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Waterproof Roof Decks Designed for Outdoor Living

Turn unused rooftop or elevated spaces into beautiful, functional outdoor areas with Dec-Tec waterproof roofing systems. Durable, slip-resistant, and built for year-round use.

Schedule a Roof Deck Consultation Call 443-203-8474
Why Dec-Tec

A Walkable Roof That's Also a Real Outdoor Space

Traditional rooftop decks need a separate framed deck on top — extra cost, extra weight, extra failure points. Dec-Tec is the waterproof surface AND the finished walking surface in one system.

Where It Works

Ideal Applications for Dec-Tec

Rooftop Decks

Rooftop Decks

Convert a flat roof into an entertaining space — no framed deck required.

Balconies

Balconies

Replace aging balcony surfaces with a waterproof system that protects the unit below.

Porches

Porch Floors

Second-story porches and walking decks where moisture below is a concern.

Multifamily

Multifamily Properties

Decks over occupied units where leak prevention is critical.

Entertaining

Outdoor Entertaining Spaces

Anywhere you want a usable, weatherproof surface that looks finished.

Design Options

Customize the Look & Feel

Dec-Tec isn't one-size-fits-all. You can tailor the finish to match your home and how you'll use the space:

Installation Process

How a Dec-Tec System Goes In

  1. Structural reviewWe check the existing deck or substructure for slope, fasteners, and any rot or damage.
  2. Waterproofing preparationSubstrate prepped, edges and penetrations detailed before the membrane goes down.
  3. Surface installationDec-Tec membrane installed with proper overlaps and bonded to the substrate.
  4. Trim & drainage finishingEdge flashing, scuppers, and railing-post details installed and sealed.
  5. Final walkthroughQuality check, cleanup, and walkthrough so you know how to care for it.
Common Questions

Dec-Tec FAQs

What exactly is Dec-Tec?

Dec-Tec is a vinyl-based waterproof membrane system specifically engineered as both a roofing material AND a walkable finished surface. It bonds to the deck below, handles foot traffic, and waterproofs the space underneath — all in one product.

How long does a Dec-Tec roof deck last?

Typically 20+ years with proper installation and basic care. Maintenance is minimal — periodic cleaning and an annual inspection of edges, penetrations, and railing-post details.

Can Dec-Tec be installed over existing surfaces?

Sometimes. It depends on what's underneath — the substrate has to be solid, properly sloped, and free of damage. Often we strip the existing surface to inspect the structure, then install the new system over a clean, prepared deck.

Is the surface really slip resistant?

Yes. The textured finishes have aggregate worked into the surface and meet commercial slip-resistance standards even when wet. We help you pick the texture level based on the application.

Can I put furniture, planters, or a grill on it?

Yes — that's the whole point. Standard outdoor furniture, planters, and grills are fine. We recommend non-rolling furniture feet on rolling pieces, and a grill mat under the grill itself (common practice on any deck surface).

Create an Outdoor Space You'll Use Year-Round

Free consultation, project sketches, honest pricing. Let's see what's possible.

Request a Roof Deck Estimate
443-203-8474