Base coats

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smedhead

Active Member
Yes sometime use say Rend-aid(Weber) if the blocks/bricks are in poor condition or have mixed suction background and then you can place the mesh into that coat ,key up, done ready for mono.
 

passi

Member
So who uses base coats with modern renders like mono ? And why ?
We're currently using wetherby high polymer dash receiver. It's the bees knees, can spread a s**t load before you need to dash it. Hangs all day long

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johniosaif

Private Member
We're currently using wetherby high polymer dash receiver. It's the bees knees, can spread a s**t load before you need to dash it. Hangs all day long

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Is that applied over insulation board ?
 

johniosaif

Private Member
Yes mate eps

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Definitely have to try it some time , only done two EWI jobs, one was was she'd at the bottom of the garden ,the other one was a 15m square job over eps ,1.5m silicone silicate finish so I'm still a complete novice , but that 15m job was for £1600 supply and fit so very worthwhile and too smalll for the full time Ewi people , just gave away a 95 m job that had kingspan and krend on top ,thought I'd probably fuk it up
 

owls

Private Member
Definitely have to try it some time , only done two EWI jobs, one was was she'd at the bottom of the garden ,the other one was a 15m square job over eps ,1.5m silicone silicate finish so I'm still a complete novice , but that 15m job was for £1600 supply and fit so very worthwhile and too smalll for the full time Ewi people , just gave away a 95 m job that had kingspan and krend on top ,thought I'd probably fuk it up
Maybe best avoided kingspan kooltherm is horrible stuff to use.
 

smedhead

Active Member
Phenolic boards are getting bad press on their lifespan when used with a renders on top not sure as to technical data why, just that systems are failing!
 

owls

Private Member
There a pain when they get wet, there also very expensive compared to eps insulation but you can get thinner and achieve a better u value, you pays your money yountakes your choice.
 

vfr12

MOTORC*NT
Phenolic boards are good in the right hands. To the op- basecoat reduces the chance of slumping and controls the suction.
 

passi

Member
There a pain when they get wet, there also very expensive compared to eps insulation but you can get thinner and achieve a better u value, you pays your money yountakes your choice.
They absorb water like a sponge. Prefer using eps

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