Air bulbs MP 75

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g_landboy

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I just start to paint my house with knauf MP75 and I saw some air bulbs which are created immediately after spraying MP75 on to brick / concrete wall, I asked guys which are spraying it they say it happened because of low water pressure. Anyone knows what should be water preasure (BAR) on spraying machine?
Does anyone have any clue why??
 
there feeding you porkys, mp should be around 700 to 800 depending on the machine. if the mp has been finished and has air bubbles then there not hard troweling for a start.
 
it is G4 machine
simplybesty said:
there feeding you porkys, mp should be around 700 to 800 depending on the machine. if the mp has been finished and has air bubbles then there not hard troweling for a start.
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Yes we found blocked pipe with dust on G4 spray machine, after removing dust we got pressure up to 700, but guys are still getting this air bulbs after spraying MP75 in to the wall.
 
g_landboy said:
Yes we found blocked pipe with dust on G4 spray machine, after removing dust we got pressure up to 700, but guys are still getting this air bulbs after spraying MP75 in to the wall.
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Are you doing the spray yourself ??? ???
 
you sound like a bobski trying to do a job you have no idea of ::) yeeees i do de spray plaster painting thingemebobski
 
Take it easy guys :-\ I don’t have no clue about plastering I just hired a plastering company ( 4 Euros per m2, "pros" they say) to plaster my hose but these guys don’t know English so I thought to track for this air bulb issue through internet although guys are removing air bulbs after while but I thought to ask if anyone who is familiar with MP75 to tell us is there any possibility to not get this air bulbs at all.
Soon I will attach pick of my house plastering
THANKS VERY MUCH FOR YOUR REPLAY
 
gladly ;)...........what prices are you getting for mp75? is this the spray rule finish ?.....it cant be 3 quid a metre can it hardwall and sets 7 quid ???
 
i got offered some mp finish to do earlier in the year at £2.50/mtr so mp75 must be quite a bit more ??? ???
 
sorry mate i meant 7 quid if youre going direct ........i thought you lads might be going direct rather than subbies
 
my mates got a big hardwall job starting october in roehampton think he's paying 6.00m2 anyone want his number pm me southwest london on the a3
 
they work really well on hardwall mate , never used tough coat tho but it cant be that different .
 
how are they better than a poly float church i supose i should just stop being tight an find out for myself haha
 
spunky said:
gladly ;)...........what prices are you getting for mp75? is this the spray rule finish ?.....it cant be 3 quid a metre can it hardwall and sets 7 quid ???
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I pay 5.4 euro per MP75 bag and in 4 euro price it is included finishing MP75 also they will paint it complete my house about 1000 m2.
 
napper83 said:
how are they better than a poly float church i supose i should just stop being tight an find out for myself haha
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not sure why they are better mate just seems to glide over it better and closes it in more , just get one if you dont like sell it to spunky he'll buy it of yer
 
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