cleaning mold off siding - Paint Talk - Professional Painting Contractors Forum
CLICK HERE AND JOIN OUR COMMUNITY TODAY, IT'S FREE!
Go Back   Paint Talk - Professional Painting Contractors Forum > Professional Painters > Surface Preparation and Application

Like Tree6Likes
  • 1 Post By Lambrecht
  • 1 Post By stelzerpaintinginc.
  • 1 Post By johnnyb
  • 1 Post By Lambrecht
  • 1 Post By Lambrecht
  • 1 Post By Lambrecht
Reply
 
Thread Tools Display Modes
Old 03-07-2016, 06:06 PM   #1
Senior Member
 
Join Date: Jun 2009
Location: Oklahoma
Posts: 1,309
Rewards Points: 904
Thanks: 81
Thanked 593 Times in 387 Posts
View jacob33's Photo Album My Photos
Default cleaning mold off siding

For washing cedar siding that in moldy I have always used bleach and tsp and than followed up with oxalic acid (wood bleach) to brighten it. I saw a new product that in hydrogen peroxide based and it claims to clean the cedar as well as tsp/bleach without hurting the wood or the negative environmental imapact. Has anyone tried a peroxide based cleaner and did it work?
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Last edited by jacob33; 03-07-2016 at 06:15 PM..
jacob33 is offline   Reply With Quote

Warning: The topics covered on this site include activities in which there exists the potential for serious injury or death. PaintTalk.com DOES NOT guarantee the accuracy or completeness of any information contained on this site. Always use proper safety precaution and reference reliable outside sources before attempting any construction or remodeling task!

Sponsored Links
Advertisement
 
Old 03-07-2016, 07:35 PM   #2
Troy
 
stelzerpaintinginc.'s Avatar
 
Join Date: May 2012
Location: Portland, OR
Posts: 1,954
Rewards Points: 92
Thanks: 2,061
Thanked 2,571 Times in 1,135 Posts
View stelzerpaintinginc.'s Photo Album My Photos
Default

Quote:
Originally Posted by jacob33 View Post
For washing cedar siding that in moldy I have always used bleach and tsp and than followed up with oxalic acid (wood bleach) to brighten it. I saw a new product that in hydrogen peroxide based and it claims to clean the cedar as well as tsp/bleach without hurting the wood or the negative environmental imapact. Has anyone tried a peroxide based cleaner and did it work?
There's still nothing better than bleach for killing mold, no matter how many times they try to reinvent the wheel. I'd skip the tsp though, since it can cause all kinds of headaches, including etching windows. TSP is far worse for the environment than bleach. If anything, I'd add a little sodium hydroxide to the bleach, then follow up with oxalic.
__________________
Troy Stevens, Stelzer Painting Inc.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
stelzerpaintinginc. is offline   Reply With Quote
The Following 3 Users Say Thank You to stelzerpaintinginc. For This Useful Post:
PRC (03-08-2016), PremierPaintingMa (03-08-2016), PressurePros (03-08-2016)
Old 03-07-2016, 09:55 PM   #3
Senior Member
 
Join Date: Jun 2009
Location: Oklahoma
Posts: 1,309
Rewards Points: 904
Thanks: 81
Thanked 593 Times in 387 Posts
View jacob33's Photo Album My Photos
Default

That is kinda what I thought I have not found anything better than bleach for killing and cleaning mold. I rarely use tsp unless its real bad and the one I got coming up is. I will try it without first and see. I'm not an environmentalist by any stretch but I have always said if people would just be smart and only use things when needed it would not need to be regulated as much. Its even hard to find real tsp anymore.
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
jacob33 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 03-07-2016, 10:29 PM   #4
Lambrecht Painting
 
Lambrecht's Avatar
 
Join Date: Feb 2010
Location: Indiana
Posts: 1,607
Rewards Points: 1,094
Thanks: 1,797
Thanked 1,307 Times in 656 Posts
View Lambrecht's Photo Album My Photos
Default

