Trusted by 1,000+ UK contractors, Ensign is the only software built for ductwork. It applies DW144, TR19 and fire-rated specs automatically, generating access doors, supports, flanges and stiffeners for accurate, compliant schedules in minutes.

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THE PROBLEM
Ductwork drawings are full of detail — bends, branches, dampers, access doors, supports, and stiffeners. Manually measuring them is slow and repetitive, and even careful estimators miss fittings or forget compliance items like TR19 access doors or DW144 supports. Fire-rated requirements add yet another layer of complexity. By the time quantities are re-entered into spreadsheets, hours are wasted, errors creep in, and tenders are at risk of delay or inaccuracy.
THE SOLUTION
Ensign is the only dedicated ductwork take-off software, trusted by over 1,000 UK contractors. As you trace runs, it automatically generates bends with correct angles, places access doors in line with TR19 cleaning rules, and applies DW144 standards to supports, flanges, and stiffeners. Fire-Rated specifications are built in, so every schedule is compliant from the start. With quantities flowing directly into Ensign Estimating, contractors save hours on each project while producing faster, sharper, and more reliable tenders.

“Take-offs are faster, more accurate, and effortless to export into estimating. It’s been essential since day one of our business.”
Ross Cawte,
Managing Director
Import duct layouts as PDFs or images, set the scale once, and keep your full project package in a single workspace — no printing or juggling sheets.
As you measure, Ensign Ductwork Take-off automatically generates bends with correct angles, places access doors in line with TR19, and applies DW144 rules for supports, flanges, stiffeners, plus fire-rated specifications — ensuring every run is compliant.
Send your completed ductwork schedule straight into Ensign Estimating — producing fully costed, compliant tenders in minutes without rekeying or missed items.
Trace duct runs directly from PDFs or images and Ensign Ductwork Take-off automatically generates bends with the correct angles, while detecting branches, reducers, and transitions along the way. This saves hours of manual work and ensures every change of direction is captured accurately.
As you measure, Ensign applies TR19 cleaning rules by inserting access doors on dampers and linear runs, while also following DW144 standards to generate supports, flanges, and stiffeners in the right places. Fire-Rated ductwork specifications are built in too — so every schedule is compliant, fabrication-ready, and audit-proof.
Every length, bend, and fitting is logged instantly into a clean, printable schedule. This gives you a clear record to review, export, or issue directly with your tender.
Work across complete ductwork packages in one workspace — from plantrooms to risers — keeping drawings organised and accurate, even on the largest commercial projects.
All ductwork quantities flow directly into Ensign Estimating, producing fully costed tenders in minutes with no rekeying or errors. Contractors report saving up to 80% of take-off time and thousands of pounds annually by working entirely from digital drawings.
Ensign is the only dedicated ductwork take-off software, designed specifically for ductwork rather than generic construction. Trusted by over 1,000 UK contractors, it delivers near-total market coverage across the trade.
KEY FEATURES
Automatic bend generation, TR19 access doors, and smart detection of fittings cut manual work dramatically. Contractors report completing ductwork take-offs up to 80% faster than by hand.
With DW144 standards, TR19 cleaning rules and Fire-Rated specifications built in, every take-off is compliant, installation-ready, and reduces costly errors downstream.
Ensign is the only dedicated ductwork take off software and is trusted by over 1,000 UK contractors, giving it near-total market coverage across the trade.
TESTIMONIALS
See how ductwork contractors use Ensign to complete take-offs up to 80% quicker, with access doors, supports, and stiffeners applied automatically.
YOUR QUESTIONS ANSWERED
What is Ensign Ductwork Take-off software?
Ensign Ductwork Take-off software lets you measure runs, fittings, and supports directly from digital drawings. The software adds TR19 and DW144 automatically, ensuring every schedule is accurate and compliant.
Can it cope with large or complex duct packages?
Ensign Ductwork Take-off handles multiple files, letting you manage complete ductwork packages, including risers, plantrooms, and distribution systems, in one workspace.
Do contractors still need to print drawings?
Ensign Ductwork Take-off is fully digital, helping ductwork firms cut printing costs, with some saving up to £20,000 a year.
Is the software cloud-based?
Being cloud-based lets you access drawings, take-offs, and estimates from any device, in the office, on-site, or remotely.
