Synthetic Deck Sealant

500ml

$39.95

$39.95

Description Returns Shipping & Pickup

Quick Overview

Creates a long-lasting, waterproof barrier that repels dirt, water and spills
Non slip

Why Use Gtechniq Marine Synthetic Deck Sealant?

Synthetic Deck Sealant delivers serious protection against the elements your deck faces every day. Harmful UV rays, saltwater spray, foot traffic, and spills can all lead to damage over time. Our deck sealant creates a waterproof barrier that repels dirt, water, and stains while preserving your deck’s natural beauty and texture.

The non-slip formula means you get protection without sacrificing your safety, even in wet weather conditions. Easy to apply and built to last, Synthetic Deck Sealant keeps your deck cleaner for longer with minimal maintenance. No complicated application method or special equipment required. Just clean, apply, and let it dry.

Simple steps to help you get the best results

Step 1: If required, clean the decking using Synthetic Deck Cleaner and allow it to fully dry.
Step 2: Shake bottle very well before use.
Step 3: Fully saturate the decking, avoiding over-spraying the product onto surrounding areas.
Step 4: Allow to dry for 6 hours.

Safety Data Sheets

Take a look at the Safety Data Sheet for Synthetic Deck Sealant

The Gtechniq Difference

At Gtechniq, we engineer surfaces that perform as good as they look. Synthetic Deck Sealant reflects this commitment, developed with advanced chemistry and tested in real marine environments to exceed industry standards.

Every product in our marine range follows the same philosophy: proper preparation leads to better protection year round. Our ceramic coatings, deck cleaners, and surface sealants work together as a system. When each step is done right, protective barriers last longer and perform better. That’s why boat owners and marine professionals worldwide trust Gtechniq to deliver results that hold up season after season.

Frequently Asked Questions

What types of decking is this sealant designed for?

Synthetic Deck Sealant is formulated specifically for synthetic and composite deck surfaces found on boats. It’s not intended for wood decks, teak, or other natural wood surfaces.

How do I prepare my deck before applying the sealant?

Start by cleaning your deck with Synthetic Deck Cleaner to remove dirt, salt, and any existing residue. Let the surface dry completely before application. Proper prep work ensures the sealant bonds effectively and lasts longer.

Will this sealant make my deck slippery?

No. The formula is specifically designed to be non-slip, maintaining safe footing even when wet. You get full protection without compromising safety during foot traffic.

How long does the sealant take to dry?

Allow 6 hours of drying time before exposing the deck to foot traffic or water. Apply out of direct sunlight and avoid use during wet weather conditions for best results.

How often should I reapply Synthetic Deck Sealant?

Reapplication depends on use and exposure, but most boat owners find a couple of applications per season keeps their deck protected. Regular cleaning between applications helps extend the sealant’s performance.

Can I use this product on vertical surfaces?

Synthetic Deck Sealant is designed for horizontal deck surfaces. For vertical surfaces or other areas of your boat, check our full marine sealant range for the right product.

What other Gtechniq products work well with Synthetic Deck Sealant?

Pair it with Synthetic Deck Cleaner for prep work, and consider Fabric Coat for your upholstery and cushions. For gel coat and hull protection, Ceramic Fast Coat provides excellent UV and water damage defense across your whole vessel.

We want you to be happy with every product. Unopened products in their original packaging can be returned within 30 days with your receipt or order confirmation for a refund or exchange.

Because of the nature of our products, opened chemicals, soaps, and coatings are final sale. Towels, brushes, pads, and accessories must be unused and in resalable condition. Class enrollments and store credit are non-refundable but can be transferred to a future class. Received something damaged? Contact us within 7 days and we will make it right.

To start a return, bring your item and receipt to any location or call (818) 888-7111.

Right now we offer free in-store pickup at all three San Fernando Valley locations. Order online and our team has it ready at the counter, often the same day. You will get a notification when your order is ready.

Pickup at Winnetka, North Hills, and Canoga Park. Bring your order confirmation and a photo ID. Orders are held for 14 days. Nationwide shipping is coming soon.