I have been using oxyclean for years on mold and for wood brightening. It is cheap, does not hurt vegetation, kills the mold, and brightens the wood. Hydrogen peroxide and sodium percarbonate are the same thing. Sodium percarbonate is the main ingredient in oxyclean . I use it to clean most anything that I am going to paint exterior. It really works great at removing chalking paint.
salvagetherapy likes this.
__________________
The easiest job you will ever have is waking up and going to work for someone else.
Lambrecht is offline   Reply With Quote
The Following 3 Users Say Thank You to Lambrecht For This Useful Post:
futtyos (03-21-2016), PremierPaintingMa (03-08-2016), PressurePros (03-08-2016)
Old 03-07-2016, 10:59 PM   #5
Troy
 
stelzerpaintinginc.'s Avatar
 
Join Date: May 2012
Location: Portland, OR
Posts: 1,954
Rewards Points: 92
Thanks: 2,061
Thanked 2,571 Times in 1,135 Posts
View stelzerpaintinginc.'s Photo Album My Photos
Default

Quote:
Originally Posted by Lambrecht View Post
I have been using oxyclean for years on mold and for wood brightening. It is cheap, does not hurt vegetation, kills the mold, and brightens the wood. Hydrogen peroxide and sodium percarbonate are the same thing. Sodium percarbonate is the main ingredient in oxyclean . I use it to clean most anything that I am going to paint exterior. It really works great at removing chalking paint.
Edit
__________________
Troy Stevens, Stelzer Painting Inc.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Last edited by stelzerpaintinginc.; 03-07-2016 at 11:09 PM..
stelzerpaintinginc. is offline   Reply With Quote
Old 03-08-2016, 04:48 AM   #6
PRC
Senior Member
 
Join Date: Aug 2014
Location: Pennsylvania
Posts: 1,352
Rewards Points: 46
Thanks: 2,089
Thanked 954 Times in 564 Posts
View PRC's Photo Album My Photos
Default

Quote:
Originally Posted by stelzerpaintinginc. View Post
There's still nothing better than bleach for killing mold, no matter how many times they try to reinvent the wheel. I'd skip the tsp though, since it can cause all kinds of headaches, including etching windows. TSP is far worse for the environment than bleach. If anything, I'd add a little sodium hydroxide to the bleach, then follow up with oxalic.
I have been thinking about adding sodium hydroxide to my mix. Isn't that what helps kill the "roots" of molds? Where do you get sodium hydroxide from? How much do you put in a 5 gal. washing mix?
PRC is offline   Reply With Quote
Old 03-08-2016, 08:17 AM   #7
Troy
 
stelzerpaintinginc.'s Avatar
 
Join Date: May 2012
Location: Portland, OR
Posts: 1,954
Rewards Points: 92
Thanks: 2,061
Thanked 2,571 Times in 1,135 Posts
View stelzerpaintinginc.'s Photo Album My Photos
Default Adding Sodium Hydroxide to Sodium Hypochlorite

Quote:
Originally Posted by PRC View Post
I have been thinking about adding sodium hydroxide to my mix. Isn't that what helps kill the "roots" of molds? Where do you get sodium hydroxide from? How much do you put in a 5 gal. washing mix?
http://www.pressuretek.com/f18max.html

Amounts will depend upon your machine's gpm's, your injector's draw-rate, condition of substrate, whether you're doing a deep cleaning vs. stripping a stain, etc.
salvagetherapy likes this.
__________________
Troy Stevens, Stelzer Painting Inc.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
stelzerpaintinginc. is offline   Reply With Quote
The Following 2 Users Say Thank You to stelzerpaintinginc. For This Useful Post:
PRC (03-08-2016), PremierPaintingMa (03-08-2016)
Old 03-08-2016, 03:22 PM   #8
Member
 
Join Date: Jul 2015
Location: PB, FL
Posts: 58
Rewards Points: 116
Thanks: 102
Thanked 67 Times in 31 Posts
View johnnyb's Photo Album My Photos
Default

sodium hypochlorite is a chlorine based bleach, not recommended on wood

sodium percarbonate is a oxygen based bleach, works wonders on wood.

as far as naoh/hydroxide is concerned, its a grease killer, stick with bleaches for organic killing.

