UvalEez
UvalEez
BS EN ISO 6946 compliant

Precise U-value calculations, ready for regs.

From construction layers to compliance checks, get accurate results in minutes — and a fully branded PDF report in seconds.

7-day UvalEez Plus trial · No charge until day 7 · Cancel anytime

External Wall — Build-up
Layer 1
Layer 2
Layer 3
Layer 4
U-value
0.17
Limit
0.18
Status
PASS
Pay as you go
£4.99/ day

Daily Use Pass

  • Full access for 24 hours
  • All U-value calculation tools
  • Watermark-free PDF exports
  • No commitment — pay as you go
Most popular
£11.99/ month

Monthly Subscription

  • 7-day free trial included
  • Unlimited projects & elements
  • Watermark-free PDF exports
  • Cancel anytime
Best value · 2 months free
£120/ year

Annual Subscription

  • Everything in the monthly plan
  • Unlimited projects & elements
  • Watermark-free PDF exports
  • Cancel anytime
  • 2 months free vs monthly

Everything in UvalEez Plus

A mid-price plan built for practising professionals.

Full valuation tools

ISO 6946 methods for homogeneous and inhomogeneous build-ups, air spaces and ground floors.

Unlimited projects & elements

Organise clients and elements into unlimited folders — no caps on saved work.

Watermark-free PDF

Export branded, regulatory-ready PDF reports with no watermark once you’re on Plus.

Live recalculation

U-value and pass / borderline / fail status update instantly as you add layers or change thicknesses.

Future features included

Every Plus-tier release ships to your account automatically — no add-ons.

ISO 6946
Calculation standard
7-day
Free trial
0.1mm
Thickness precision
ADL 2021
Compliance ready

“Cuts our U-value calcs from a spreadsheet chore to a 5-minute job.”

Building physics consultant

“The branded PDF exports are client-ready straight out of the tool.”

Architectural technologist

“The library of verified λ values saved us hunting through manufacturer datasheets on every project.”

Senior architect

“Compliance checks against ADL 2021 give us confidence to sign off designs without a second pass.”

Sustainability engineer

Worked U-value examples

See exactly how UvalEez calculates thermal transmittance to BS EN ISO 6946:2017 for common UK build-ups — each with the ADL 2021 limit and a pass/fail result.

Cavity Wall

A typical insulated masonry cavity wall for a new-build dwelling in England, checked against the Approved Docu…

View worked example

Flat Roof (Warm)

A warm flat roof build-up with insulation above the structural deck, checked against the Approved Document L (…

View worked example

Ground Floor (Floating)

An insulated ground-bearing concrete slab, assessed with the ISO 13370 simplified method and checked against t…

View worked example