Sikaflex construction sealant
- Thread starter jwiereng
- Start date
The Artisan
Adventurer
We used Sika 252 on the composite pod we built, good stuff. We used a cordless Ryobi caulk gun. You can not purchase it at box stores. Call Sika corp tech and tell them the materials you are using. Most likely they will tell you to use this and primer but might have others especially for alum.
Kevin
Kevin
The availability at box stores is a very attractive to me, for self builds. Easier than calling around to find local distributor, who is probably open only 9-5.
The Artisan
Adventurer
Jamestown distributors order it online
Kevin
The Artisan
Adventurer
Call sika tech support or shoot them an email. They would know best. Sika 252 is about double price per tube, then box store sika. It takes a great amount of force to squeeze it out with a manual gun as well.
Kevin
Last edited:
Victorian
Approved Vendor : Total Composites
I'm a big fan of the Koemmerling adhesives. They are VERY easy to work with in comparison to Sika. Most times you only need soap and water for clean up. https://totalcomposites.com/product-category/adhesive/
Peter_n_Margaret
Adventurer
I used 3 Sika products in the construction of our composite 4WD motorhome body.
The body is totally held together with Sikaflex, without screws or bolts or other mechanical fasteners.
"252" for the highly structural requirements. Needs to be used with the appropriate cleaner and primer to achieve best adhesion, so takes more time but is exceptionally strong. When gluing dis-similar materials you also need to take differential expansion into account for long joins and adjust the thickness of the glue joint accordingly.
"11FC" described as an adhesive/sealer for less structural joints. More flexible and easier to use. Cheaper. Totally adequate to attach sail track, for instance.
"Pro" which is technically a sealer only, but has sufficient strength for wider area adhesive jobs (our windows are held in with "Pro" - no screws).
More recently I have used "Construction AP" which is also just a sealer, but again it is good for lower strength adhesive jobs and is even cheaper than "Pro".
Buying in sausages instead of tubes is considerably cheaper.
I built our rig in 2004. I have never had a Sikaflex join fail.
Cheers,
Peter
OKA196 motorhome
The body is totally held together with Sikaflex, without screws or bolts or other mechanical fasteners.
"252" for the highly structural requirements. Needs to be used with the appropriate cleaner and primer to achieve best adhesion, so takes more time but is exceptionally strong. When gluing dis-similar materials you also need to take differential expansion into account for long joins and adjust the thickness of the glue joint accordingly.
"11FC" described as an adhesive/sealer for less structural joints. More flexible and easier to use. Cheaper. Totally adequate to attach sail track, for instance.
"Pro" which is technically a sealer only, but has sufficient strength for wider area adhesive jobs (our windows are held in with "Pro" - no screws).
More recently I have used "Construction AP" which is also just a sealer, but again it is good for lower strength adhesive jobs and is even cheaper than "Pro".
Buying in sausages instead of tubes is considerably cheaper.
I built our rig in 2004. I have never had a Sikaflex join fail.
Cheers,
Peter
OKA196 motorhome
Victorian
Approved Vendor : Total Composites
You can only purchase this sealant from us directly. https://totalcomposites.com/product-category/adhesive/. Here is a video on how to use it: