Mounting Roof Top Unit On Existing Roof

Renaud de saint ceran subject.

Mounting roof top unit on existing roof.

The primary function of the curb is to keep weather out while supporting flashing the equipment on it. Excellent weather just a perfect early morning to replace a york dl10 10 ton pack. Never attach roof ashing directly to a york rooftop unit. In the last month we were asked to evaluate two commercial spaces for new rooftop units.

Adding new roof top units to existing roof msquared48 structural 21 feb 13 16 36 i like to convince architects to put any rooftop units on the ground wherever possible solves a lot of problems if the space is available and the roof is weak. And in this one sentence lie the benefits and the detriments we face in the roof curb business everyday. York does not recommend vibration isolation be pro vided on both the fan skid inside the unit and the curb outside the unit without credible testing results. Standing seam metal roofing offers a durable sustainable alternative to other roof types and can provide maintenance free service for five to 10 decades.

Sadly this exceptional lifespan often is sabotaged with the mounting of essential rooftop equipment and ancillary mechanicals. Units shall be mounted on curbs raised a minimum of 8 inches 203 mm above the roof surface or where roofing materials extend beneath the unit on raised equipment supports providing a minimum clearance height in accordance with table 1510 10. Baycurb042a baycurb043a baycurb044a precedent roof curb acc svn43e en created date. There are three options regarding permitting of replacement roof mounted units.

Placing the unit on lumber which bears on a sloped roof causes the equipment to sit out of level and operate less efficiently. Often we are asked to evaluate an existing steel roof structure to determine if it can support new roof top units. Installer s guide roof curb packaged rooftop units. It may also migrate if not anchored.

Tenants frequently remodel commercial spaces for their current needs and in many cases add new air make up units exhaust fans and hvac units. If anchored holes are punched in the roof. Prefabricated roof curbs have been in use since the roof has been utilized for something other than keeping weather out. Going to be doing a full install.