Spray Painting a Rough Cast House

[firebladerrw]

Evening folks,

I'm looking for some advice:

I've a fairly large 4 bedroom house, thats about 22 years old. Like some of the houses in my area (West Scotland), the rough cast is looking tired, and on some walls it has a 'Red Moss Lichen'. I also have a render repair, so I'd like to paint the outside.

I've already sprayed the outside with anti-fungicide wash. I used a 1.5HP/200L SIP compressor with a standard paint spray gun - worked remarkably well.

I've done a small test area with a masonry roller, and came to the conclusion it would take me a very long time to do all the walls, so I'm exploring the possibilities of spraying it.

I know about the problems with over spray, time to mask etc, however if I could use a spray gun, I think it would save me days of work (or paying someone !)

As I've already got a decent compressor, I've researched the market and found these masonry spray guns:

http://www.diy-compressors.com/cata...d=212&osCsid=0590e07de7f9b393ca2a8ba8270546bd

http://www.spraydirect.co.uk/acatalog/kestrel_kes-a7016_texture_spray_gun.html

http://www.machinemart.co.uk/shop/p...ath/spray-guns-spraying-equipment-air-brushes

The last one doesn't particularly mention masonry paint, so I guess the first one is the only one to try.

So the question is, has anyone got any experience of this equipment?

Thanks in anticipation

 

[powerpainter]

Only just seen your post, so maybe you have found the solution? If not, I can help. You need to use an airless paint sprayer which pumps the paint along at up to 3,300 psi. An airspray gun (that uses compressed air) will blow most of the paint away from the wall, and because this type of paint is fairly thick, most airspray guns won't spray it. The masonry paint needs to be the "smooth" type (most are these days). The sprayer needs to be able to support a spray tip (nozzle) up to 23 thou' (0.023")