Author Topic: Preping Plaster walls after Wallpaper Removal  (Read 16600 times)

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Offline 1chipster

  • Posts: 21
Preping Plaster walls after Wallpaper Removal
« on: May 15, 2010, 12:01 PM »
I have just finished removing 2 layers of wallpaper from intact plaster walls of a room.  I now have to remove residual glue, paint(used to glue the ends of the wallpaper) and sand the surface to smooth it.  I was wondering if using a Rotex 125/150 would  make this job alot quicker and easier?  I need to get a sander for other chores  and think this would be a great excuse to get one now.  If this isn't a far fetched idea, what type/grit of sanding discs should I use? Thanks

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Offline Alex

  • Posts: 6156
Re: Preping Plaster walls after Wallpaper Removal
« Reply #1 on: May 15, 2010, 02:59 PM »
The Rotex will do just fine. Just done a job on plaster with it. I used Brilliant 120 and 180 grit. I prefer the DS400 or the RTS400 though for plaster. Dust collection with the Rotex on plaster wasn't very good.

Offline RonMiller

  • Posts: 318
Re: Preping Plaster walls after Wallpaper Removal
« Reply #2 on: May 15, 2010, 03:11 PM »
I've used the ETS and the DTS both with great results, including collecting a high percentage of the dust. I found that anything from a small room or down is really fast.
Ron

ericbuggeln

  • Guest
Re: Preping Plaster walls after Wallpaper Removal
« Reply #3 on: May 15, 2010, 03:18 PM »
RO 150 with 120 Rubin and finish with 220 Brilliant.  Use Zinsser's Bullseye 1-2-3 primer.  The sealer component in the primer will seal in any residual adhesive that you can't see or feel.  Have done it more times then I care to admit and never had a call back.  Its also an amazing undercoat for the Benjamin Moore topcoat you should be applying.  The RO 150 is an awesome sander, but too big for certain jobs, so don't think this will be your only sander,  Eric

Offline John G

  • Posts: 70
Re: Preping Plaster walls after Wallpaper Removal
« Reply #4 on: May 15, 2010, 08:32 PM »
I've been using a Rotex 150 in a bedroom - the wallpaper came of well with a scraper (or a tug from the bottom) - lots of glue left...

ended up having to drop down to a 40 grit.  vicious but effective

tried using a Rotex 150 on a ceiling...  I just don't have the muscles for it... but then the DTS400 was great.  That's possible my favourite festool - as long as you aren't looking for aggressive removal - it just keeps working and with careful adjustment of speed and extractor just seems to float effortlessly - all day
TS55, MFT, OF1400, Domino, RO150, RTS400 and a race between a growing collection of clamps, guides etc and additional systainers...

Offline Holzhacker

  • Posts: 926
    • www.aic-chicago.com
Re: Preping Plaster walls after Wallpaper Removal
« Reply #5 on: May 15, 2010, 08:58 PM »
Having only played with a Rotex since I don't have one, I tend to think the Rotex might be a bit overkill. If the plaster is disbonded at all or has cracks the Rotex seems to me might make conditions worse. Unless of course one is really skilled at using it.
My ETS and RS both work really well for such work. They are gentler machines. You could get both for roughly one Rotex.
"The Code is not a ceiling to reach but a floor to work up from"

Offline tjbnwi

  • Posts: 6111
  • Cedar Tucky Indiana
Re: Preping Plaster walls after Wallpaper Removal
« Reply #6 on: May 16, 2010, 12:44 AM »
A simple tip, to remove the wallpaper paste (works on the wall paper also) mix fabric softener (I use Downy) at about 25% in warm water, wash the walls. It will not work on the seam glue as well, it does soften it where it can be scraped.

I find this method works better than readily available remover. On vinyl wall coverings you must score of peel the vinyl for the liquid to penetrate.   

Tom

Offline WarnerConstCo.

  • Posts: 4078
    • Warner Mill Works
Re: Preping Plaster walls after Wallpaper Removal
« Reply #7 on: May 16, 2010, 01:47 AM »
Yup, fabric softener and water.
Mist the wall and use a 4" razor wall scraper.

A rotex in RO mode with 120 brilliant, I like that paper.