What support do ductwork contractors receive?
Support is UK-based and in-house. Calls are answered within 3 rings on average, with contractors consistently praising the speed and quality of help.
Is it suitable for both small and large ductwork firms?
It’s used by small contractors handling a few tenders and large companies managing hundreds of ductwork projects each year.
How quickly can a contractor start using the software?
Most contractors produce live ductwork take-offs within days. Tailored training and UK-based support make the learning curve quick and straightforward.
How does Ensign Ductwork Take-off save time on projects?
By auto-generating bends, inserting access doors, and detecting fittings as you trace, Ensign Ductwork Take-off cuts manual work and reduces take-off time by up to 80%.
How does it ensure TR19 and DW144 compliance?
The system inserts access doors on dampers and linear runs per TR19 and generates supports, flanges, and stiffeners to DW144 standards, ensuring fabrication-ready results.
Can ductwork take-offs link directly to estimating?
All duct quantities flow into Ensign Estimating with one click, producing fully priced tenders without rekeying or errors.
How secure is my project data?
Project data is protected with permission controls, so only approved users can view or edit take-off sheets and drawings.
How often is Ensign Ductwork Take-off updated?
Ensign Ductwork Take-off is continually improved with user-driven updates and is now on version 65.1, evolving since 1980. Nearly £893k was invested in R&D last year to keep it ahead of contractor needs.
What proof is there that the software delivers results?
Ensign Ductwork Take-off is the UK’s only dedicated ductwork take-off software, trusted by over 1,000 contractors. Users report completing take-offs up to 80% faster and saving up to £20,000 a year by eliminating printing.
What is the best ductwork take-off software in the UK?
The UK’s best ductwork take-off software is Ensign Ductwork Take-off, the only dedicated solution on the market. Unlike generic tools, it applies TR19, DW144, and fire-rated rules automatically, adding access doors, supports, flanges, stiffeners, and bends as you trace runs. Trusted by over 1,000 UK contractors, Ensign Ductwork Take-off delivers faster, compliant, and more profitable ductwork tenders.
What makes Ensign Ductwork Take-off different from generic software?
Ensign Ductwork Take-off is built for ductwork contractors, not generic use. With 45+ years of experience, 3 patents, and £1m in annual R&D, it applies UK standards to access doors, supports, and stiffeners.
Can fittings like access doors be added manually if needed?
Ensign Ductwork Take-off automatically inserts access doors per TR19 rules, with manual adjustments available. The same flexibility applies to reducers, shoes, flex connections, and square-to-rounds, covering every project component.
Does Ensign Ductwork Take-off handle revisions to drawings?
Revision Management lets you upload new drawings, track changes, and keep all duct quantities accurate as designs evolve.
What kind of training is provided?
Ensign offers one-to-one training for ductwork contractors, helping even those with no IT experience get started quickly.
Does it work with both rectangular and circular ductwork?
Ensign Ductwork Take-off supports rectangular, circular, flat oval, fire-rated, and pre-insulated ductwork, ensuring all types are measured accurately.
Is Ensign a member of ADCAS, the ductwork trade body?
Yes, Ensign is a member of ADCAS, demonstrating our commitment to ductwork best practice and ensuring our software meets contractors’ real needs.
How does Ensign Ductwork Take-off help meet deadlines?
Ensign Ductwork Take-off applies TR19 and DW144 automatically while generating bends, angles, supports, and stiffeners as you trace. By eliminating manual counting and rekeying, ductwork contractors save up to 80% of take-off time and submit compliant, fully priced tenders on time.
AWARD-WINNING
The best ductwork take-off software is the one built specifically for the trade. Ensign is the UK’s only dedicated ductwork take-off software, trusted by over 1,000 contractors, established in 1980, multi-award-winning, protected by 3 patents, backed by nearly £1m of annual R&D, and rated 4.9/5★ on Google.
Ensign applies TR19 cleaning rules, DW144 standards, and Fire-Rated specifications automatically — adding access doors, supports, flanges, stiffeners, and bends with correct angles as you trace runs. This ensures every schedule is accurate, compliant, and fabrication-ready.
With direct integration into Ensign Estimating, ductwork contractors save up to 80% of take-off time, cut printing costs by as much as £20,000 per year, and submit tenders that are faster, more reliable, and more competitive.