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Adheseal Primer 50AVendor:
Adheseal Primer 50A is a clear, fast-drying adhesion-promoter wipe for non-porous surfaces before selected polyurethane, MS polymer, silicone and acrylic sealants or adhesives. It is particularly useful on powder-coated metal and other difficult-to-bond finishes where surface preparation can determine the success of the joint.Choose...- $53.03
- $53.03
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Everflex Polyurethane SupaprimeVendor:
Everflex Supaprime is a single-part, moisture-curing polyurethane primer for porous concrete, masonry, render, cement sheet and compatible timber surfaces. It helps improve adhesion before specified polyurethane, Hi-Flex MS polymer and silicone sealants, as well as selected Everflex waterproofing membranes.Choose Supaprime when porous construction materials...
- $59.51
- $59.51
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Frequently Asked Questions
Why do I need a primer before sealing glass or aluminium?
Primer helps the sealant stick to a surface that would otherwise reject it. Glass, aluminium, and powder coat are non-porous and need an adhesion promoter. A clean surface and the right primer give the sealant something to grip.
When is Primer 50A the right choice?
Primer 50A is for non-porous substrates: glass, aluminium, powder coat, metals, plastics, fibreglass, stone, painted surfaces. Apply it sparingly to a clean, dry surface and let it dry as directed before applying the sealant. It is not a substitute for cleaning the surface first.
When do I need a primer for porous surfaces?
Use Everflex Supaprime or N40 Primer on absorbent substrates or where the sealant manufacturer calls for a primer. These cover porous surfaces and mixed building interfaces before sealants or adhesives. Check the product instructions and run an adhesion test if the instructions recommend one.
Do I always need a primer on aluminium?
Not always. It depends on the finish, the sealant, and the exposure. Primer 50A suits non-porous aluminium. Other primers suit different preparation systems. Check the product instructions for your sealant and run an adhesion test if the instructions recommend one.
What primer do I use on glass?
Primer 50A is documented for glass and other non-porous substrates. Clean the glass thoroughly first. There is no dedicated glass-cleaning product in this range. Wipe the surface with the cleaner recommended for your job and let it dry before applying the primer.
How do I know which primer matches my sealant?
Check the sealant manufacturer's instructions. Some systems require a specific primer on certain substrates. If the instructions say to use a primer, use one. If they say to test adhesion first, do that. The primer must suit both the substrate and the sealant system.