Family Handyman Magazine LOVES InstaTrim®!

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Cover Your Crack

The Flexible Caulk & Trim Solution

Buy Instatrim

Baseboards & Floors

Keep dirt & debris from hiding under baseboards

Buy Instatrim

Windows & Doors

Save money on heating & air conditioning bills

Buy Instatrim

Kitchen & Bathrooms

Create moisture resistant barriers around sinks, tubs, showers and toilets

Buy Instatrim

Ceilings & Wall Corners

Cover sloppy paint and cracks

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How to Install InstaTrim

Cover the cracks in your home with this flexible, self-adhesive trim.

Cover Your Crack

This flexible, self-adhesive PVC strip stops the gaps in your home. It provides a maintenance-free barrier that prevents debris from collecting in your crevices and resists air, moisture, mold and mildew.

InstaTrim® has patented, self-centering wings to assure uniform positioning on any surface. It’s flexible, comes on a roll for easy use (also available in bulk rolls) and no special tools are needed. You simply peel and stick. The odorless adhesive remains intact with no curing time necessary and its long-lasting professional finish is durable and low maintenance.

Why Choose InstaTrim® ?

+  Easy to use, peel and stick application

+  No special tools needed

+  Non-toxic, odorless adhesive

+  No cure time needed

+  No mess, no waste

+  Mold & mildew resistant

+  Durable, long-lasting and easy to clean

Family Owned & Made in USA

Greg owns and operates his company, CornerFlex, Inc., with his wife Betsy in Scandia, MN.  Amundson invented InstaTrim because he was tired of seeing caulking that “looked like a monkey installed it.” 

News reporters have written about this patented caulking alternative in the Star Tribune and Finance & Commerce. The product is available at and

This husband and wife team work together and serve together, donating their time and product to Operation Honor – Veteran Proud, a non-profit organization that hires veterans to make hand-crafted burial and retirement flag cases. InstaTrim® provides the perfect seal for the cases.