DIYnot
Local | Network
   DIYnot > Forums
Local | Network
DIYnot Network Local DIYnot Network Local  
  Forum IndexForum Index     RulesRules    HelpHelp     Join FREERegister Free     About CookiesCookies     SearchSearch     LoginLogin 

Cleaning rendering / roughcasting.

Goto page 1, 2  Next
 
Post new topic   Reply to topic    DIYnot.com Forum Index > Building
Search this topic :: View previous topic :: View next topic  
Author Message
crapday

from United Kingdom

Joined: 11 Feb 2007
Posts: 60
Location: Glasgow,
United Kingdom

PostPosted: Sun May 06, 2007 1:06 pm Reply with quote

I live in a 1960 john lawrence house in the Glasgow suburbs. The outside walls have been "pebble dashed", what I would like to know is, can I wash the rendering with a jet spray ?. My next door neighbor's walls are really clean and mine look dirty in comparison. They have lived there for 9 years and us for 11 years, in that time they have not had their walls cleaned so I can't ask them how their wall seem to be cleaner.

If I can't jet spray the walls then is there another way to clean this type of finished wall surface.

cheers Gary.
Back to top
 Alert Moderators

If you do not want to see this advert, click here to login or if you are new click here to join free.
noseall

from United Kingdom

Joined: 02 Feb 2006
Posts: 19677
Location: Staffordshire,
United Kingdom
Thanked: 1149 times

PostPosted: Sun May 06, 2007 2:00 pm Reply with quote

there can be noticeable differences between windward and leeward sides of a building, also location of say a tree can have an effect as to how a building can weather.

south facing elevations are generally cleaner and moss free whereas north or east facing equivalent walls can be a lot more 'weathered'.
Back to top
 Alert Moderators
allanlaw

from United Kingdom

Joined: 24 Dec 2006
Posts: 24
Location: Ayrshire,
United Kingdom

PostPosted: Fri Feb 08, 2008 5:04 pm Reply with quote

Did you manage to clean the roughcast? What did you use?

I have black marks over my walls (believe to be oxidation) and looking to clean.

Ive heard that you can get the pebble dash acid washed, is this true, and can you buy it from B&Q etc?

Do you need to get rid of the oxidation before you can paint the pebble dash walls?

cheers

allan
Back to top
 Alert Moderators
roughcaster

from United Kingdom

Joined: 02 Aug 2007
Posts: 4360
Location: Moray,
United Kingdom
Thanked: 509 times

PostPosted: Fri Feb 08, 2008 7:57 pm Reply with quote

I would be very careful trying to wash roughcast with a power washer. It would probably work but at what cost. If it caused damage to the r/cast then what? With rendering it would be easier, but still worth testing an area first. If you do go for it, better maybe to use it as a spray from a few feet away, rather than too close with the jet. Once you've started, your commited.

Roughcaster.
Back to top
 Alert Moderators
allanlaw

from United Kingdom

Joined: 24 Dec 2006
Posts: 24
Location: Ayrshire,
United Kingdom

PostPosted: Sat Feb 09, 2008 1:21 pm Reply with quote

Roughcaster,

Can you suggest any chemicals or acid to use, as water it self hasn't worked, many thanks allan
Back to top
 Alert Moderators
corrie

from United Kingdom

Joined: 29 Nov 2007
Posts: 108
Location: United Kingdom

PostPosted: Sun Feb 10, 2008 8:56 pm Reply with quote

Lawrence houses of that era have drydash with Durite or similar. As Roughcaster says you can`t put the power on it as you will remove chips. Do a very small test sample. If it is mossy or algae type dirt try a Fungicide. If road dirt try washing Soda or similar. Spray on and spray off only. Those little weedkiller sprays are ok.

If it`s spoiling your property you can overdash it with suitable method for a "new look" provided roughcast is sound and you have room on the detail to avoid any proudness issues of the new cast.

