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DoorPrep™ – The Essential Composite Door Cleaner

Every great finish starts with the right preparation, 


Composite doors (GRP) need more than a wipe-down to be ready for protection. Ordinary household cleaners — and even plain tap water — can leave residues, films and hidden contaminants that weaken the gelcoat. That’s why protective treatments don’t last as long as they should.

That’s why every Protect My Door™ service begins with DoorPrep™.

Technician-Only Formula


DoorPrep™ is a professional-only Composite Door Cleaner. It isn’t left behind after a service and isn’t sold separately. This exclusivity ensures your door always receives a level of preparation that household products can’t match.

 What DoorPrep™ Does

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Lifts and removes airborne contaminants such as fine metal particles and pollutants that bond invisibly to the surface

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Without Prep: these residues stay embedded, weakening protection before it even begins

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Clears away oxidation from the gel coat, removing chalky patches and restoring a clean surface

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Without Prep: faded, powdery layers remain, making treatments far less effective

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Deep-cleans beyond household products, removing residues that ordinary cleaners leave behind

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Without Prep: films and contaminants are sealed in, reducing bonding strength

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Resets the surface to true ‘factory fresh’ condition, ready to absorb protection

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Without Prep: treatments can’t penetrate properly and wear away faster

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Professional-only formula, engineered for composite doors

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Without Prep: DIY cleaners risk damaging the gel coat or leaving streaks

Back Lable Prep

© Copyright property of Protect My Door™

Designed and Built by
Michelle-Butterfly

(1974–2025)
In Loving Memory of Michelle Bentley-Green

“Our time was brief, the struggle was real, but your smiles, love and laughter live on.”

With heartfelt thanks to Mary Stevens Hospice for their exceptional care, dignity, and compassion. Their support meant everything.

Please consider supporting their work … Click Here