Offline 1chipster

  • Posts: 21
Re: Preping Plaster walls after Wallpaper Removal
« Reply #8 on: May 16, 2010, 07:21 PM »
 [big grin]WOW GUYS, you are TERRIFIC !!!  What a quick response to my question. You have already made this chore so much easier.   The fabric softener idea is great.  I don't expect to create much dust from sanding but of course I haven't done this before.   For those of you who did not have a good experience with dust collection,  was it the type of sander, paper and/or the vac that seemed to be the problem? I want to buy the appropriate sander for the job.  Thanks

ericbuggeln

  • Guest
Re: Preping Plaster walls after Wallpaper Removal
« Reply #9 on: May 17, 2010, 07:59 AM »
I use a Werner Steamer and DIF spray and roll on with a scoring tool.  I score all walls, roll DIF from floor to ceiling to not make a mess, steam area you are working on while DIF eats away at the rest.  Once you remove paper, it is important to go over the area with the steamer and heat up the wall.  Use old cut up beach towels or something with a little "grit" and wet sand the walls.  Wax on, wax off.  Use Brilliant 220 on RO 150 and you should be able to sand the entire room smooth as a babys butt in less then 15 minutes, ready for primer.  Use 220 between paint coats if you want the best finish ever.

I have never used the fabric softener mentioned, but have heard of it before and can hardly wait til my next bathroom remodel where I will be able to try it out.  If you use DIF, mix it twice as strong and if you start sneezing it is ready, Eric

Offline 1chipster

  • Posts: 21
Re: Preping Plaster walls after Wallpaper Removal
« Reply #10 on: May 17, 2010, 11:24 AM »
 Thanks Eric... for the info.  I was a little concerned about  the type of sander to use.  Glad to see you had good results from the RO 150...I don't have one yet...was considering getting the RO 125... a little lighter in weight and easier to handle.  What are people's thoughts on this?   [smile]

Offline Alex

  • Posts: 6156
Re: Preping Plaster walls after Wallpaper Removal
« Reply #11 on: May 17, 2010, 11:58 AM »
was considering getting the RO 125... a little lighter in weight and easier to handle. 

I think you can't go wrong with either of them. If you have to do large surfaces the 150 will do it slightly faster. If you have to do small surfaces the 125 might be a tad more suitable. But both are usable for the mentioned tasks either way. I have the 150 and think it's easy to control, unlike what some others report. And I think the 125 will still have a lot of power too. The 150 does have the advantage that you can get more different types of abrasives for it, both by Festool and 3rd parties. The professional market is more aimed at 150 mm discs. 

Offline WarnerConstCo.

  • Posts: 4078
    • Warner Mill Works
Re: Preping Plaster walls after Wallpaper Removal
« Reply #12 on: May 17, 2010, 01:20 PM »
I think you could get away with using an ETS sander, either a 150 or 125.

I like my Rotex because of the flexibility I get from it.  I have the 125, I have used the 150 a lot and ideally I would like to have both but, I
have very happy with my 125.

ericbuggeln

  • Guest
Re: Preping Plaster walls after Wallpaper Removal
« Reply #13 on: May 17, 2010, 05:52 PM »
I am partial to the RO 150 and ETS 125 combo.  Best of both worlds.  Having one sander isn't a very good option, 5 or 6 is more like it.  Eric

Offline petiegolfer

  • Posts: 55
  • Southampton UK
Re: Preping Plaster walls after Wallpaper Removal
« Reply #14 on: July 17, 2010, 04:53 AM »
Im just about to start this job this morning. I have the Metabo 450 sander and will be running round the room with 120 grit then washing the walls with a watered down white before a couple of coats of the final colour.

I remove paper with a steamer. The paper was vinal the steamer softens the top layer allowing it to come off the paper backer in large sheets. The paper backing then comes off really easily...you just have to keep things moving quick or you can blow off the plaster. As a result you dont have a lot of adhesive left because it is scraped off with the paper.


Good luck hope you like painting more than I do!! :(

Piers
"3 Its the Magic Number!"

Offline adrianbutler

  • Posts: 1
Re: Preping Plaster walls after Wallpaper Removal
« Reply #15 on: July 01, 2016, 02:15 AM »
Electric sander will do, it can bring the walls smooth and firm again. By the way, if in the future, I suggest that you use eifs fasteners for walls, in this case if you wanted to remove any coating like primer, it will just be as simple as peeling off. This one is available at any of your local home improvement and DIY shop.

