Updated for latest SANS 10400-XA

Building Energy Compliance
Made Simple.

The professional standard for fenestration, insulation, and energy calculations. Generate regulator-ready reports in minutes, not hours.

Start Calculation Try Live Demo

fencalc.co.za/project/1024/fenestration

Dashboard

Project

Basics

Fenestration

Shading

Hot Water

Energy

Windows / Doors Ground Floor

SANS 10400-XA Table 4 Calculation

PASS

Total Area

45.2 m²

Glazing %

18.5% of NFA

Avg U-Value

1.8 W/m²K

Avg SHGC

0.24

Label

Width

Height

Area

Perf

N-W1

1.8

2.1

3.78

U: 2.0 SHGC: 0.35

N-W2

2.4

2.1

5.04

U: 2.0 SHGC: 0.35

E-D1

0.9

2.1

1.89

U: 2.2 SHGC: 0.50

S-W1

1.5

1.2

1.80

U: 2.0 SHGC: 0.76

Showing 1-4 of 12

Complete Compliance Suite

Everything you need to navigate the National Building Regulations efficiently and accurately.

Core Feature

Advanced Fenestration

Calculate aggregate conductance and solar heat gain coefficients effortlessly. Our engine handles orientation factors, shading devices, and complex glazing specs automatically.

U-Val: 1.42

SHGC: 0.28

✓ SANS 10400 COMPLIANT

Pro Reports

One-click PDF generation. Clean, professional, and ready for council submission.

Live Validation

Get instant feedback as you type. Fix compliance issues before you finish the project.

Secure & Cloud-Based

Access your projects from anywhere. Automatic backups, bank-grade encryption, and seamless team collaboration features coming soon.

Start a secure project

Simple, Transparent Pricing

Choose the plan that fits your workflow.

Demo Account

Free

Perfect for testing the waters and small checks.

Try Demo

Single Project
Basic Calculations
Community Support

Professional

R150 /month

For architects and energy consultants.

Get Started

Unlimited Projects
Full Compliance Reports
Priority Email Support
Advanced Exports

Annual

R400 /year

Best value for long-term power users.

Subscribe Annual

All Pro features
Save ~78% vs Monthly
Early Feature Access

Building Energy Compliance Made Simple.