Pre-Form HB is a high-build, pigmented polyurethane wood form sealer engineered for plywood and steel forming applications in architectural precast, tilt-up and gang-form concrete operations. The system chemically bonds to the form substrate, creating a hard, durable coating that delivers uniform, smooth, planar cast concrete surfaces while significantly extending the service life of forming panels.
How It Works
By chemically bonding with the wood form surface, Pre-Form HB creates a hard, abrasion-resistant coating that covers screw holes, rough textures, and surface imperfections. This pigmented polyurethane barrier prevents wood grain telegraphing, blocks wood sugar migration that can cause concrete retardation or dusting, and resists vibrator-burn damage. The result is consistently smooth, dense, and uniformly colored concrete with a high-quality architectural finish—ideal for high-reuse gang-form, precast, and tilt-up applications.
Applications
- In gang plywood forming applications to create planar and monolithic concrete surfaces
- On precast plywood forming tables
- In precast operations in order to seal plywood fill-ins for extending steel and fiberglass forms
- To resurface worn or damaged handset plywood forms
- To resurface badly pitted steel forms in architectural precast applications
Advantages of this Pigmented Polyurethane Wood Sealer
- Great extends plywood form life as compared to those used with clear sealers
- Resurfaces pitted steel forms
- Reduces form costs where design requires dense, sound, uniformly colored concrete
- Reduces costs where extended panel reuse is required
- Minimizes rough, porous, exceedingly dusty concrete surfaces
- Reduces and often eliminates patching and sacking of formed concrete surface imperfections
- Meets all federal and state VOC requirements
- Allows use of lower-cost plywood and in effect reducing forms cost
- Superior resistance to vibrator burns
- Self-leveling and is also easily repaired
- Typically tack-free in 4-6 hours
Why Choose Pre-Form HB?
For contractors and form manufacturers specifying plywood or mixed metal/ply form systems for large-scale precast or tilt-up construction, Pre-Form HB provides a premium coating solution that avoids the finish-quality pitfalls of standard form sealers. Where appearance, panel reuse costs, and reduced finish repair cycles are critical, Pre-Form HB delivers measurable value.
