Render Finish for New build

BarneyMc · 19-02-2014 02:06PM

glashanator wrote: »

Hello Barney once again.

A couple of close up pics of chimney to give you an idea.

And the strip between the 2 roofs as well.

Sand cement was mixed at ratio 7/1 , sand/cement and a small amount of mortor mix. No water proofer or Lime was added in final coat, only in scratch coat.

Hi Glash,thanks very much for taking these pics - render looks great! When do you think you'll have to paint this and how often thereafter?

glashanator · 19-02-2014 02:21PM

Haha....

This may be the ironic part. I'm a painter and decorator/spray painter by trade.And thats exactly why I'm doing this way... so i don't have to... your own jobs always get done last , right?

Anyways......Once you start to paint exteriors,you'll always have to. Paint by its nature degrades fairly quickly in our climate. 3 years is all you really get nowadays, 4 if you're lucky.

This finish would last 5 years easy with no maintenance. I think 10 or more with a little maintenace. But i think eventually you'd have to paint it to protect it from our climate.

What do I mean by maintenance?

Definitely getting out the powerwasher once a year to wash all the grime and dirt that will ultimately gather on it.
Be prepared to use agricultural bleach to kill any algae, or especially that horrble red growth that comes on windy/wet gables of houses... And again , powerwash that off to not leave any detergent on the house.

Hope this helps.

BarneyMc · 19-02-2014 10:05PM

glashanator wrote: »

Haha....

This may be the ironic part. I'm a painter and decorator/spray painter by trade.And thats exactly why I'm doing this way... so i don't have to... your own jobs always get done last , right?

Anyways......Once you start to paint exteriors,you'll always have to. Paint by its nature degrades fairly quickly in our climate. 3 years is all you really get nowadays, 4 if you're lucky.

This finish would last 5 years easy with no maintenance. I think 10 or more with a little maintenace. But i think eventually you'd have to paint it to protect it from our climate.

What do I mean by maintenance?
Definitely getting out the powerwasher once a year to wash all the grime and dirt that will ultimately gather on it.
Be prepared to use agricultural bleach to kill any algae, or especially that horrble red growth that comes on windy/wet gables of houses... And again , powerwash that off to not leave any detergent on the house.

Hope this helps.

Ahhh, they don't call you the glashanator for nothing! :P

Having to pain the house every 3-4 years would sicken me. Is there anything else out there that would last for years without having to paint?

baby fish · 19-02-2014 11:50PM

@Glashanator

I've been told that its best to leave external plaster for 5 - 7 years before painting it because if its painted within the first few years the paint can flake off overtime. apparently because there is some sort of reaction between the lime and cement going on for a few years

Any truth behind this? How many years would you recommend to leave it before painting

Is there some kind of primer for new plaster?

glashanator · 20-02-2014 01:20AM

baby fish wrote: »

@Glashanator

I've been told that its best to leave external plaster for 5 - 7 years before painting it because if its painted within the first few years the paint can flake off overtime. apparently because there is some sort of reaction between the lime and cement going on for a few years

Any truth behind this? How many years would you recommend to leave it before painting

Is there some kind of primer for new plaster?

@Babyfish

I'd agree with this to a certain extent, but its def not 5 - 7 years. More like 1 year or max 2 years. You'd def be good to paint after 2 .. But I'd totally agree that the house should be let weather before painting. We've all seen the Celtic tiger houses thrown up ,plastered, and painted within a month.The paint seldom stays on. And is very hard to rectify there after.

Efferesence is a big problem in Irish exteriors. Efferesence is basically a "salt" coming to the surface. Its the white residue you often find under your window sills. I'd assume the salt comes from the the sand used while sand & cementing.

A watered down 1st coat is the accepted way to go.

My personal preference, but is not a primer as such, is stabilizing solution.

Stabilizing solution is clear liquid you put onto any precast concrete(window sills , Kerbing) before painting. precast concrete doesn't hold paint well as its too smooth. Stabilizing solution basically gives a great base to paint onto there after on most surfaces, and is many many times more durable than any paint I know of bar 2 pack and marine paints.

Can add to cost of painting a house but without doubt paint job will last longer. you only have 1 chance to do it though and thats onto the sand and cement before any paint is introduced.

glash

kkelliher · 21-02-2014 08:51PM

sydthebeat wrote: »

monocouche render all the way

Worst product ever introduced in ireland without a shadow of a doubt.

