Browse Forums DIY, Home Maintenance & Repair 1 Sep 27, 2010 6:41 pm Spent long w/end painting spare bedroom - first timers - walls, ceilings great for novices BUT other half attempted to paint wardrobe doors, door trims and bedroom door with water based satin finish, except have found out now (after seeing streaky finish on 1st coat) have painted over oil based paint with NO preparation. What do we do now??? Other half wants to continue with 2nd coats to see if any better, can this be done and if not, why? We don't want to make a bad job worse. Thinking may be easier to replace doors if possible. Appreciate any solutions/answers. Re: Painting Bungle - Help Wanted 3Sep 27, 2010 8:51 pm Is the water based paint an enamel? ...if yes Sand the streaks out with 120 grit sand paper (white) and buy a better brush. ...if no Sand the streaks and paint with a 3 in 1 primer EDIT : sorry for the double post I think IE 9 Beta is playing up. Re: Painting Bungle - Help Wanted 4Sep 27, 2010 11:02 pm Best way is strip it back and paint a sealer taubmans 3 in 1 would be good Zinsser 123 is better But as TheOK has stated if it is water based enamel then a second coat with a good brush should suffice lightly sand primer coat to remove highspots and 2 coats of topcoat one thing to remember water based finishes can take up to a month to fully cure as they dry outside in so they will not achieve full hardness until it is fully cured also buy a better brush I have a brush that I have used for the last 10 odd years still applies beautifully Personally I prefer Oil based finishes on doors and trim I went outside once. The graphics were alright, but the gameplay sucked! Settlement:22nd June Slab:27th August Frame:16th Sept Bricked:21st Oct Roof:24th Nov Linings HANDOVER23rd March! Re: Painting Bungle - Help Wanted 5Sep 28, 2010 9:08 am If it is a water based enamel I'd get rid of the coat. I have used this on one room before and never again, it just does not "stick". Go for oil based enamel. If it is oil based, just sand back and recoat with a sealer. Add a bit of Penetrol to your top coats, it helps the paint run a bit and will make streakless painting a bit easier. Re: Painting Bungle - Help Wanted 6Sep 28, 2010 9:15 am What mecha-wombat said, what I want to know is, why did your paint shop not ask you what you were painting on, even if you didn’t know the original paint was enamel, they should have asked you and advised a 3 in 1 undercoat. 90% of the time, if not more, anyone buying a water based product for trims and doors that is going over a previously paint surface should use an undercoat of some description. rozziemc, it’s not your fault that you didn’t use an undercoat, the person who sold you the paint didn’t do their job properly Current status: Busy making the house our home Built PD Francis 29 on our 576m2 block at Reflections in Tarneit Reflections Estate Thread Our Build Thread Re: Painting Bungle - Help Wanted 7Sep 28, 2010 11:59 am Thanks all for your very much appreciated advice. Spoke to Paint shop today and they also said they should have asked what we were painting. They also suggest, as it is water based enamel, to sand lightly, then apply second coat with good quality brush, allowing for the paint to properly dry first before sanding and recoating. This is a great forum and one I am sure I will be using again for future 'home' projects. Re: Painting Bungle - Help Wanted 8Sep 28, 2010 7:53 pm rozziemc Thanks all for your very much appreciated advice. Spoke to Paint shop today and they also said they should have asked what we were painting. They also suggest, as it is water based enamel, to sand lightly, then apply second coat with good quality brush, allowing for the paint to properly dry first before sanding and recoating. This is a great forum and one I am sure I will be using again for future 'home' projects. You're welcome... cheers.. Re: Painting Bungle - Help Wanted 9Sep 28, 2010 8:25 pm Hi, This is my first time on the forum.. Saw your post, and as im a trade qualified painter I thaught I would chime in. First thing.. Water based enamel is a hard product to use sucessfully, regardless of brand. Its not a product i would reccomend to ametuers. Having said that, satin is more forgiving than gloss. and there is no reason you shouldn't be able to have a reasnable result with some care. So i take from your post that you have 1 coat of the 'WB' enamel on at least some of your doors/trim, the only concern here is if the paint is stuck..... can you scratch the new paint off 'easily' with your fingernail? (this is your call.. if it scratches off now, it will scratch off with another 3 coats on it. if its a cupboard door it will probably get knocked.....) So if it does scratch off: most likley... You will have to get it all off, or live with a door that is easily chipped. There are numerous ways to remove the offending paint, none of wich are