i feel bleach is a term america came up with to keep people in the dark, and help companies over sell diluted chlorine bleach.

to make (chlorine based bleaches) chlorine gas for lack of better words mixed with naoh will produce sodium hypochlorite (naocl)

it gets a whole lot more complicated than this, but there's some basics
salvagetherapy likes this.
johnnyb is offline   Reply With Quote
Old 03-08-2016, 04:01 PM   #9
Senior Member
 
PressurePros's Avatar
 
Join Date: May 2007
Posts: 5,097
Rewards Points: 3,012
Thanks: 1,937
Thanked 5,801 Times in 2,487 Posts
View PressurePros's Photo Album My Photos
Default

Sodium percarb would be preferred as its less harsh but its agonizingly labor intensive on vertical surfaces. It could take literally hours for the oxidizing reaction to take place enough to allow the mold to be removed. Considering a chem solution will dry in 10-15 mins on vertical surface, you are talking about applying it over and over again over the course of the few hours.

I am the founder and original owner of Restore-A-Deck (www.restore-a-deck.com) The chemical compound we used contained some boosters and clinging surfactants. I don't own the company any more but its still the best sodium percarb based cleaner available if you go that route.
__________________
PressurePros is a Pressure Washing Company servicing Delaware and Montgomery Counties in PA

PressurePros is offline   Reply With Quote
The Following 4 Users Say Thank You to PressurePros For This Useful Post:
Lambrecht (03-08-2016), PRC (03-13-2016), PremierPaintingMa (03-08-2016), stelzerpaintinginc. (03-08-2016)
Old 03-13-2016, 07:23 PM   #10
Member
 
JakeTheAnchor's Avatar
 
Join Date: Feb 2016
Location: Dublin, CA
Posts: 75
Rewards Points: 50
Thanks: 26
Thanked 21 Times in 19 Posts
View JakeTheAnchor's Photo Album My Photos
Default

watered down bleach in hudson sprayer
JakeTheAnchor is offline   Reply With Quote
Old 03-13-2016, 07:48 PM   #11
Senior Member
 
Join Date: Feb 2013
Posts: 389
Rewards Points: 579
Thanks: 1
Thanked 157 Times in 109 Posts
View Phinnster's Photo Album My Photos
Default

Hey lambrecht
Can u tell us your mix
What sprayer do you use

And do you use it on the homes / decks you clean regardless of paint of clear coats ?
Thanks
Phinnster is offline   Reply With Quote
Old 03-13-2016, 08:15 PM   #12
Lambrecht Painting
 
Lambrecht's Avatar
 
Join Date: Feb 2010
Location: Indiana
Posts: 1,607
Rewards Points: 1,094
Thanks: 1,797
Thanked 1,307 Times in 656 Posts
View Lambrecht's Photo Album My Photos
Default

I generally use 10-12 cups in a 30 gallon trash can then use a gas powered transfer pump with garden hose attached to apply the mix. I put the oxyclean in the can first then add water so I am sure that it get thoroughly dissolved.
Attached Thumbnails
cleaning mold off siding-image.jpg  

salvagetherapy likes this.
__________________
The easiest job you will ever have is waking up and going to work for someone else.
Lambrecht is offline   Reply With Quote
Old 03-13-2016, 08:16 PM   #13
Lambrecht Painting
 
Lambrecht's Avatar
 
Join Date: Feb 2010
Location: Indiana
Posts: 1,607
Rewards Points: 1,094
Thanks: 1,797
Thanked 1,307 Times in 656 Posts
View Lambrecht's Photo Album My Photos
Default

Before
Attached Thumbnails
cleaning mold off siding-image.jpg  

__________________
The easiest job you will ever have is waking up and going to work for someone else.
Lambrecht is offline   Reply With Quote
Old 03-13-2016, 08:34 PM   #14
Senior Member
 
Join Date: Feb 2013
Posts: 389
Rewards Points: 579
Thanks: 1
Thanked 157 Times in 109 Posts
View Phinnster's Photo Album My Photos
Default

That looks mental
Think u posted that a long time ago
So you only use oxi clean
No cleaners or brightners ?

