Does having a coat of primer actually matter that much? Or is it a conspiracy by Big Paint to get me to buy another can of something.
PRIMER
Does having a coat of primer actually matter that much? Or is it a conspiracy by Big Paint to get me to buy another can of something.
bare wood needs primer. some rusty or bare metal needs primer. If you are putting water base over oil or alkyd you need primer, same if oil or alkyd over water base. new sheetrock can be primed with any flat latex paint. exterior and interior painted surfaces in decent shape do not need primer. water stains need stain blocker. bricks and concrete should not be painted unless you hate life.
t. painting 25 years
> bricks and concrete should not be painted unless you hate life.
* cedar shingles
A guy a few miles away from me remodeled an older house.
He put natural redwood on the house as the exterior siding.
It was beautiful.
I went by a few weeks later and it had gray vinyl siding over the redwood.
I asked a friend who knew a friend what happened.
ANS: *wife*
This fricking trend… the wife was watching those home shows, and every brick house they’re like “we’re going with a cottage look!” and they proceed to paint all of the brick white (the only thing that gave the house some soul) and then paint the roof shingles green.
I frickin lost it when they had a McMansion and the nicest thing in the whole house was a big brick fireplace in the living room with vaulted cielings. Guess what they did to that brick fireplace? White fricking paint.
>before
Ok this room sucks but the fireplace could be comfy as frick with a little work
>after
Is that a fricking TCL tv from Walmart with a yule log stream?
>knew this wood accent would bring interest
It looks like shit
Nah it looks like a propane fireplace with fake glowing logs.
>Karen
Soul
Souless
Are you that bump it in the last page guy again?
No just a bored former painter
my dad painted his 1988 jeep cherokee with oil based house paint. then he painted it again with acrylic house paint. it was more beautiful than a sunburnt boatchick, watching it flake and peel over the next week.
>bricks
airless spray. I'll blast ceilings too and pva prime the walls. I know pro painters hate the airless guns, but they are cheap and have utility.
Wood paints work without any primers iirc, but you should always use it on metal with rust removed
eh it depends i'm not a painter, but i've been in the building business for 25 years.
speaks the truth. some companies offer a tinted primer. or you could just use an extra coat of finnish paint. basically primer just seals up the painting surface, and/or provides a suitable surface for the final coat(s) to adhere to. if you feel as though you don't need either than you don't need a primer. that being said if you're operating in pro context or you just don't know it's better to just prime it or put on some killz or whatevr.
If you paint bare drywall the mud will flash and show. Primer is a waste. Cut in as usual then before you roll the wall, roll over the drywall mud first. Then roll your wall. Two coat always. Dont use cheap brushes, paint or roller pads either. There is an art to painting
drywall anon, how do i fix this corner? it's about 135deg and i don't want to pull down the board to the left. i was going to put an external angle of it and use a bunch of tape and jointing compound but there are some cracks extending into the old board but i'm not sure it'll last. there are cabinets going on the right side and i'm painting it all with the old paint
Put a straight edge on the drywall you dont want to remove and have it float out past the studs.
They have another person slowly move the new drywall panel towards the corner until it just touches the straight edge
Nail it off
This is your new corner, just tape and fill in the gap
Depends on the paint.
If youbare using water solvent based paint on steel, the paint will get lifted by metal oxides. Thats why you apply primer first, for anti corossion properties
Primer is relatively cheap, it’s just a flat latex paint with less titanium oxide in it, and more pva (white glue) for adhesion.
It’s not a scam, per se. on something like drywall, it will seal it to some degree and make your (presumably more expensive) paint go farther and get a better finish.
I think almost everything is a scam. But not primer.
Could you make your own primer? Yeah, add some elmer’s white pva glue.
Primer is typically “flat” because it gives the next layer some tooth to grab onto the primer.
Nice try bozo…you know nothing about painting in fact thats the dumbest reply ever
Like most ignorant home owners you watch bob villadick now youre an expert
except he's completely right and you're an obnoxious moron
Nice try same gayging baby diddler
explain why he's wrong or shut the frick up already you cancerous zoomer
Primer isn't flat though. It has a sheen to it
> sheen
Yeah, a flat sheen.
You want the primer to look like a popcorn ceiling?
Regular primer tends to dry fairly thin sine it has low solids content.
If your primer finishes matte, you got scammed.