Offline Kev

  • Posts: 7652
Re: Preping Plaster walls after Wallpaper Removal
« Reply #16 on: July 01, 2016, 03:13 AM »
Last time I removed wall paper I got cranky and I was left with only wall studs [embarassed]

I've also made the mistake in the past of sanding the surface too deep and having to skim the surface that had become "furry".

In fact I should shut up - I'm the last person to listen to on advice relating to plasterboard [sad]

Offline leakyroof

  • Posts: 2280
Re: Preping Plaster walls after Wallpaper Removal
« Reply #17 on: July 01, 2016, 11:24 AM »
Last time I removed wall paper I got cranky and I was left with only wall studs [embarassed]

I've also made the mistake in the past of sanding the surface too deep and having to skim the surface that had become "furry".

In fact I should shut up - I'm the last person to listen to on advice relating to plasterboard [sad]
  Okay Kev, I have to ask.  How does one become 'cranky' enough to end up with bare wall studs.....???  Large sledgehammer, or smaller one... [wink]
Not as many Sanders as PA Floor guy.....

Offline mike_aa

  • Posts: 1094
Re: Preping Plaster walls after Wallpaper Removal
« Reply #18 on: July 01, 2016, 12:36 PM »
Last time I removed wall paper I got cranky and I was left with only wall studs [embarassed]

I've also made the mistake in the past of sanding the surface too deep and having to skim the surface that had become "furry".

In fact I should shut up - I'm the last person to listen to on advice relating to plasterboard [sad]
  Okay Kev, I have to ask.  How does one become 'cranky' enough to end up with bare wall studs.....???  Large sledgehammer, or smaller one... [wink]

Axe???  [scared]

Offline Spiff

  • Posts: 110
Re: Preping Plaster walls after Wallpaper Removal
« Reply #19 on: November 29, 2016, 02:10 AM »
For all the time and effort involved with poor surfaces prep I'm inclined to just paint it with Thistle Bond-It (or similar) and then re-skim.  If you aren't familiar with this wonder-stuff it's a thin modified polymer with suspended fine sand.  It sticks like glue to any substrate and gives a superb key and zero suction for the plaster.  I've used it a lot on renovations, and it's great too for providing a key-coat for anything tricky, prior to plastering, gluing or whatever.  You need to remove loose coverings first of course, but you can Bond-It over paint layers, mastic, plastic, concrete, wood, plasterboard, tiles - anything really.  Mix well (mechanically) prior to use.
« Last Edit: November 29, 2016, 02:12 AM by Spiff »

Offline ddb

  • Posts: 17
Re: Preping Plaster walls after Wallpaper Removal
« Reply #20 on: November 29, 2016, 06:30 AM »
Thanks Eric... for the info.  I was a little concerned about  the type of sander to use.  Glad to see you had good results from the RO 150...I don't have one yet...was considering getting the RO 125... a little lighter in weight and easier to handle.  What are people's thoughts on this?   [smile]
Funny enough, I just was at my local dealer past weekend to pick up a new sander. I'm fairly new to Festool, and it's my first Festool sander, so I wanted something pretty allround to start with. (Primary applications for me would be wood and drywall/plaster finishing)

After reading so much positive feedback about the rotex series, I walked in to the shop with my mind set to one.
However, my dealer talked me out of it, by having me hold the rotex 150 in one hand and the ETS EC 150 in the other.
The last one is just so much lighter. And what a comfortable grip! That ETS EC 150 is real joy to hold in your hand. And in my opinion, the only one out of those 2 you could operate with one hand on a vertical surface or ceiling.
You really wouldn't want to hold up a rotex 150 for extended periods of time.

But then again, I'm still awaiting delivery, so I haven't actually done any work with either. I just thought I'd share this brief experience, because this goes to show that you can't just rely on what you read on the web. You really have to hold them in your hand. I know I would have gone for the Rotex otherwise. Absolutely a great sander, but not for what I needed now.