Cant be repaired
Very difficult to clean
No suitable for moist climates
allows easy mould growth
Stains easily
Oh i could go on, should come with a health warning as many buildings built during the boom will show

wirehairmax · 22-02-2014 01:34AM

Agree with everything kkelliher said. Its a crap product. I've seen it and had to use it on many buildings, houses, hotels, shopping centres, apartments etc and never once have I had a finished product that I've been 100% happy with.
The closest I've come to being near satisfied with this stuff was when the building was scratch-coated before applying the monocouche which totally defeats the theory and intended purpose and application of the name and product. I always advise people now to stay 100 miles away from it if they can.

BarneyMc · 22-02-2014 09:12PM

I've come to the conclusion that a finish that never needs painting is the way to go. Does the granite chip dry finish meet this requirement? I think another poster said it didn't really suit a rural settings but I think I could live with that. Does anyone have this?

Dubl07 · 22-02-2014 09:18PM

BarneyMc wrote: »

I've come to the conclusion that a finish that never needs painting is the way to go. Does the granite chip dry finish meet this requirement? I think another poster said it didn't really suit a rural settings but I think I could live with that. Does anyone have this?

I loved prying the chips of granite out of my great-grandparents' walls as a kid. So did my cousins.

BarneyMc · 23-02-2014 05:14PM

I've come across these 2 types of dry granite finishes - see attached images. Has anyone these on their house and if so are they happy with the finish and how it has weathered? Thanks.

declan52 · 23-02-2014 09:54PM

BarneyMc wrote: »

I've come across these 2 types of dry granite finishes - see attached images. Has anyone these on their house and if so are they happy with the finish and how it has weathered? Thanks.

I am putting the silver granite on mine. A few houses near me have it and it seems to weather pretty gd. Obviously depends on how well it was put on. There is a sparkle of it when the sun hits it really nice looking comes from silca grains in the mix. Am pairing mine with silver and gold quartizite Stone. the pics you have are from the <snip> have a look. Based in <snip>

Slick50 · 25-02-2014 09:46PM

BarneyMc wrote: »

I've come across these 2 types of dry granite finishes - see attached images. Has anyone these on their house and if so are they happy with the finish and how it has weathered? Thanks.

Just one point re: dry dashing, as opposed to a nap finish. The render used to hold the dry dash is the same render you would use for a nap finish. It is just render with a colour through it, which is the only reason it doesn't need painting, and really never should.

BarneyMc · 25-02-2014 10:32PM

Slick50 wrote: »

Just one point re: dry dashing, as opposed to a nap finish. The render used to hold the dry dash is the same render you would use for a nap finish. It is just render with a colour through it, which is the only reason it doesn't need painting, and really never should.

So nap should never need painting if it has a colour through it?

Slick50 · 25-02-2014 11:19PM

BarneyMc wrote: »

So nap should never need painting if it has a colour through it?

No more than any dry dash, it is the same material. I would recommend adding waterproofing through it, it is less absorbent then, so less likely to discolour/grow mould. Strong colours would fade over time, but white sand, cement would change very little, imperceptably unless you put fresh render beside it.

BarneyMc · 26-02-2014 09:45AM

I've seen nap finish with sort of cracking effect... not sure what it is but it's probably crying out for a paint job. The house is about 8 years old.

One big disadvantage I see with a granite dry dash is the fact that you can't power hose it to get rid of any discolour/mould.

I'm coing to contact a company who supply the dry dash and see what they say.

Slick50 · 26-02-2014 09:44PM

BarneyMc wrote: »

I've seen nap finish with sort of cracking effect... not sure what it is but it's probably crying out for a paint job. The house is about 8 years old.

One big disadvantage I see with a granite dry dash is the fact that you can't power hose it to get rid of any discolour/mould.

I'm coing to contact a company who supply the dry dash and see what they say.

The two most likely causes of cracking are, drying out too quickly, or the finish coat not adhering to the scratch coat properly, usually caused by a poor scratch coat. If you see anyone using a stick with a few nails in it, to make a few scratches on your walls, run him off the site.
If you are cleaning down the outside of the house, you are better off not using the power hose too vigorously. There are plenty of chemical treatments you can use to do the hard work, then just rinse off with the power hose well away from the surface

BarneyMc · 26-02-2014 10:40PM

Slick50 wrote: »

If you are cleaning down the outside of the house, you are better off not using the power hose too vigorously. There are plenty of chemical treatments you can use to do the hard work, then just rinse off with the power hose well away from the surface

Can you do this with the grey granite dry dash finish, i.e. apply chemicals and then take it very easy with the power hose?

Slick50 · 27-02-2014 01:52AM

BarneyMc wrote: »

Can you do this with the grey granite dry dash finish, i.e. apply chemicals and then take it very easy with the power hose?

