Who sells the cheapest good quality magnolia exterior masonry paint at
present? (That is to say, at which well-known builders' merchant or DIY
I need about 20L, and was shocked to find that my local Jewsons' is
charging about 22 for 7.5L (and that was a special offer)!
PS... I'd like something that will do the job in one coat. The walls have
been painted magnolia before, and the paint is sound,; it's just got
discoloured by the usual green stuff and black stuff that typically grows
on exterior painted walls after a few years. Should I treat those areas
withy bleach or anti-fungal spray, or can I just paint over them? The
growth is very thin indeed.
You might find that water jetting is all it needs.
Be carefull, not to strip the paint off by standing too close.
I wash my house down once a year with the pressure jet machine, paint comes
up like new.
I have the smooth finish, dunno how you would go on with the non-smooth
You will definitely need to clean off any algy and treat with anti-fungal
stuff before you paint in the event it does need painting. BTW, the
anti-fungal stuff you by is better than bleach.
firstname.lastname@example.org (Andrew Gabriel) wrote in writes:
Thanks to everyone for the replies. I appreciate the tip about pressure-
washing. I will do that. I'd still like to repaint, because previous
repainting has been done in patches, and the colour is not quite uniform
There is also a long (thin) crack stretching from soffit to the ground,
where the rendering of the extension meets the rendering of the original
house. I once tried covering and filling it with masonry paint, but it
reappeared. So now I'm considering using a 1" strip of fine glass fibre
chopped strand surface tissue (as used in grp), embedded within the paint
layer. Has anyone tried anythingthing like this?
Oh dear, is the render still sound either side for a foot or so and
full length of the crack? If you tap it gently with a small hammer
does it sound "solid" or "hollow"? Hollow means the render at that
point is no longer properly bonded to the wall.
Think I'd rake the crack out to 1/8" to 1/4" wide almost full depth
of the render and fill with a fine sand and cement mix. Depending on
the surafce finish of the existing render that might be invisible
once painted. I supect that a bit of glass tissue paint bonded on
will always be visible as a strip.
The rendering sounds solid. Looking at it, it's not one single crack
runnung from top to bottom, its a number of long hairline cracks that don't
quite meet up. They really do look as though paint should be enough to
cover them over. I think I'll try applying a thincker coat or several coats
over the crack and I think that should do it. They are only hairline
cracks, but they do look as though they are cracks in the rendering -
presumably due to contraction, either due to drying out or...something
else! It's where a block-build extension meets a solid stone part of the
house. It was done 25 years ago, so I'm not too worried about it. There'so
sign of any real problem peyond those those hairline cracks. I suppose it's
only to be expected that on old 1850s solid stone building is going to move
and expand differently than a modern cavity wall extension.
Thanks for your input though...
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