Alex
Back to top
 Alert Moderators
roughcaster

from United Kingdom

Joined: 02 Aug 2007
Posts: 4360
Location: Moray,
United Kingdom
Thanked: 509 times

PostPosted: Mon Feb 11, 2008 12:45 am Reply with quote

Hi Alan,
Just read your post. No, i'm sorry I can't suggest any chemical or acid for your situation, although others might know of some. As Corrie suggested, you could always roughcast over what you have to smarten it up, but there would be a substantial cost involved,scaffolding etc. Hope you can find some products that will do your job.

Roughcaster.
Back to top
 Alert Moderators
cleaning123

from United Kingdom

Joined: 15 Feb 2014
Posts: 5
Location: Lancashire,
United Kingdom

PostPosted: Sat Feb 15, 2014 10:50 am Reply with quote

K-rend and render cleaning
As a task which takes time, effort and experience, render cleaning can often be overlooked when we are completing the general maintenance of our homes or business residence. Depending on the size of the building and the extent of the eyesores and growths found on the render, the job of render cleaning can potentially require many hours of work and the use of specialised equipment. On top of this, the choosing of an inappropriate method of cleaning can lead to discolouration or even damage to the surface of the k-rend render, sometimes leaving more of an eyesore than the growth which was being removed. This has led many home owners and businesses to recruit the help of specialist render cleaning companies , who offer an effective cleaning service with an affordable price tag.
So, exactly what happens to our render, and why will it need cleaning from time to time?
As our main defence from the elements, it is not uncommon for our walls to take a battering from Mother Nature especially during the wet and windy winter months. This can cause discolouration and corrosion, but also allows moisture to cling to the render. Should this happen, any organic matter which is introduced can rapidly begin growing. This causes unsightly green patches across our building fascias, usually consisting of algae and lichen.
Companies like mine spend considerable time and money researching the science behind render cleaning, in an attempt to understand the ways which biological organisms accumulate and grow on render surfaces, and the most effective processes for removing them without damaging the underlying render.
Algae is one of the most common eyesores to tackle during render cleaning, as a microbe which can grow in tough conditions yet produces a brightly coloured eyesore. As well as ruining the aesthetic appearance of our homes and commercial properties, algae can grow within the pores of brickwork, leading to structural weaknesses which can become dangerous if left unattended for too long.
As well as algae and moss, fungi will typically be found on render. The most common species release acids and pigments which corrode and discolour render and brickwork, reproducing even on very acidic and dehydrated render surfaces. This can quickly lead to a less than pleasing building exterior, affecting our pride in a residential setting, or our appearance of professionalism in the workplace.
Render cleaning companies have years of experience in the treatment of such eyesores, using biocidal agents to kill off biological organisms before selecting the correct method of washing to remove the organic matter without damaging the underlying render. Once your render is as good as new, a protective coating can be applied to provide additional protection for years to come. A protective coating will prevent the accumulation and reproduction of many organic eyesores, while also providing protection against corrosion from the elements.
We have uploaded a video on you tube regarding the cleaning of render
http://www.youtube.com/watch?v=sFFrLESuN1U
Back to top
 Alert Moderators
conny

from United Kingdom

Joined: 30 Jun 2008
Posts: 9425
Location: Liverpool,
United Kingdom
Thanked: 110 times

PostPosted: Sat Feb 15, 2014 10:55 am Reply with quote

The original post is over 7 years old and last reply 6 years ago.

Are you trying to promote your company? If so that is against site rules.
Back to top
 Alert Moderators
cleaning123

from United Kingdom

Joined: 15 Feb 2014
Posts: 5
Location: Lancashire,
United Kingdom

PostPosted: Sat Feb 15, 2014 11:33 am Reply with quote

I was carefull not to mention my company ..
Over the last couple of years we have witnessed a lot of damaged render due to people using the wrong cleaning methods for render ..ranging from industrial pressure washers to strong organic acids.
These "specialist "renders are now becoming more popular
If I can help or assist by providing the correct information ..I will do.
I did not realise the post was that old.
Regards Chris
Back to top
 Alert Moderators
ban-all-sheds

from United Kingdom

Joined: 27 Aug 2003
Posts: 46647
Location: London,
United Kingdom
Thanked: 1685 times

PostPosted: Sat Feb 15, 2014 12:45 pm Reply with quote

cleaning123 wrote:
I was carefull not to mention my company ..

