Which Frame Sealant?

Rotor

Need to seal around a wooden door frame and some plastic windows.
Which of these would be most suitable and what is the difference?
http://www.screwfix.com/p/no-nonsense-exterior-frame-sealant-brown-310ml/61466

http://www.screwfix.com/p/no-nonsense-builders-silicone-brown-310ml/24384

Thanks

ayrforce1

Can`t help as regards any differences but be aware that not all sealants are overpaintable if that is a requirement.

globalds

If your doing the work outside , then use the exterior ( first link)

If you are tidying up the inside then use the other one - Shouldn't get any mildew build up as it has a fungicide in it. (second link)

Rotor

Thanks both. I think what threw me is that the builders silicone ( 2nd one) states 'uv resistant' which i assume you need for outside windows ( which mine are) whereas the 1st one doesn't.
Plus one is acylic based the other silicone and i don't know what properties each has.
Guess I'll go with the one that gives me a big clue - " Exterior Frame Sealant":D

planemad

Get yourself some Dow Corning frame sealant - its far superior with regards to the bond and sealing properties.

Will cost you a £2 more but worth it.
http://www.screwfix.com/p/dow-corning-794-glazing/75116

docmatt

God no don't use that no-nonsence !!!!!! on your house. Deffo take planes advice above.

iamcornholio

Acrylic may tend to crack after a few years if left bare, but silicone or polysulphide mastic will not

Acrylic will take paint or varnish/stain, but silicone will not

So use an acrylic mastic if it needs to be over painted, and a 'high modulus' silicone for plastic frames to brickwork

Don't forget to dip your finger in fairy liquid when smoothing it down

border_collie

iamcornholio wrote: »

So use an acrylic mastic if it needs to be over painted, and a 'high modulus' silicone for plastic frames to brickwork

Don't forget to dip your finger in fairy liquid when smoothing it down

Why "high modulus"? I thought that was less flexible. Is that an advantage when sealing brick to plastic frames?