Clear silicone (not cloudy)

[SuperJohnG]

I have black fascia and kytun trims and was going to apply some low modulus silicone where they butt up down the verge, doesn't really need it but also need to do round windows etc. 

 

However on applying the clear silicone from everbuild...it wasn't clear. It's transparent but cloudy, and with black stood out a lot,.hence immediately removed.

 

I could use black but I have white render and the good tip from the joiner was to use clear so that if you make a mess its not a disaster as there is no cleaning black silicone. 

 

I know you can get crystal clear but does anyone have any good recommendations for actually clear silicone (low modulus) they've used? 

[JohnMo]

I have used crystal clear and it's very clear, BUT has to be exposed to UV to stay clear.  Whatever you get read the data sheet to make sure it stays clear where you plan to use it

[SteamyTea]

We used to have to try out dozens of different sealants.  Never found one that stayed clear.  Most end up with a grey tints to them.

You may have more luck with a polyurethane, but they tend to break down in UV light.

The only plastic that stays optically clear is acrylic, but never seen a clear and flexible acrylic sealant.

[Onoff]

9 hours ago, SteamyTea said:

We used to have to try out dozens of different sealants.  Never found one that stayed clear.  Most end up with a grey tints to them.

You may have more luck with a polyurethane, but they tend to break down in UV light.

The only plastic that stays optically clear is acrylic, but never seen a clear and flexible acrylic sealant.

 

Geocel Pro Flex

 

Soudal Transpacryl.

 

Everbuild Crystal Clear

 

DL Chemicals Paracryl

 

Some go on "cloudy" then cure transparent.

[SteamyTea]

32 minutes ago, Onoff said:

 

Geocel Pro Flex

 

Soudal Transpacryl.

 

Everbuild Crystal Clear

 

DL Chemicals Paracryl

 

Some go on "cloudy" then cure transparent.

Bit irrelevant now.

I wonder if it was the chlorine/bromine environment that caused the greying.  The white, which we used in the steamrooms never discoloured, but that was basically being dosed with distilled water all day long.

Edited January 7, 2022 by SteamyTea