Roof Decks

Roof deck construction options

Rooftops offer great opportunities for creating attractive entertaining or relaxing areas, but this useful space is so often wasted. Building a roof top deck on an existing building is often seen as expensive, time-consuming and very difficult. But it needn’t be that way. Depending on what you want to achieve as the final result, HandyDeck has two alternative options for building amazing looking roof decks.

Firstly is the option of laying down interlocking tiles over the existing surface and secondly is the option of creating an elevated deck using a pedestal support system. Let’s look at both of these in turn.

Interlocking Deck Tiles

The beauty of interlocking deck tiles for a rooftop deck is their simplicity. You simply lay the tiles by snapping them together right over the existing surface, creating an instant ‘floating’ rooftop patio. So it’s normally a do-it-yourself job that can be completed in less than a day. The existing deck will normally slope for drainage, so your new deck when using interlocking deck tiles will also slope in the same direction. In most cases, you can lay the tiles directly over drainage holes that may be positioned in the rooftop area.

With interlocking deck tiles, you don’t need any permanent supporting structures which is often the major impediment to installing a roof deck. If you live in a condo building, generally speaking, the building owners won’t permit the construction of any ‘permanent’ structures on a rooftop.

We often get asked ‘will the decking damage the waterproof membrane on the roof top?’ All our interlocking decking tiles have a large number of ‘feet’ on the underside of the integreted plastic base. These ‘feet’ distribute any load evenly over the surface below, so under normal circumstances with typical waterproofing materials, the ‘feet’ should not dig into or damage the membrane.

But if you or the building owner still have concerns about possible damage to waterproof membranes on the rooftop, we suggest you lay down an extra protective layer of EPDM sheeting over the existing roof surface. You can buy EPDM in various widths with lengths up to 50′ wide from specialist suppliers such as Best Materials or Resource Conservation Technology who can also custom fabricate a single sheet to avoid seams.  They can also supply a complete system for your roof deck that includes adhesives, sealants etc.


interlocking tiles on roof deck

SwiftDeck Ipe wood tiles on roof deck


Pedestal Paver System

For large rooftop decks and especially in commercial locations subject to heavy foot traffic, we suggest constructing your roof deck with structural porcelain pavers supported on adjustable height pedestals. The pavers used for this pedestal supported plaza system are exceptionally strong, scratch resistant, stain resistant and non-combustible.  These pavers are not interlocking but are simply positioned with the corner of each paver placed on the head of the adjustable height pedestals using the inbuilt spacer tabs to keep them accurately aligned.

One of the big advantages of the pedestal paver system is if your rooftop has service pipes, an uneven surface or slopes in multiple directions, you can raise the deck surface to completely cover any service pipes and create a perfectly level, elevated roof deck surface. A pedestal paver system can raise the deck height from as little as 1/2″ to over 3 feet if required. And all this is achieved without any permanent structures being installed on the rooftop. The pedestals are simply placed on the existing surface or waterproof membrane, the wide circular base ensuring no damage to any membranes.

Porcelain pavers are considerably lighter and thus much easier to transport to your rooftop and install compared with concrete pavers, are wear resistant, stain resistant, fade resistant and freeze/thaw resistant. They are also available in a very wide range colors including simulated stone and simulated wood, giving you the ability to construct a wood look roof deck in locations which may have strict fire codes prohibiting or restricting natural wood roof deck.


Ebano pedestal paver system on roof deck

Ebano wood look porcelain pavers on roof deck


Whichever roof deck option you select, decking tiles or a pedestal paver system, before you start, you should always seek permission from the building owner or other organizations concerned with the care and maintenance of your building. You should also check that local regulations permit decking tiles to be installed on rooftops and that the specific type of roof decking material is permitted. In some urban areas, there may be fire regulations for example which could restrict the building of a wood or composite wood deck on a roof top. Although the Ipe wood used on our SwiftDeck Ipe wood deck tiles has a Class A (highest) fire rating , even this may not be sufficient to satisfy some authorities. Fortunately the option of the pedestal paver system will still permit you to build a wood lookalike roof deck.

For further information on building roof decks with either interlocking deck tiles or a pedestal paver system using porcelain pavers, just give us a call on 866 206 8316 or send us an e-mail.