what am i doing wrong


Postby rnd » Tue Nov 13, 2007 10:27 am

hi all can someone tell me where iam going wrong with my skiming. i have just re-skimed a wall in my house and albeit it looked fine when wet it dried up and had a lot of blemishes on the wall .

so what i thought i would give it a second coat and it came out the same way . the best way i can describe it is if you look at a map of the world from out of space my blemishes look like all the countrys of the world , smooth in most places but marks in others

please help
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Postby stemac123 » Wed Nov 14, 2007 5:22 pm

hello rnd sound `s like you are working it before it drys heres 4 stages of skimming a wall

1 first seal the wall ... Brush the walls with PVA glue mixed with water to kill the suction about 2 or 3 coats

2. lay down your first coat (scratch coat) about 1 mm thick.. dont worry about blemishes at this time!

3. after about 5 mins put you second coat on about 2 mm thick

4. after about 8 to 10 mins as the plaster is going off take your trowel and wet it with a brush and start from left to right flattening down all the marks and filling the blemishes use the plaster what on your trowel to fill them and allway keep the trowel wet

5. "wet troweling it" as its going off ,,, get your brush and fick water on part of the wall and go along it with your trowel pressing hard to get any little marks out that are left

6 if needed repeat 5 again

7. dry trowel once it has gone off to get a nice smooth finish
stemac123
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Postby stemac123 » Wed Nov 14, 2007 7:24 pm

and allways use clean water and tools
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Postby Karen777 » Mon Jun 23, 2008 9:13 pm

Hello
Just picking up tips from previous postings... you say:

[quote="stemac123"]

7. dry trowel once it has gone off to get a nice smooth finish[/quote]

Might be a daft question but do you actually mean use a towel to dry and smooth the nearly dry plaster?? Or is that too literal an interpretation... I am not being funny, just trying to figure out why my plaster finish is patchy / blemishy

Cheers for any guidance,

Karen
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Postby Karen777 » Mon Jun 23, 2008 9:15 pm

[quote="stemac123"]
7. dry trowel once it has gone off to get a nice smooth finish[/quote]

Hello

Please can you tell me what is involved in the above step? And how you know exactly when to do it??
Cheers for any help
Karen
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Joined: Fri May 02, 2008 9:26 pm


Postby thedoctor » Tue Jun 24, 2008 5:15 am

See our projects section http://www.diydoctor.org.uk/projects.htm and go to projects on plastering in general and top coat plastering. All the info you need is in there plus the availability of plastering courses.
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Postby stemac123 » Tue Jun 24, 2008 11:17 am

[quote="Karen777"][quote="stemac123"]
7. dry trowel once it has gone off to get a nice smooth finish[/quote]

Hello

Please can you tell me what is involved in the above step? And how you know exactly when to do it??
Cheers for any help
Karen[/quote]


[b] in the stages of drying process from your first coat to your second coat
the dry troweling is useing your trowel no water, when the plaster has set,
dry troweling it, gets a smooth finish
before this stage your plastered wall should be smooth and free from
imperfections

i can give you a link on all the stages of plastering a wall but am not sure you can
do this on this forum[/b]
stemac123
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Postby Karen777 » Tue Jun 24, 2008 7:15 pm

Stemac123 and thedoctor
Thank you for your help.
I will take a look at the projects page and would be happy to give you my email address for any link to the stages of plastering.
Thanks again
Karen777
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Joined: Fri May 02, 2008 9:26 pm


Postby stemac123 » Wed Jul 02, 2008 3:57 pm

yeah sure Karen777 il be happy to send you the links :-)
stemac123
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