...it does not look good.

I've tried everything from using more pressure, less pressure, bigger tip size, smaller tip size, I have a Titan 440.

Everyone I've asked now says it comes down to technique but I don't believe that I remember all my first houses came out smooth as a babies bottom.

Soo....what can I do to minizmize spray lines on exteriors? Thanks!

410tip · 04-02-2009, 05:12 PM

Use a new 515 tip. Flat head or reversible.
Watch your start and stop marks.
Fan out at the beginning and end of your spray sets.
Don't be afraid to put two light coats of paint on each side.
Once you master doing it in two coats, you'll be able to get it to cover in one coat.
Start and stops can be eliminated by fanning out. The heavier you go, the more it'll show.
My 2 cents.

sparehair · 04-03-2009, 12:16 AM

backroll?

sparehair · 04-03-2009, 12:17 AM

spray horizontally instead of vertically (running with the siding)?

Entrepreneur · 04-03-2009, 12:42 AM

back roll does work but a waste of labour...i could try spraying with siding i suppose.

WisePainter · 04-03-2009, 05:40 AM

Overlap 50%.

Kayb2 · 04-03-2009, 08:26 AM

try a new tip

Traditions2 · 04-03-2009, 08:39 AM

I've been spraying a long time and have to agree. Unless it is a true deadflat paint, I don't like the finish with spraying and not backrolling. If it is on lap siding I don't have a problem. But trying to spray an interior new cons or something like that without backrolling. I can't do it to my liking. I spray ceilings with dead flat paint and don't backroll. Everything else gets backrolled.

NAV · 04-03-2009, 02:51 PM

What the heck are you guys telling him to backroll aluminum siding for???

Its a combination of the tip (use a new tip every 2 - 3 houses) pressure (I am a fan of high pressure - just watch the overspray) and the material you are using (if it is too thick you may have problems - try reducing the material by 5% with water).

I had a problem with a case of tips i purchased years ago. they all had manufactures defects and would finger bad. buy a new tip from another store and see if that fixes it.

Traditions2 · 04-03-2009, 02:59 PM

I just re-read the post. I wouldn't backbrush or backroll aluminum siding. I'm talking about spraying out interiors. I always back roll. Same thing with doing an exterior house that is wood or stucco. I like to backroll. It puts the product into the substrate. Aluminum siding though, spray and forget it. I love spraying alum sided houses. quick easy money.

Entrepreneur · 04-03-2009, 04:20 PM

Hey thanks for advice.

I am going to try watering down the paint for sure maybe even put in some floodtrol from Flood.

WisePainter · 04-03-2009, 04:28 PM

Quote:

Originally Posted by Entrepreneur

Hey thanks for advice.

I am going to try watering down the paint for sure maybe even put in some floodtrol from Flood.

world llc · 04-03-2009, 04:31 PM

my old boss used to water down up to 20%
not sure how it held up, but boy it sure looked good driving away!

world llc · 04-03-2009, 04:37 PM

to be helpfull, get a bigger unit. i use my speeflo for most situations where i get tails out of my 640ix
speeflo with a graco gun... i get splatter from my titan gun under high pressure

NAV · 04-03-2009, 05:14 PM

5% water not 50%

Veith@toast.net · 04-03-2009, 07:15 PM

Sounds Like the Biggest problem is tip and low pressure. Ya I agree the pump seam a little small but doable. That And I wonder how much hose he is useing.