I'm sure you can, but I cannot predict the results, as it will depend on so many variables. If it is a well done job, it shouldn't be a problem, but you will still lose a certain ammount of stone.

Gmmc · 06-03-2014 05:44PM

Hi all

I have just come across this discussion and we too are deliberating over render at the minute!
Our build is in the sperrins( derry side for some followers!) and the slates started going on this week. Windows are ordered so the builder (my uncle) wants us to decide on the render finish.
I like the smooth finish white render that quite a few of you seem to have while my husband would go for a grey colour.
My uncle recommends a wet dash that could be painted or left grey as it is and he sees this on a house he built 25 years ago and it still looks like it did then!
The architect isn't overly keen on a smooth sand cement finish as settlement cracks can be an eyesore esp on front elevation. He agrees that a wet dash camouflages these better.
For a smoother finish he says to go for k-rend which is obviously more expensive and one we would likely avoid.
My query is a wet dash really very pebbled looking as i don't what this at all?!
Barney, the pictures you had of the dry dash attached in the grey look not so bad and we actually found that website last night!
Would the wet dash look similar?
Barney did you make a decision out of interest?
Any thoughts would be greatly appreciated.

Thanks

I'll attach a few pics of the build at diff stages.

declan52 · 06-03-2014 05:52PM

hi Gmmc i was actually at the suppliers of the dry dash yesterday. They have maybe 20 panels with different stone, different sand and different cement used. They are pretty close to you in coal island . Mods sometimes remove place name so pm me if its removed. I am going for a dry dash but after seeing the panels i have changed from the pearl grey to the 6mm silver granite dash. The wet dash is just slap dash and it is probably the best way to seal an outside wall plaster wise. Never really cracks or discolours. By the way your build looks pretty tasty. Some view out over the mountains to look at from your site.

BarneyMc · 06-03-2014 06:45PM

I haven't made a decision on the render yet folks. I might try and head up to the dry dash suppliers at the weekend (I live in Monaghan so not too far to go).

I haven't ruled out the wet dash either. I know what you mean Gmmc, it can look very nice in a rural setting. I just wonder how long it would last before paining is required... if ever?

Gmmc · 07-03-2014 11:39AM

declan52 wrote: »

hi Gmmc i was actually at the suppliers of the dry dash yesterday. They have maybe 20 panels with different stone, different sand and different cement used. They are pretty close to you in coal island . Mods sometimes remove place name so pm me if its removed. I am going for a dry dash but after seeing the panels i have changed from the pearl grey to the 6mm silver granite dash. The wet dash is just slap dash and it is probably the best way to seal an outside wall plaster wise. Never really cracks or discolours. By the way your build looks pretty tasty. Some view out over the mountains to look at from your site.

Thanks Declan52!
We must check the panels out then. Didn't think render would be as difficult to decide on!

BarneyMc · 07-04-2014 02:12PM

Has anyone gone ahead with any of these dry dash renders yet and if so have you any photos you could share?

The nicest ones I've seen (on the display panels) was the perarl grey marble and silver granite.

thatslife · 14-04-2015 01:11PM

BarneyMc, what did you use in the end??

BarneyMc · 14-04-2015 01:23PM

In the end I went with pearl grey - that's life I guess!

thatslife · 14-04-2015 03:15PM

Cool thanks. I'm looking for something permantently white. Monocouche is getting some mixed reviews but leaves a crisp finish. Not sure. thanks anyway

BarneyMc · 14-04-2015 03:31PM

thatslife wrote: »

Cool thanks. I'm looking for something permantently white. Monocouche is getting some mixed reviews but leaves a crisp finish. Not sure. thanks anyway

I would be weary of monocouche - looks terrible after a few years.

Good luck in finding something that'll stay permanently white by the way :pac:

I'll post a pic of my render when I get a chance.

thatslife · 14-04-2015 03:34PM

Do, thanks.

sydthebeat · 14-04-2015 04:57PM

BarneyMc wrote: »

I would be weary of monocouche - looks terrible after a few years.

Good luck in finding something that'll stay permanently white by the way :pac:

I'll post a pic of my render when I get a chance.

just for balance, i know of monocouche applications that look as good today as they did the day they were applied (8 years ago at this stage)

i think location has a big factor in how it weathers

thatslife · 15-04-2015 09:54AM

On room to improve a couple of months back, it was renovation to a rural 80's house in baltinglass. It was red brick. But they added a toothpaste like render to the brick and finished it off with float. i'm nearly sure this is monocouche. ?? it looked really well when finished. Syd is this the same stuff?

Render Finish for New build

Comments