You posted a link to a youtube video which mentions your company, you ****.


Quote:
I did not realise the post was that old.

So as well as being a lying, cheating, thieving ****, you are incredibly thick as well.
Back to top
 Alert Moderators
cleaning123

from United Kingdom

Joined: 15 Feb 2014
Posts: 5
Location: Lancashire,
United Kingdom

PostPosted: Sat Feb 15, 2014 1:24 pm Reply with quote

ban-all-sheds wrote:
cleaning123 wrote:
I was careful not to mention my company ..

You posted a link to a youtube video which mentions your company, you ****.


Quote:
I did not realise the post was that old.

So as well as being a lying, cheating, thieving ****, you are incredibly thick as well.

Lying,Cheating,thieving? Bit strong ... icon_biggrin.gif icon_biggrin.gif
Ban-all-sheds
Do you clean render? If so what do you recommend?
Back to top
 Alert Moderators
ban-all-sheds

from United Kingdom

Joined: 27 Aug 2003
Posts: 46647
Location: London,
United Kingdom
Thanked: 1685 times

PostPosted: Sat Feb 15, 2014 1:52 pm Reply with quote

cleaning123 wrote:
Lying,Cheating,thieving? Bit strong ...

You lied when you agreed to the terms & conditions on registering.

You are taking site resources for commercial gain and not paying for them.

My description of you was accurate.
Back to top
 Alert Moderators
cleaning123

from United Kingdom

Joined: 15 Feb 2014
Posts: 5
Location: Lancashire,
United Kingdom

PostPosted: Sat Feb 15, 2014 2:53 pm Reply with quote

I see your point...but it was not my intention ..to lie,cheat or steal!
Here is me thinking it was a positive post that people might take something from .
It is a fact what I do for a living is clean different types of renders/substrates. ..I consider myself qualified to offer advice on the subject.
I don't think that I would stretch as far as to pay someone to allow me to offer free advice though.
Back to top
 Alert Moderators
ban-all-sheds

from United Kingdom

Joined: 27 Aug 2003
Posts: 46647
Location: London,
United Kingdom
Thanked: 1685 times

PostPosted: Sat Feb 15, 2014 6:24 pm Reply with quote

cleaning123 wrote:
I consider myself qualified to offer advice on the subject.

Which you could do without promoting your business, like all the other qualified people on the site.
Back to top
 Alert Moderators
Search this topic :: View previous topic :: View next topic  
Post new topic   Reply to topic    DIYnot.com Forum Index > Building All times are GMT
Goto page 1, 2  Next
Page 1 of 2

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
Similar Topics   Replies   Views   Posted 
Dampness after roughcasting 11 440 Thu Dec 30, 2010 4:46 pm
Roughcasting problem 9 1120 Mon Oct 19, 2009 5:06 pm
cleaning slate floor tiles 3 140 Sat Jun 11, 2011 6:23 pm
Cleaning London stock bricks - nothing seems to work! 8 240 Sun Sep 02, 2012 8:42 am
cleaning up exterior red brick (old paint remanant/debris) 6 180 Fri Apr 29, 2011 3:20 pm


 
DIYnot
Find an Expert | Find a Supplier | Search DIYnot.com
Network | Advertising | Newsletter
DIY | DIY How To | @home | DIY Wiki | DIY Forum
By using this site you agree to our Terms of Service / Disclaimer.
Please read our Privacy Policy. Copyright © 2000-2014 DIYnot Limited.