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Working from a plan or entering areas ​

Thermly gives every element an area and an assembly. The assembly is the same either way; the area can arrive two ways, and you can choose per element on the same project.

The short answer ​

  • Have a plan and want the full paper trail? Work from the plan.
  • Already have the areas in hand? Enter them directly.

Both feed the identical calculation and produce the identical report. One is not "more compliant" than the other.

Working from the plan (favoured) ​

Upload the plan set, calibrate once, and trace the elements off the drawing. It takes a little longer than typing numbers, and it earns four things that direct entry cannot:

  1. A measured take-off. Areas come from the drawing at a calibrated scale, with openings netted out of walls and roofs and pitch applied to sloped roofs. The measurement is visible and checkable, not a number of unknown origin.
  2. An insulation take-off. Because the areas are tied to real elements and products, Thermly can produce a procurement schedule - product, area, and order quantity - from the same measure. See Generating your insulation take-off.
  3. Spatial resolution. A wall run traced on the plan, an opening dropped on the wall it belongs to, a skylight on its roof: the geometry is unambiguous, and it appears as a marked-up diagram in the report.
  4. A plan-linked project. The report records which plan set the areas were measured from, and the project stays attached to that plan for reference, revision, and review.

This is why the plan-first path is the one the walkthroughs teach.

Entering areas directly ​

If you already have the areas - from a QS take-off, a schedule, or an earlier measure - type them straight into the element rows. It is the faster route when the numbers are already trustworthy and in hand, and the compliance calculation is exactly the same.

What you give up by skipping the plan is the four items above: there is no measured diagram in the report, and the insulation take-off has less to work from. You can still attach the plan for reference without taking off from it, and you can switch an element to a plan take-off later.

Mixing the two ​

You do not have to choose once for the whole job. Trace the walls off the plan and type in a floor area you already have; take off a complex roof and enter a simple garage wall by hand. Each element stands on its own.

See also ​