fun.. scratch, scrape, sand curse ect.. If it doesnt scratch off: You just undercoated your door... As long as the 'streaky finish' isnt actually runs or sags then this is no problem.... Sand With 180grit (120 grit may scratch) or a 'medium' sanding sponge. sanding up and down to avoid seeing scratch marks in the light. Continue with 1st top coat.. then 2nd top coat.... (avoid sanding between finish coats, if necessary use worn sandpaper) (if you are satisfied with the coverage and finish of the first coat when dry, then a 2nd top coat is not required For Future refrence: Any water or oil based enamels need to be used over a good quality undercoat (if you have more doors and whatnot to do, then get some) When painting over old gloss Enamel (oil based) sand thouroughly with 120grit, and use good quality undercoat (if waterbased undercoat doesnt pass the 'scratch test' after a few days then oil based undercoat is required. Dont get 'quick dry' oil based undercoat... unless your really fast. Oil based gloss (and semi gloss) trimm paint is far easier for an amatuer to use, even with the mess and smell i wouldnt reccomend a water based trim paint to an amatuer (or a professional) Unless...........there is an exception (predictibably) and that is if your trim colour is WHITE or nearly white... Oil based paint yellows with age (in dark areas especially, like internal sliding doors backs of seldom shut doors ect.) this can happen, even with premium procucts, within 3-6 months.. yuck.. so if you want white doors/trim the waterbased enamel is the way to go.. Water based Enamel.. weather will be a primary concern when using this product, on a hot day thin 5% to 8%...roughly..lol thining some products to close to 10% may cayse streaks, uneaven finish, poor coverage ect. so be carefull. on a cold wet day thinning should not be required unless the product is 'thick'. hard to explain... if you dribble paint into the pot of paint from the brush, it should settle out flat nearly immediatly.. the opposite of whipped cream if you get my drift The idea is to have the pruduct settle out flat. like oil based paints do. apply a good thick 'wet' coat, but not too thick sags and runs are very obvious in this product (the streaks in your doors are from one of the fololowing: too thick a coat of paint, paint too thin or very high humidity.) you cannot 'Play' with water based enamel.. put the paint on fast. lay it off ONCE.. do not go back on your work..other than runs that will be hard to sand out later.. use a small brush for this. I certanally hope you are using a roller for those doors (i'm beginning to think that the 'streaks' you mention are brush marks.. if so get a electric orbital sander on it with 120 grit, to remove the roughness.. they dont have to look like a car panel, then undercoat and re-sand if required)... If ANYONE has ever painted a flat door in waterbased enamel with a brush that looks even ok.. i would love to see it.. the paint stores really shouldnt be pushing this stuff so hard. do the door edges before the faces. wipe the edges with your finger/rag, after its dry, roll the faces.. spread the paint all over the door fast, then lay off in one direction (up/down) DONT THINK "I'LL JUST FIX UP THAT BIT I DID BEFORE!!!!!" Hope this helps.. Rhys Re: Painting Bungle - Help Wanted 10Sep 29, 2010 9:38 am Rhys I do not think paint stores push this product but it is consumers do not want to clean up brushes with turps DIY people go with what they think is the easy way 99% of the time I went outside once. The graphics were alright, but the gameplay sucked! Settlement:22nd June Slab:27th August Frame:16th Sept Bricked:21st Oct Roof:24th Nov Linings HANDOVER23rd March! Re: Painting Bungle - Help Wanted 11Sep 29, 2010 4:27 pm i see what you mean, mecha-wombat, paint stores dont 'push' this product, more than any other, however im sure most diy'ers would live with the smell/turps cleanup, if they realised that it would be far harder to obtain an acceptable result with water based paint. the paint shops should be advising people on how to use the product if they are going to sell it to DIY'ers. I realise it comes down to the buyers perception of what is going to be 'easy' but it is the job of the salesman to inform the customer. Surely it is not in the best intrests of the paint company for diyers to have inferior results. diy'er 1 "wow your frames are so shiny! what brand of paint did you use?" diy'er 2 "i used X brand its great!" diy'er 1 "i should have used X brand, i did my house in Y brand, and the doors and frames all have brushmarks, and arnt even shiny.. I would never reccomend Y brand!" Hi, Have used the Dulux 1 step, oil base on my walls(white set), out of can it’s already a more thinner product than a final coat paint Also in water base Water or… 3 5073 Thanks mate, is there a standard off the shelf type breathable product I can apply DIY? Thanks 2 8307 |