Offline leakyroof

  • Posts: 2280
Re: Preping Plaster walls after Wallpaper Removal
« Reply #21 on: December 01, 2016, 01:41 PM »
Thanks Eric... for the info.  I was a little concerned about  the type of sander to use.  Glad to see you had good results from the RO 150...I don't have one yet...was considering getting the RO 125... a little lighter in weight and easier to handle.  What are people's thoughts on this?   [smile]
Funny enough, I just was at my local dealer past weekend to pick up a new sander. I'm fairly new to Festool, and it's my first Festool sander, so I wanted something pretty allround to start with. (Primary applications for me would be wood and drywall/plaster finishing)

After reading so much positive feedback about the rotex series, I walked in to the shop with my mind set to one.
However, my dealer talked me out of it, by having me hold the rotex 150 in one hand and the ETS EC 150 in the other.
The last one is just so much lighter. And what a comfortable grip! That ETS EC 150 is real joy to hold in your hand. And in my opinion, the only one out of those 2 you could operate with one hand on a vertical surface or ceiling.
You really wouldn't want to hold up a rotex 150 for extended periods of time.

But then again, I'm still awaiting delivery, so I haven't actually done any work with either. I just thought I'd share this brief experience, because this goes to show that you can't just rely on what you read on the web. You really have to hold them in your hand. I know I would have gone for the Rotex otherwise. Absolutely a great sander, but not for what I needed now.
  Yes, it's been noted here and on other forums that the new EC model is just fantastic for overhead or even wall work when compared to a Rotex of either 125/150mm size.  Even the older ETS model is heavy when you hold the EC for the first time, but lighter than a Rotex. I made due with using my ETS models for wall and ceiling work for years, thought about the Mirka models, then jumped on a EC 150/5 to replace my ETS 150/5 when they came out. 
Not as many Sanders as PA Floor guy.....

Offline Goz

  • Posts: 96
Re: Preping Plaster walls after Wallpaper Removal
« Reply #22 on: December 02, 2016, 11:43 AM »
Does anyone know if there is an equivalent to Thistle Bond-It in the US?

Sent from my SM-G930R4 using Tapatalk


Offline mike_aa

  • Posts: 1094
Re: Preping Plaster walls after Wallpaper Removal
« Reply #23 on: December 02, 2016, 12:19 PM »
@Goz  Would this work?

I'm not sure if this is the same stuff, but it shares the same name as a product I used to use.  About thirty five years ago there was a crew of plasterers doing a skim coat of plaster all over the interior halls of the old city hall building I worked in.  They trucked in 55 gallon drums of this white stuff called Plaster Weld that smelled like PVA glue and rolled it on before they applied the skim coat.  Worked great and really held up well.  It wasn't available in small sizes then so I found a local supplier who used to package up gallon bottles right from the drum and I always kept some around while working on my own homes.  In addition to rolling it on for a skim coat, you could use it to paint and seal the area around a patch and even mix some in with Durabond 90 for repairs.  Unfortunately, the supplier went out of business and I used up all that I had left.

Mike A. 
« Last Edit: December 02, 2016, 12:23 PM by mike_aa »

Offline Goz

  • Posts: 96
Re: Preping Plaster walls after Wallpaper Removal
« Reply #24 on: December 02, 2016, 02:58 PM »
@mike_aa   Maybe?  I am in the process of removing wallpaper and skim coating my entire house. However, I've been using joint compound, as it's drywall, not plaster.  The idea of eliminating some of the scraping and washing is appealing, but since I'm not using plaster as the top coat, a bonding agent may not help me after all. I'll reach out to Larsen and see what they recommend.  Thanks!

Offline mike_aa

  • Posts: 1094
Re: Preping Plaster walls after Wallpaper Removal
« Reply #25 on: December 02, 2016, 10:24 PM »
@Goz 

FWIW, The plaster weld I used worked well with joint compound and I even mixed it right in when mixing a batch of Durabond 90 compound.  In fact, Durabond and joint compound are pretty much all I used with it. 

You are right about contacting Larsen direct, since I'm not sure if the product is still the same as what I had.  Please let us know what you find out.

Thanks, Mike A.

Offline Goz

  • Posts: 96
Re: Preping Plaster walls after Wallpaper Removal
« Reply #26 on: December 12, 2016, 02:38 PM »
Here's the official response from Larsen:
"Plaster-Weld has been used successfully to bond a variety of gypsum based veneer skim coats. I would advise doing a small test sample before beginning the entire  project.

Best regards,
Larsen Products Corp."


I will pick up a can and test it out. It probably won't be real soon, but I do have a few skim coating projects slated this winter. 

David