Good primer has "some sheen" aka not flat because the acrylic should should create a smooth, sealed surface on which to paint
If you want to get autistic, you're supposed to sand between coats even on drywall to ensure proper adhesion
And remember that "paint+primer" is just a marketing meme created by paint companies to increase the mark up on existing paints by changing the names
This some shit a Lowe's employee would say in 2010
>Does having a coat of primer actually matter that much?
sometimes
Look up acrylic polyurethane dispersion
he is kinda right for stuff at home water based is usualy shit,
but there are industrial paints that are waterbased like car paint nowdays thats super strong,
like acrylic polyurethane burn in primer, but those are super nasty and cancerous.
I thought the entire point of acrylic polyurethane was to be eco friendly and safe?
>eco friendly and safe?
these are two different things its more envioremental friendly because it does not need as much solvent which gets released when drying.
even if its mostly water it needs solvents to like NMP or glycol ethers and they are more toxic than "conventional" solvents like paint thinner.
and polyurethane is made from isocyanates which range from toxic to verry toxic and canerous.
heat drying water based acrylic poliurethane paint also contains oximes which inhibit the isocyanate untill it gets heated and oximes are cancerous.
a conventional solvent borne 2k polyurethane smells much stronger is flamable needs more exhaust treatment. but the overall aceptable work place limits ppm in air are much higher than on the water based ones.
Holy shit, didn't know that
Thanks anon
chem eng?
> and polyurethane is made from isocyanates which range from toxic to verry toxic and canerous
Don’t research what table salt is made of. It seems like that’s gona be waaay deadlier, right?
Chemist? ROFLMAO
When your salt shaker catches on fire, you will not have to worry about the sodium vapors, but when a fire starts and the polyurethane-painted wall catches on fire, the resulting isocyanate breakdown might kill you before you even wake up.
to stay with your salt analogy, salt is cured paint,
a cured paint is almost inert you can lick your car and nothing will happen, wet paint in the can is like the chlorine and sodium are still seperated.
and its still a stupid analogy.
nah just worked with that shit for to long, urethanes are interesting and you can make super durable paint or spray foam out of them, luckily paint uses isocyanates that are less dangerous than those used in sprayfoam, but i still whonder how i didnt got sensitized to that stuff.
> urethanes
Ask anon why he likes urea so much, and where it comes from… wanting it, needing it, wishing for it.
Hint: see piss jug thread
also i dont exaclty now how much PU is in the acrilic paints they sell at the hardware sture as PU-reinforced.
im talking of super durable 2K polyurethane paint with straight isocyanate as hardener, or burn in paint which contains a blocked isocyanate. the hardware stuff usualy does not list anything PU related in the actual sds.
PrepHole doesn't have a board to discuss housing so i will leave the complaint here:
If you are flipping a brick home PLEASE stop painting it white/limewashing it. Tired of out of state flippers making the houses tacky and doubling the price
Do shit the right way, or skip steps and deal with the consequences. If your painting sucks and you're just going to half ass it, skip the primer and masking off.
If you don't have 3 half full cans of primer, have you ever done any painting?
It does. Consider that a good paint's objective is to stick well to a specified surface and present a nice texture. Any deviation from its optimal surface means that the manufacturer must make compromises. A primer has an opposite objective: stick well to most surfaces (or a specific surface) and offer a nice texture for paint to stick to. For instance, most paints will not stick well to metals, especially ones covered with zinc. Primer for metal will stick really well to metal. Or primer for concrete or brickwork will stick really well to that surface. Then once dry or cured, regular paint will stick really nice to that surface.
Some primers even have additional properties such as sealing in odors or pores in masonry. Many primers will have a very thick consistency that will hide cracks and small imperfections. This is why primer will typically cover less surface than an equivalent amount of pain, but it might save you from having to roll a third coat of paint.
No prer or undercoat creates a bonding later between the surface and the top coat. It adheres to the surface much better than top coat does. Plus if your paint bare wood, it makes the top coat a solid colour.
If you don't prime your miniatures paint is not going to stick to a surface.
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You can't get an even finish without a good primer
I've tried so many ways to not use primer but you just can't beat the value or finish
T. Remodeler
I use whatever primer is on sale but have them put a shot of black in it so they know who they are dealing with
this is actually standart practice when painting big steel structures by hand.
you put a slight tint in the secound coat to insure you painted every surface twice
Damn... We've got a pro here boys!
Always bet on putting a shot of black in it
Someone gave me a gallon of black exterior oil based paint that I used on a utility trailer but every time it gets wet it looks kind of milky or something. It doesn't come off and it dries back normal. Am I gonna have to redo it in a month?