Spraying exterior paint

leveller2911

keystone wrote: »

Four reasons two which I can see have been hightlighted already but for completeness:

1. You cover everything in the vicinity to a greater or less extent with paint
spatter.

No different than using a roller.Sheet up the ground and either mask any windows or spray as close as possible and cut in with a brush roller.

2. When you first paint any masonry surface (brick, block, pebbledash, spardash
even plain smooth render) you need to use a brush to work the paint into all the
little holes and crevices that are undoubtedly there. Even a roller won't fill
them - well it would on smooth render). Yes you will wreck the brush.

Even more of a reason to spray if there is a large area of surface.Spraying will go further into a hole than a brush would.

3. If using masonry paint (which I presume you are) then you will have to thin
it to a great extent so that it doesn't clog the sprayer.

Trick is getting the correct pump that will take textured paints



I would def recommend looking into an airless pump.LIR would still need to do the preparation work before spraying but that needs to be done whatever method is used. Ideal time of year to spray outdoors. Calm day and warm weather for the paint to dry.:dance: Jobs a gooden and finished in time for lunch

keystone

leveller2911 wrote: »

No different than using a roller.Sheet up the ground and either mask any windows or spray as close as possible and cut in with a brush roller

If thats the case then your'e not vvery good with a roller or using the wrong sleeve. . Anyway I'm not just talking about the immediate area. Sprayed stuff can and will go many many metres.

Even more of a reason to spray if there is a large area of surface.Spraying will go further into a hole than a brush would.

I think we have to seriously disagree on that one unless you are proposing spraying from less than 3 or 4 inches away. Then you will get horrid runs which you will have to deal with.

Trick is getting the correct pump that will take textured paints

and the spray head and then theres all the pipework.

Cheers

jcb208

leveller2911 wrote: »

Not true, it depends on the type of paint used.With some pumps you can spray textured paints and even a type of plaster for walls. A pump will fill holes as good as any roller and if the holes are anything larger than about 8mm they would need filling first.

Airless pump is needed (very little overspray unless it blowing a gale). and not HVLP which sprays a very fine coat of paint with lots of overspray .

I spray a mist coats on 5000 - 8000 square foot house all the time internally on plaster and finish ceilings with a airless machine.The garage walls which are usually thermilite with holes in them never come out well and end up with a roller to work the paint in to the block.yes it will work if the block is smooth.For masonry you will need at least a 21 tip and 1500 PSI depending on how much you thin other wise the tip will just clog and the paint will come out at a fair old rate
No way would I spray externally the over spray can travel a long way In the wind,

RichardD1970

We have just sprayed the front of our house, some unpainted brick and some previously painted uPVC cladding.

I bought this, and it worked really well, used Weathershield smooth exterior paint diluted by 10%.

Once I had figured out the correct settings for flow rate etc, there was very little over spray. Yes we did mask off lots and ensured that next doors were well protected (wife was a bit paranoid about it )

Did two coats and even on the bare brick work it looks really good and used less paint than we thought. Even took 1 tin back to B&Q and got £30 refund :T.

lostinrates

The only issues really worrying me arising from this are whether the spray will actually work. I had presumed it work be the most effective way of getting into the holes tbh.

Apart from our house and so e other old buildings there is nothing to worry about paint getting on , we can put cars in a barn and close doors. We really are a long way from any thing else. Obviously. Our house getting covered doesn't appeal though.

leveller2911

keystone wrote: »

If thats the case then your'e not vvery good with a roller or using the wrong
sleeve.

.

I dislike painting with a passion so I'm not gonna argue with you there..:D

Anyway I'm not just talking about the immediate area. Sprayed stuff can
and will go many many metres.

Even on a calm day?. I agree it would be the case with HVLP but not airless.The immediate area would need protecting but LIR has already said thats not a problem.



Pipework would need protecting but if there is enough sq metres of painting to be done then surely its worth it.Only has to be masked up once.

leveller2911

jcb208 wrote: »

No way would I spray externally the over spray can travel a long way In the wind,

I did mention spraying on a calm day , bit of common sense and I'm sure LIR could do it.

The guys I worked with used Graco airless machines and it looked really good.Paint is still on the walls , they did have plenty of old dust sheets and masked up rainwater goods.

I'm looking into supplying my Joinery finished coated but I need to sort out a spray booth, was hoping to use air-assisted airless but it seems I would need to go down the HVLP route.

leveller2911

lostinrates wrote: »

The only issues really worrying me arising from this are whether the spray will actually work. I had presumed it work be the most effective way of getting into the holes tbh.

Apart from our house and so e other old buildings there is nothing to worry about paint getting on , we can put cars in a barn and close doors. We really are a long way from any thing else. Obviously. Our house getting covered doesn't appeal though.

LIR give these people a ring and ask their advice.

They hire nationwide and although I haven't dealt with them personally its only the cost of a phone call..

http://www.spraydirect.co.uk/acatalog/servicing_maintenance_product_hire.html

lostinrates

Thanks leveller.

We did brush a corner this morning. We used three litres of paint on a tiny, tiny area. . Does look good though. Wanted to get that corner done before fencers are in this week.

keystone

leveller2911 wrote: »

I dislike painting with a passion so I'm not gonna argue with you there..:D

Even on a calm day?. I agree it would be the case with HVLP but not airless.The immediate area would need protecting but LIR has already said thats not a problem.

Can't argue with that except I've never seen a completely calm day and as you say LIR says no problem.

Pipework would need protecting but if there is enough sq metres of painting to be done then surely its worth it.Only has to be masked up once.

Sorry my fault for poor explanation. I meant the internal pipework in the machine

Cheers