flat roof decking construction

WARM ROOF. This type of construction has the insulation above the roof deck, thus keeping the deck 'WARM'. This is usually the most satisfactory construction for domestic properties as it avoids the need for ventilation of the roof structure. The membrane is then attached to the insulation. A typical warm roof is shown in the 

When waterproofing a walkable roof deck, there are a number of important principles to consider in determining the ultimate performance of not only the decking Similarly, all curbs, knee walls, posts, and wall openings must be constructed and detailed properly to ensure the membrane's performance.

Roof Deck Construction. This article, Building a Roof Deck was inspired after a client recently asked if I would replace her badly worn out roof deck. This wooden deck was built over her screen porch and on top of a flat roof. It's not really flat: it's pitched ¼' per foot but without a spirit level you can't really tell. Years of neglect 

Flat Roof Installation. There are several types of flat roof construction, typically: • Inverted Roof Systems. • Mastic Ashphalt. • Layered Ashphalt. • Concrete. The suggestions given below on installing a deck roof onto one of these surfaces applies to a deck. Inverted Roof System. Many of these roof systems have a 

There are two common forms of construction for flat roofs: • Warm deck (sandwich), or. • Cold deck. Warm Deck Roof. With this type of roof the insulation is placed above the roof deck but below the weatherproofing. There should be no insulation below the deck and no ventilation is required. Some forms of roof decking may 

Many homes in New England have walk on, flat roof decks with living space under them, and 90 percent of these deck roofs leak, ruining your rooms. Stains on sheet rock . A more traditional way of roof deck construction, features an IB Lifetime single ply membrane with fusion welded seams. This method will ensure 

Before we look at how to build a deck on a flat roof, here's an example of what not to do As debris settled into the cracks of the gravel roof it became a muddy sponge, and the Flat roof: timber deck insulated above joists Quinn Building Products Timber deck Vapour resistant sealant strip Quinn Therm QRFR PLY boards 

In terms of the thermal design of a flat roof, what are the options and the best practices of flat roof build ups? The recognised flat roof build ups for best design practices are: Cold Roof; Warm Roof; Inverted Roof. In the case of a flat roof, insulation is usually either a rigid board above the deck, or a mineral 

When timbers are used in flat roofing they obviously need to be waterproofed so boards are normally laid across the joists and then a felt or rubber is used to cover the boards to make them waterproof. Where two boards meet and the joint is not on a joist, tongue and grooved decking boards make the joint strong enough to 

Warm Deck Roof Designs for EPDM. The Warm deck roof design is the modern construction method for flat roofs and is preferred wherever this option is possible. Solid (Closed Cell) roof insulation such as Kingspan or Celotex is placed on top of the roof deck rather than in between the rafters. A vapour barrier needs to be 

Proper drainage off the nearly flat surface is key. "We've done them with scuppers, outside roll offs, you name it," Borden says. Call an engineer. The last time Jim LeFaivre, LeFaivre Construction, Taneytown, Md., built a deck over living space, it involved a 12 by 15 foot treated wood deck on a flat roof off a 

"If you build and flash one right and keep it clean a good flat roof won't leak," says TOH general contractor Tom Silva, who had seven different flat roofs to contend The iso board (a flat version of the same material he orders custom fitted for larger roofs) cuts easily with a utility knife and anchors to the plywood sheathing 

Metal decking constructed to support built up waterproofing systems should be of a suitable profile, i.e. featuring crowns that are wider than the respective troughs. This type of deck is no longer recommended for use in flat roof applications due to its long term structural instability, especially if contaminated by moisture.

Flat Roof Insulation >>. Flat Roof Deck. Deck. A 'deck' is the structural substrate of a flat roof and should be capable of supporting the static and dynamic design loads as well as any loads occurring during construction from machinery and plant. The deck should be of adequate strength and stiffness to ensure structural