re - rendering old farm house

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ajackson

New Member
going to render a farm house when the weather gets better. before putting the scratch coat on want to make sure that it gets a good bond what we would normally do would be to put a slurry mix on just wounderd if putting a splatter dash is any better? cheers.
 

henry

Private Member
a splatter coat would be good and you going to two coat aswell or just top off on your splatter coat.
 

henry

Private Member
yes I would put sbr in the splatter coat . Render Systems what is the difference in setting times of nhl limes then use of cement. in rendering.
 

jack88

Member
s&c will damage the building fabric over time!!..u should be using either a nhl 3.5 or non hydraulic system with added pozzolan..depending on how dense or soft the substrate is..for a soft stone or old fired brick use non hydraulic system for a more solid sub use nhl...for nhl 3.5 ur looking at around 4 days for the scratch and 4 days for the float for the initial 'set' that is...it continues carbonating for months after...
 

spark2010

New Member
s&c will damage the building fabric over time!!..u should be using either a nhl 3.5 or non hydraulic system with added pozzolan..depending on how dense or soft the substrate is..for a soft stone or old fired brick use non hydraulic system for a more solid sub use nhl...for nhl 3.5 ur looking at around 4 days for the scratch and 4 days for the float for the initial 'set' that is...it continues carbonating for months after...

it does...lime carbonates 1 month per 1mm
 

irish_spread

Private Member
I've been asked to price some of these types of jobs but don't know a lot about NHL etc. what gauging method is best sparks ?
 

ruffdiamond

New Member
Depends how hard the stone, etc is, its not a good idea to put hard render on soft stone or brick or a substrate that needs to breath, but also consider that the softer the render is the quicker it will weather.
 

Gypsy

New Member
Lime...dont ya just love it? ha,ha,ha..
40% of my work comes from someone else already having had a go.
 

Gypsy

New Member
going to render a farm house when the weather gets better. before putting the scratch coat on want to make sure that it gets a good bond what we would normally do would be to put a slurry mix on just wounderd if putting a splatter dash is any better? cheers.

I'm always glad to travel if you need a spare pair of hands Bud.
 

Render Systems

Private Member
if i had to wait 10 months per mm of lime render to carbonate before i put the next coat on it would take 20 months for the first 2 coats to carbonate before putting top coat on. i think you have been mistaken Spark2010 but it does take a long time to carbonate to its full strengh... just 1mm per day before re-coating should be allowed
 

Limeco

New Member
Gents
the HyperLimeco/carbonation link is to my company Limeco. Our HyperLime hydraulic limes are high performance materials designed to compete with gypsum and cement/lime plasters, renders and mortars in economy and speed of application. They're quick setting and durable which allows multiple layers to be applied quickly. Our materials carbonate at 3-5mm per month in use. NHLs typically carbonate at 2-3mm per month.
In a three layer plaster directly onto brick/stone, we recommend that this is done as quicky as possiblewith our materials. The scratch coat can be applied over the dubbing out as soon as the surface of the dubbing out appears dry and the mortar has "gone off" (typicaly 1-2 days). The skim can be applied to the scratch in the same time. HyperLime products are used at between 1:2.5 and 1:3, varying the aggregate for the plaster layer.
 

warriorupnorth

Private Member
Gents
the HyperLimeco/carbonation link is to my company Limeco. Our HyperLime hydraulic limes are high performance materials designed to compete with gypsum and cement/lime plasters, renders and mortars in economy and speed of application. They're quick setting and durable which allows multiple layers to be applied quickly. Our materials carbonate at 3-5mm per month in use. NHLs typically carbonate at 2-3mm per month.
In a three layer plaster directly onto brick/stone, we recommend that this is done as quicky as possiblewith our materials. The scratch coat can be applied over the dubbing out as soon as the surface of the dubbing out appears dry and the mortar has "gone off" (typicaly 1-2 days). The skim can be applied to the scratch in the same time. HyperLime products are used at between 1:2.5 and 1:3, varying the aggregate for the plaster layer.

Welcome to the forum, try an introduction in the newbie section and then maybe start a new thread in the render section , it will be nice to get some new input in this area of the trade
 

mayti

New Member
like render system says dont use sbr or cement use clean washed sharp sand and 3.5 nhl lime hydrolic and fibres in the any dubbing out and scratch coat about 2half sand to 0ne lime in backing coat 3 to 1 for finish allow adequate drying times between each coat
 
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