Mounting Roof Top Unit On Existing Roof

There are three options regarding permitting of replacement roof mounted units.

Mounting roof top unit on existing roof.

Standing seam metal roofing offers a durable sustainable alternative to other roof types and can provide maintenance free service for five to 10 decades. Never attach roof ashing directly to a york rooftop unit. It may also migrate if not anchored. If anchored holes are punched in the roof.

Placing the unit on lumber which bears on a sloped roof causes the equipment to sit out of level and operate less efficiently. 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. Sadly this exceptional lifespan often is sabotaged with the mounting of essential rooftop equipment and ancillary mechanicals.

Using improperly designed internal and external isolation springs can increase vibration. Often we are asked to evaluate an existing steel roof structure to determine if it can support new roof top units. Going to be doing a full install. Installer s guide roof curb packaged rooftop units.

And in this one sentence lie the benefits and the detriments we face in the roof curb business everyday. You can t ask for a better job on a monday morning to start off the week. The usual method is to mount the unit on wood blocking to raise it above the plane of the panel ribs and give it a surface to bear upon. Prefabricated roof curbs have been in use since the roof has been utilized for something other than keeping weather out.

In the last month we were asked to evaluate two commercial spaces for new rooftop units. Baycurb042a baycurb043a baycurb044a precedent roof curb acc svn43e en created date. 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. 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.