I have an external wall that forms the boundary of the yard. It is in a rather scruffy state and the pointing needs doing.
Ideally Id like to render and paint it, but if I render it, do I need to do the pointing as well?
Also, presumably the render cant go below the damp proof course, so how do you finish the area below there?
You need bell beading to go along the bottom (dpc) which will form a
Below this level, I normally paint with black bitumen paint.
Don't render it while there's a chance of frost, or if there's frost still
in the wall....you don't need to point it as the open joints will act as a
key for the render, which will need doing in two coats
Pointing is not recommended while there is frost about for the same
reasons you don't render when there's frost about. You don't do anything
involving any cement based product when it's freezing unless it's an
emergency, you know what you're doing and have the right additives
sorted out, and even then it's accepted that it will be a temporary job,
to be re-done when the temperature rises.
On the basis that freezing any cement products before they have fully
cured is a bad idea, slapping render onto a wall which already has a
core at -1 will, surely make it more likely than ever to freeze before
achieving full cure? Especially as curing itself is slowed a lot by
Maybe it would not be so important if you knew for sure that the curing
period was going to coincide with a steady increase in temperature. But
most of us don't.
That might not strictly be an answer to your question, but sure as hell,
I wouldn't render anything in near-freezing conditions. With or without
additives to prevent freezing.
A slab will be producing some heat due to the exothermic processes. The
thinness of a render makes that ignorable.
I don't trust the weather forecast that much.
Several cement companies suggest not rendering when the environment is
under 10 C.
Anyway, I said "I wouldn't ..." which would indeed be my choice. At
least partly because I don't fancy freezing while doing it.
Jim's being argumentative because in a different thread, he said he thinks
that charging a customer for 2 bags of plaster @ £4 each is a rip off,
wheras plasterers should charge them upwards of £200 for extra labour
ho ho ho tis the season!!
ISTR in said plastering thread you couldn't offer any rational reason
for your "pro guide" of taking a flat smooth plasterboard wall,
f**cking it up by slapping 1 coat of plaster on it "any old how" then
slapping another coat on to "smooth it out again".....
where is the logic in that? apart from making more work for dodgy
plasterers & halfwit billduhs?
Clearly you don;t know why- you just shout "its da way we always dun
it guv" and appear unable to apply any logic to what you preach - same
thing with the cold wall shit - your "reasoning" is just regurgitated
BS tripe as far as I can make out - were you appprentice "trained"
E.g. How TF would you know if the core of a wall is frozen?
Last time I had any significant plastering that was done by a friend at
a very good price. He did two coats of board finish. He could easily
have done one coat if he thought it better/the right approach.
Last night was a bit parky, better check the wall temperature with my IR
You obviously missed, couldn't understand or completely ignored this message
in that thread:
I've been plastering on and off for 30 years and I know that it takes twice
as long to get one coat flat than it does with two coats, everyone else
knows this too, so this is what they do, you don't have to if you don't
want, and if you've only got a few patches to do, then it's fine to do it in
one, but when you've got several rooms and ceilings to do, or even full
houses, everything gets two coats, it gives you more time to first coat new
mix 1 - first coat a ceiling
mix 2 - first coat 2 walls in a different room
mix 3 - second coat ceiling and first coat another wall
mix 4 - second coat first two walls
mix 5 - second coat third wall
and so on
So you plaster one wall with one coat, stand around waiting for 30 minutes
for it to become ready for trowelling, trowel it up, then repeat for the
You can't get a second wall on while the first is going off, and moreover,
if you did, the 2nd wall would be rock hard by the time you'd trowelled the
So in a day you might get four walls done - bravo - you've saved four quids
worth of plaster - you can go and spend it on some frostproofer, while
anyone who has plastered before will have done two or three rooms
It's likely to be still frozen if it's been below zero for a week and only
above zero for a day or two, like it had when the OP suggested rendering his
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