No self respecting DIYer or tradesman will ever use own brand stuff.
Window sealant
- Thread starter chatlow
- Start date
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That is not decorating caulk. I would hazard to guess that it is polysulfide sealant.
Polysulfide sealants were used to provide a rubber like seal.
Silicones such as the one recommended by @freddiemercurystwin will be fine, but the bricks need to be dry. A MS polymer will adhere to damp bricks. The latter tend to cost more and are slightly more difficult to smooth (they can be very sticky).
I would recommend that you buy a caulking gun with a no flow release. Once you stop pulling the trigger, the silicone/etc stops coming out of the nozzle. The Cox Easiflow guns are pretty good.
www.toolstation.com
It using silicone, do not buy a high thrust ratio gun. The silicone will come out too quickly eg
If you do need to top up the expanding foam, consider buying a foam gun. You will be able to adjust the flow rate. Also buy gun cleaner, it will help you clear up any accidents. Do not allow the foam on to the face of the uPVC, it goes orange over time.
Polysulfide sealants were used to provide a rubber like seal.
Silicones such as the one recommended by @freddiemercurystwin will be fine, but the bricks need to be dry. A MS polymer will adhere to damp bricks. The latter tend to cost more and are slightly more difficult to smooth (they can be very sticky).
I would recommend that you buy a caulking gun with a no flow release. Once you stop pulling the trigger, the silicone/etc stops coming out of the nozzle. The Cox Easiflow guns are pretty good.
PC Cox Easiflow Sealant Gun
The PC Cox Easiflow Sealant Gun is a simple, easy to use tool. In this ‘skeleton’ gun you can fit up to 400ml cartridges of sealant or adhesive. It's ideal for using in bathrooms, kitchens, windows or paving seals.The simple construction of this tool makes it an appropriate choice for all levels...
www.toolstation.com
It using silicone, do not buy a high thrust ratio gun. The silicone will come out too quickly eg
If you do need to top up the expanding foam, consider buying a foam gun. You will be able to adjust the flow rate. Also buy gun cleaner, it will help you clear up any accidents. Do not allow the foam on to the face of the uPVC, it goes orange over time.
i'll be getting a few of these in. Would this be OK to use? Low modules, water resistant..
www.screwfix.com
No Nonsense Exterior Frame Sealant White 310ml - Screwfix
Order online at Screwfix.com. One-part, odourless and flexible acrylic sealant for external and internal joints around all types of frames. Solvent-free, weather and water resistant. Easy to apply, bonds to most substrates including wood, concrete and masonry. FREE next day delivery available...
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i'll be getting a few of these in. Would this be OK to use? Low modules, water resistant..
No Nonsense Exterior Frame Sealant White 310ml - Screwfix
Order online at Screwfix.com. One-part, odourless and flexible acrylic sealant for external and internal joints around all types of frames. Solvent-free, weather and water resistant. Easy to apply, bonds to most substrates including wood, concrete and masonry. FREE next day delivery available...
Are you sure that it is low modulus? The product description doesn't say much. The description makes it sound like an acrylic product. In my limited experience of using acrylic sealants, they become very rigid over time. That said, I haven't used them for years.
Caulk is acrylic. You were using caulk not that long ago.
True, I can see my above link showing low modulus - perhaps https://www.screwfix.com/p/no-nonsense-glazing-silicone-white-310ml/57735 - might be better (and a little cheaper)
Which is why it shrinks and fails, although to a lesser extent than caulk.
The nononsensw exterior frame sealant looked good but some reviews saying it's acrylic based. Dow796 sounds good but would this be OK between frame and brick (which I need) also how long is curing time as due rain tomorrow morning. Thanks
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