And I am assuming you only use this when its natural wood you want brought back
Not a surface that is going to be painted ?
Phinnster is offline   Reply With Quote
Old 03-13-2016, 09:04 PM   #15
Lambrecht Painting
 
Lambrecht's Avatar
 
Join Date: Feb 2010
Location: Indiana
Posts: 1,607
Rewards Points: 1,094
Thanks: 1,797
Thanked 1,307 Times in 656 Posts
View Lambrecht's Photo Album My Photos
Default

I use it on almost everything exterior that I am going to stain or paint. Wood stained and unstained, vinyl, aluminum, lawn furniture, galvanized metals, concrete, etc.. For heavily molded areas with I will soak and let sit for about 20 minutes reapply a second dose then let it sit for another 10-15 then rinse with low- medium pressure. It will come of easy peasy. My favorite part is the cost involved, availability, and it does not hurt vegetation.
salvagetherapy likes this.
__________________
The easiest job you will ever have is waking up and going to work for someone else.
Lambrecht is offline   Reply With Quote
Old 03-13-2016, 10:50 PM   #16
Senior Member
 
Join Date: Feb 2013
Posts: 389
Rewards Points: 579
Thanks: 1
Thanked 157 Times in 109 Posts
View Phinnster's Photo Album My Photos
Default

What does it do to Windows ( just wondering how to treat them while / after washing )

Where do you buy it

Does it ever irritate skin

thanjs
Phinnster is offline   Reply With Quote
Old 03-14-2016, 07:31 AM   #17
Lambrecht Painting
 
Lambrecht's Avatar
 
Join Date: Feb 2010
Location: Indiana
Posts: 1,607
Rewards Points: 1,094
Thanks: 1,797
Thanked 1,307 Times in 656 Posts
View Lambrecht's Photo Album My Photos
Default

It cleans the windows really well. It does not hurt the glass or leave a white residue like some cleaners. I generally buy the biggest box I can at Sams or at Wal-Mart. No it doesn't hurt the skin. Oxy-clean isn't as concentrated or strong as some cleaning products that contain sodium percarb that will severely dry out your skin. I personally have never had any skin irritation problems when using Oxy-clean.
salvagetherapy likes this.
__________________
The easiest job you will ever have is waking up and going to work for someone else.
Lambrecht is offline   Reply With Quote
Old 03-14-2016, 05:49 PM   #18
Senior Member
 
Join Date: Feb 2013
Posts: 389
Rewards Points: 579
Thanks: 1
Thanked 157 Times in 109 Posts
View Phinnster's Photo Album My Photos
Default

Hey lambrecht
What do you think as a cleaner and brightner on teak furniture ?
Phinnster is offline   Reply With Quote
Old 03-14-2016, 07:15 PM   #19
Lambrecht Painting
 
Lambrecht's Avatar
 
Join Date: Feb 2010
Location: Indiana
Posts: 1,607
Rewards Points: 1,094
Thanks: 1,797
Thanked 1,307 Times in 656 Posts
View Lambrecht's Photo Album My Photos
Default

Have never used it in teak but don't see any reason why it wouldn't work.
__________________
The easiest job you will ever have is waking up and going to work for someone else.
Lambrecht is offline   Reply With Quote
Old 03-17-2016, 08:41 AM   #20
Senior Member
 
Join Date: Mar 2008
Location: Toledo,Oh
Posts: 586
Rewards Points: 390
Thanks: 11
Thanked 81 Times in 65 Posts
View Veith@toast.net's Photo Album My Photos
Default

Hay Lambrecht what transfer pump are you using and how high are you spraying or do you have a long wand for second story's.
__________________
David Enterprises Inc.
Toledo, Ohio

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Veith@toast.net is offline   Reply With Quote
Reply

Tags
None

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Mold inhibiting paint daArch Specialty Coatings 20 11-20-2015 08:46 PM


All times are GMT -4. The time now is 02:46 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.1
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Our Pro Sites Network
ContractorTalk.com | DrywallTalk.com | ElectricianTalk.com | HVACSite.com | PlumbingZone.com | RoofingTalk.com