Render done ; gap filling

[Pocster]

Hey all

 

K rend done ; looks great !

Some gaps between random stone wall and build . Is this a job for white CT 1 ??? Or something else ??

 

cheers 

[PeterW]

Use clear CTI as the edge is nice and crisp. And white discolours. 

[Pocster]

17 minutes ago, PeterW said:

Use clear CTI as the edge is nice and crisp. And white discolours. 

Thanks . So clear CT1 won’t discolour , mould , flake ?? In an external environment?

[PeterW]

@Nickfromwales clear CT1 doesn’t change colour does it ..?? Other option is grey or black, both are suitable for outdoors. 

[Onoff]

20 minutes ago, pocster said:

Thanks . So clear CT1 won’t discolour , mould , flake ?? In an external environment?

 

Clear is fine.

 

White CT1 goes "near custard yellow" to quote the Welsh Wizard.

[bassanclan]

Clear CT1 does discolour.

I don't know about outside, but in a bathroom I fitted 6 months ago it's gone yellow - even though it has some natural light.

 

What about using the same mortar as the stone?

[Bitpipe]

Is there insect mesh at that interface?

 

[Onoff]

Kevin Cashin at C-Tec said something to me about white CT1 on the lines of it can be cleaned with a mild bleach solution I think to bring back the white.

[Pocster]

19 minutes ago, Bitpipe said:

Is there insect mesh at that interface?

 

No . Essentially it’s the edge of the timber frame with insulation pir meeting the wall - foamed in the gaps . So this gap is just where the Renderer ended his bead .

[Pocster]

24 minutes ago, bassanclan said:

Clear CT1 does discolour.

I don't know about outside, but in a bathroom I fitted 6 months ago it's gone yellow - even though it has some natural light.

 

What about using the same mortar as the stone?

Going to be awkward ! . Don’t want to get it on the nice render nor the stone . Suspect mortar that thin would crack and eventually fall out ...?!

[Bitpipe]

I always meant to seal the gaps where my render met the soffits (which were installed after the render).

 

Never got round to it and not sure there's a massive benefit other than aesthetics as there's insect screen top and bottom and I'd never get up to clean it. Bit of a shadow gap effect.

 

Anyway, as my render is likely need removed and replaced, glad I didn't bother.

 

So my choice would to leave it be and see how you live with it - nice home for the spiders...

[bassanclan]

OK what about a white frame sealant such as around windows. The concern being it won't match the render or the stone

[Dreadnaught]

Compriband or similar?

[nod]

I wouldn’t bother with silicone 

I normally tape the render with Jaffa taped and point with a motar gun Then flatten it down with a finger trowel 

I’m just trolling through my phone for a picture

[soapstar]

@pocster Looks nice, very similar to what I would like. Can you tell me what K-Rend product you used and colour? I get confused with all the different products they have!

[Pocster]

6 minutes ago, soapstar said:

@pocster Looks nice, very similar to what I would like. Can you tell me what K-Rend product you used and colour? I get confused with all the different products they have!

Erm !

i get confused also !

The front as in the photo is a different k product to the sides . Sides were thermolite front was render board . Colour is limestone white . It’s almost like ‘pure’ white but a bit off . Renderer recommended the colour other than pure white because any ‘ageing’ will be less noticeable.

[Bitpipe]

2 minutes ago, pocster said:

Erm !

i get confused also !

The front as in the photo is a different k product to the sides . Sides were thermolite front was render board . Colour is limestone white . It’s almost like ‘pure’ white but a bit off . Renderer recommended the colour other than pure white because any ‘ageing’ will be less noticeable.

 

Just watch out for algae growth - blows onto the wall and gets into the finish and then blooms when it's damp - jet washing does not shift it (but will take the topcoat off your render)

 

When I get mine replaced I will try and treat with an anti-fungal product.

[nod]

K rend do an anti algi 

Pick a dry day Spray with a garden sprayer Let the rain do the rest over the next couple of days 

As long as you don’t use a turbo type Nozzle A jet wash will bring it up like new 

If you are looking for a very white white that can be applied on all surfaces The Sw K rend is a good all rounder 

[Onoff]

4 hours ago, pocster said:

 

 

 

I'd be painting that table to match...

[Cpd]

1 hour ago, nod said:

I wouldn’t bother with silicone 

I normally tape the render with Jaffa taped and point with a motar gun Then flatten it down with a finger trowel 

 

+ 1 this is what I would do 

[nod]

1 hour ago, Cpd said:

+ 1 this is what I would do 

It does look really slick against the render 

mans now with the roughneck type guns it’s so Quick 

[Onoff]

1 hour ago, nod said:

It does look really slick against the render 

mans now with the roughneck type guns it’s so Quick 

 

A question for the expert...what's the "trick" with mortar guns? Using 4:1 building sand / opc, quite wet and sometimes it "blocks". Well mixed, no lumps etc. Sometimes works if you just shake the gun a bit. Is it redistributing the water or something?

 

Cheers

[nod]

11 minutes ago, Onoff said:

 

A question for the expert...what's the "trick" with mortar guns? Using 4:1 building sand / opc, quite wet and sometimes it "blocks". Well mixed, no lumps etc. Sometimes works if you just shake the gun a bit. Is it redistributing the water or something?

 

Cheers

I ideally mix a bit of SBR ion the mortar

4 .1 as you say

It will come out sloppy But don’t teach it till it has thickened up Then I run a mastic trowel round 

It’s getting the mix just right rather than any skill with the gun 

 

 

[Declan52]

Clean it out every 2 fills. If it starts catching on the nozzel then you have no chance of getting it out nice and creamy. 

[Construction Channel]

Probably not good for the mix but less water. More Feb seems to work well through guns