1930s 2 brick/no cavity external render?

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TheSandman

New Member
I've just bought the above house in the Wirral area, it's currently rendered but this is going to be removed and replaced. I have a few questions which I would be grateful to be helped out on!

1) Am I right in reading that a sand and cement render on these walls will only cause damp? And because of that I should be using a lime based render?

2) Will this render be suitable for the extension which is I think thermalite? Or should I be requesting something else on there?

3) I know K-Rend do a lime render, but are their other products not breathable? Are there any other similar but cheaper brands?

Thanks!
 

owls

Private Member
Through coloured renders are all breathable,as they contain a decent amount of lime, the question would be does it have lime mortar joints between the bricks, 30s build I doubt it, so a standard through coloured render would suffice. Thermalite blocks are 3.5 n again a standard through coloured render would do, but it would just want a primer first, to kill the suction, and I'd fully mesh it. But being a double skin brick substrate I'd look at an insulation system prior to rendering, if window details etc allowed.
 

essexandy

The Lake Governor
I think you'll find that if you're removing the existing render building regs will kick in and you'll have to insulate the walls either internally or with an insulated render system.
 

Formby plastering

Well-Known Member
Is it a solid floor or has it got a void?? (Groundfloor)
Sand and cement doesnt allow it to breathe at all makes sure theres plenty of air vents.
There is still cement in the base coat im not a 100% convinced the new renders would solve anything.
 

Lox

Well-Known Member
Is it a solid floor or has it got a void?? (Groundfloor)
Sand and cement doesnt allow it to breathe at all makes sure theres plenty of air vents.
There is still cement in the base coat im not a 100% convinced the new renders would solve anything.
Modern renders fully breathable ! No base coat required
 

Lox

Well-Known Member
Through coloured renders are all breathable,as they contain a decent amount of lime, the question would be does it have lime mortar joints between the bricks, 30s build I doubt it, so a standard through coloured render would suffice. Thermalite blocks are 3.5 n again a standard through coloured render would do, but it would just want a primer first, to kill the suction, and I'd fully mesh it. But being a double skin brick substrate I'd look at an insulation system prior to rendering, if window details etc allowed.
That’s why I said get a spec not a guess
 

Andy g

Well-Known Member
I've just bought the above house in the Wirral area, it's currently rendered but this is going to be removed and replaced. I have a few questions which I would be grateful to be helped out on!

1) Am I right in reading that a sand and cement render on these walls will only cause damp? And because of that I should be using a lime based render?

2) Will this render be suitable for the extension which is I think thermalite? Or should I be requesting something else on there?

3) I know K-Rend do a lime render, but are their other products not breathable? Are there any other similar but cheaper brands?

Thanks!
All render will crack
 

Andy g

Well-Known Member
It shouldn't be down for the customer to get a spec, it's the renders job, and even then if he's uses the product all the time he won't need a spec on every job would he.
Just use sand and cement easy to manitain paint and repair end of
 

Andy g

Well-Known Member
It shouldn't be down for the customer to get a spec, it's the renders job, and even then if he's uses the product all the time he won't need a spec on every job would he.
Sick to defe about thase new render you put a medon render on house what if you want to change window at a later date then the wall is f**k but sand cement paint on f**k**g prodlam
 

vfr12

MOTORC*NT
Sick to defe about thase new render you put a medon render on house what if you want to change window at a later date then the wall is f**k but sand cement paint on f**k**g prodlam
you use waterpoofer in scratch
 

Lox

Well-Known Member
It shouldn't be down for the customer to get a spec, it's the renders job, and even then if he's uses the product all the time he won't need a spec on every job would he.
Why can't customer get a spec ? He's the one asking the Qs ? This job is not a average project so why not ask the manufacturer their advise ? We spray 100s of m2 a week but still get specs
 

owls

Private Member
Why can't customer get a spec ? He's the one asking the Qs ? This job is not a average project so why not ask the manufacturer their advise ? We spray 100s of m2 a week but still get specs
We spray meterage in the 1000s a week at this time of year, and dont bother, unless it's something out of the ordinary. it's just a run of the mill job, ask a renderer/s to look at it for there advice and get them to do the leg work, but you could argue the toss all day with it, it's a forum so everyone has different ways of approaching things .
 

Lox

Well-Known Member
We spray meterage in the 1000s a week at this time of year, and dont bother, unless it's something out of the ordinary. it's just a run of the mill job, ask a renderer/s to look at it for there advice and get them to do the leg work, but you could argue the toss all day with it, it's a forum so everyone has different ways of approaching things .
1000s of meters a week how many machines have you got mate
 

owls

Private Member
1000s of meters a week how many machines have you got mate
Ha Sounds like I'm giving it the big un, it's around or Just over a 1000 a week in the summer, I've a sp11 diesel plus the ritmo, a subbie gang for me use a G4, I'm still on tools aswell.
 

Lox

Well-Known Member
Ha Sounds like I'm giving it the big un, it's around or Just over a 1000 a week in the summer, I've a sp11 diesel plus the ritmo, a subbie gang for me use a G4, I'm still on tools aswell.
What’s your company name mate I must know you turning that m2 over !
 

Vincey

Private Member
f**k me , Hats off to you mate Thats some going , I’m new to machine tbh 1000 plus I’m gonna set that as my new goal , tbf I’m more restoration work old buildings so probably will get no where near that even half of it will do me
 

owls

Private Member
f**k me , Hats off to you mate Thats some going , I’m new to machine tbh 1000 plus I’m gonna set that as my new goal , tbf I’m more restoration work old buildings so probably will get no where near that even half of it will do me
We do a full cross section of stuff, old, new blockwork etc.
2 timber frame pasivhaus houses this week,carrier board and acrylic render.
 
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