High Build Primer

Sandable Bonding Coat

item(s): 41108


POR-15 High Build Primer provides sandable and buildable coating that can be applied over cured POR-15 Rust Preventive Coating and all POR-15 topcoats to enable quick refinishing and recoating of these products. POR-15 High Build Primer is a single component formula that fills in minor Imperfections. POR-15 High Build Sandable Primer adheres well to steel, aluminum, stainless steel, brass, and other primed and painted surfaces.

We developed this special "interlocking" primer after many requests from customers who wanted a coating with special adhesion characteristics that make it perfect for most painted surfaces, especially POR-15 Rust Preventive Coating.

This tie coat primer is highly resistant to penetrating topcoats, like lacquers, enamels, and two-component finishes. It sands very smoothly, as well. Try some on your next project.

POR-15 High Build Primer Directions

WARNING: Cancer - www.P65Warnings.ca.gov.

Customer Reviews

Based on 4 reviews
Russell Pennington
Great High Build Primer

Sprays easy, covers well, good sanding, and adheres to POR15. All good.

Steve F.
Good product

This primer will highbuild for sure. Got it on too thick and had a lot of sanding to do
Does not sand well

Kelly Neal
As with all of POR's products it is top notch

I would highly recommend the product, it is the only product I trust to help protect my project vehicle.

Timothy Boyer
High Build Primer

Working on a restoration of a 73 Ford F-100 and needed a better color for the engine bay area. While rust treating the bay, picked up a can of High Build Primer and was happy to discover it has a nice bluish-grey tint to it perfect for replacing the original Ford baby blue in the engine bay that I do not care for. The goal is to get the engine core with its darker Ford Blue to pop up visually within the bay, but still keep everything looking like it was "Ford-true." The High Build Primer complements the two tone exterior blue of the truck nicely. Will coat with Clear Matte from POR-15 to finish it off.

Surface Preparation: 

For maximum adhesion sand surfaces to be painted with 320 grit sandpaper. Clean painted and bare metal surfaces with POR-15 Cleaner Degreaser. Bare metal surfaces should be treated with POR-15 Metal Prep for maximum adhesion. Spray or brush on one or two covering coats of POR-15 High Build Primer and allow 10 to 15 minutes between coats. POR-15 High Build Primer can be topcoated after 24 hours of cure.