When the key objective is to provide a curb that will perform for the entire life of the standing seam roof there are four key points to keep in mind.
How to build a roof curb.
Include a footnote in the mechanical and skylight sections that reads all roof curbs are specified in 07720 curb installation should be a part of the roof deck not on top of insulation or roofing materials.
Of course like most aspects of building construction there are choices available in materials methods techniques and styles of installing a roof curb.
If roof curbs are a source of customer dissatisfaction leaks in their roof the following items should help you make better roof curb choices.
Check to see if your building manufacturer has a recommended curb design.
Any existing curb adapters should be removed from the system.
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A curb adapter should only be installed on top of the original factory roof curb or the curb that is roofed into the building.
And in this one sentence lie the benefits and the detriments we face in the roof curb business everyday.
Next measure the area and make calculations so you know how much of your chosen materials to buy.
Metal building curbs are custom fabricated to fit any standing seam or rib panel roof configuration.
Some are very specific and may even require a certain type of curb to satisfy their warranty requirements.
The primary function of the curb is to keep weather out while supporting flashing the equipment on it.
Purchase your materials including prefabricated trusses plywood covering and roof tiles.
To build a roof start by deciding whether you want to put up a flat or pitched roof on your building.
Make the inside dimensions of the curb to the exact size of the roof opening.
Is a leading manufacturer of curb adapters roof curbs seismic curbs vibration isolation rails fittings and other adapter curb products for the nationwide hvac wholesale distribution industry since 1959.
Prefabricated roof curbs have been in use since the roof has been utilized for something other than keeping weather out.
Specify roof curbs in section 07720.