Parex Mono

Status
Not open for further replies.
BigK

BigK

Private Member
Hello Fellas, new to this forum, have a house to price (looks like I'll be doing it) and he wants it doing in parex mono. I've never used this gear, what's it like? Have only used K-rend before, Any difference? I'll be hand applying (hard work I know) but the house is built with polystyrene block which are concrete filled and I've never worked on them either!! Would the parex system be similar to k-rend using hp12 and the metre wide scrim as I call it?? And then top coat the finish?
Looking forward to replies many thanks in advance!!
 
The 'polystyrene' blocks as I called them are Durisol, apologies for the layman terms.
 
ive used the blanc du litteral (spelling?) and found it easier to rule thank k rend this was hand applying though
 
theres a bit of a differance between durisol blocks and polystyrene blocks.

If its dursol you will have a spec drawn up for you. The system has full bba aproval but they still stipulate a full mesh tv 10 in your first pass of render over the whole substrate. I take it you are not approved to use parex systems to issue a warranty for the application [which durisol will stipulate in there warranty as a whole]. It will be a learning curve for you as they are strange to render over, no suction etc.
you dont need a scatch coat such as k rends hpx prior or parex's equivalent , but again you should have a spec drawn up for it to follow,

where in uk is the project, if its in the north, I will know the site.
 
Will confirm tomorrow morning owls on whether its Durisol or not, but ATM am fairly confident it is, on speaking with parex I'm am being led in the direction of monorex, which as you say is done directly onto Durisol in two passes with tv10 bedded in first complete pass??
It is a private build in Ireland owls, but there is a small development in the north that is starting this year which you will probably know about in due course....
Are there any 'niches' you could inform me of when using the stuff? Do you close it in with straight edge or leave it slightly open for example, on smaller operations I used to float the k-rend as it left it really nice for scraping, any tips for me?

Many thanks fir the replies
 
yes durisol will only allow parex to be used on there systems either standard monorex or the gf whch is a finer grade.

we use a machine, give it a first pass bed the mesh in that. then another 10mm on that rule it with the h bar then run the spat over it, same as a k rend applicaton really, just a different setting time with monorex.if you can apply k rend, monorex is a similiar idea.
 
Whilst I have you here owls, lol, what is the scenario if they are not Durisol? What system are we then onto? Loving this site!
Where are you based owls?
 
Oh, and what sort of labour price are they paying for mono in the north nowadays? The last time I was there ( a long time ago) we were getting a tenner!
 
BigK said:
Whilst I have you here owls, lol, what is the scenario if they are not Durisol? What system are we then onto? Loving this site!
Where are you based owls?
Click to expand...

just depends what the system is doesnt it.
north yorkshire, skipton/ harrogate way.
 
BigK said:
Oh, and what sort of labour price are they paying for mono in the north nowadays? The last time I was there ( a long time ago) we were getting a tenner!
Click to expand...

we dont talk about rates on an open forum, its considered poor form dear chap,
but i will say more than a tenner.
 
Apologies about the request for prices as I said I am new!!
Tis a small world owls, im about 20 mins from colne, the other way, brother was village bobby in Gargrave
 
No, live in Ireland presently, although I do nip back 'home' to do an odd job here and there fir old friends and work contacts, my brother used to be village bobby in Gargrave, knew it wouldn't be far from you, I'm from other side of colne near Burnley
 
Bigk durisol is not like icf - icf is a double skiin polystyrene with a concrete pour in the middle, you wouldnt use monorex onto this.

Durisol is a reconstituted semi wood block that is usually filled with insulation in the middle. monorex will do as OWLS has pointed out already there for you.

crumbs i nearly broke one of my rules there. close.

agh ha hem, expect to earn big money its a specialist field with big rewards

close the mono down with a spat after all your ruling etc, dont leave it open/dragged or else you will find it difficult when scraping back
 
Last edited:
plasterjfe said:
Bigk durisol is not like icf - icf is a double skiin polystyrene with a concrete pour in the middle, you wouldnt use monorex onto this.

Durisol is a reconstituted semi wood block that is usually filled with insulation in the middle. monorex will do as OWLS has pointed out already there for you.

if you sub on site round the north west now you will find that nothing has changed much to what you mentioned from a rendering firm. some firms you wont even get that.

close the mono down with a spat after all your ruling etc, dont leave it open/dragged or else you will find it difficult when scraping back
Click to expand...

durisol is concrete in the cavity also,
i do plenty of them with my machine, 90 slump 7mm grain to fill all the voids within the substrate.
 
i know what your saying, got offered a load over my way near leeds at 11 quid a metre, so that offer went in the bin.
 
Thanks for the replies looked into it today and found out it's amvic block, so I'm on a whole new spec' which is top coated with EHI, an acrylic. I'm currently awaiting a spec from Parex, but has anybody done this system before? Can't foresee too much trouble following the spec but lord knows how I'm going to price it!!!! The client just wants me to do the job.....

Any help in laymans terms?
 
We do it yes

amvic is ICF like i said before, it wont be ehi then acrylic - they are two separate coloured finishing renders. it could be, maite basecoat with mesh and combed/scratched coated then when dry monorex EHI over that, or it will be maite basecoat smooth finished with acrylic coloured top coat over that.

depending on the quality of the ICF kit you may need to add 1 extra layer of EPS at 25mm first (some kits are pi55 poor)
 
Thanks, yeah sorry I wasn't too clear, I meant that EHI is acrylic based, It will be the monorex version, so labour wise, would it be of similar to using the hp12 with mesh and k-rend top coat? Or would one or the other consume more labour time?
 
no its not.

if they want EHI mono with a scrape finish then it will be maite basecoat with mesh scratched comb horizontally and left to dry. the ehi will then be applied after that and scrape finished as usual ,
 
Cheers plasterjfe, in fairness it was the merchants that said that and not parex, and as we all probably know, half of them don't know what they are selling!
Is it roughly the same as the k-rend basecost/ mesh system labour wise then?
 
The regular scratched monorex finish onto block work is 18mm knocked back to 15mm. To achieve the same finish on polystyrene you need to use a 5mm coat of maite with mesh left with a combed finish left to dry. Then a 13mm coat of ehi knocked back to 10mm. We'd machine the 13mm on but for hand whatever was comfortable ie one or two passes. Personally Im dubious about the scratched finish onto polystyrene. For a start it would get dirty in no time, would not take a knock very well and any cracks would stick out like a sore thumb. If it was my house I'd go for the ehi roughcast(spray textured) as it doesn't get dirty due to skin not being scraped off and would be much more forgiving to any cracks or scuffs. Or the dpr finish in the coarse grain. But hey give em what they want init, good luck
 
its the same approach as a krend method ie base/mesh scratch coat then topped out with mono - however i am yet to see a krend base that i personally would be happy applying over eps, the parex base is far superior a product in that respect
 
all the products i have used/seen have either less polymer, flexibility and bonding capabilities than Parex maite orr Knauf Marmorits sm700.
All the others seem more like improved masonry mortars, if you wait when dry and push your thumb into them they crumble also you can rip the mesh clean off if you tug it - this will not happen with the other two.

not saying they aint good enough for BS or regs but if it was my own house there would be no decision to make
 
do krend even do a base they spec for eps ? in a krend bag ?

I hear now they are going down the silicone texture road that they are working on a basecoat for thin coat over insulation.
 
Status
Not open for further replies.

Share this page

Back
Top