Fast area calculation
Enter slope geometry and get both projected and actual roof areas.
Professional roofing calculator
Calculate roofing materials and costs faster
Tectum turns project dimensions into a clear estimate of materials and costs.
✓ No installation✓ Organised projects✓ Clear reports
Structure
Roof
Ready to calculate
Benefits
Less repetitive calculation. More time for the project.
Material quantities
Estimate sheets, accessories, flashings and technological waste.
Centralised costs
Material, installation, delivery and other commercial costs in one place.
Fewer errors
Formulas and validation replace repetitive manual calculations.
Organised results
Review geometry, sheets, roof lines and the financial summary separately.
Faster quotations
Prepare a clear, simplified quotation for your client.
Visual workflow
From concept to finished roof
Scroll to see project dimensions become a structure, material list and estimate.
- 01
Enter the dimensions
Length, width and pitch define the roof geometry.
- 02
Position the roof
The calculated shape aligns precisely with the house structure.
- 03
Build the system
Rafters, membrane and battens appear in the correct order.
- 04
Install the covering
Sheets and finishing elements complete the roof.
- 05
Get the estimate
Areas, quantities, waste and costs in a clear result.
Construction progress
From dimensions to a material estimate.
Real capabilities
A workspace built for roofing projects
Flexible geometry
Rectangular, triangular and trapezoidal slopes, complex templates and manual 2D drawing.
Sheet optimisation
Sheet quantities and lengths, rows, overlaps, stock and a visual production sheet.
Custom flashings
A visual profile editor with dimensions, angles and developed width.
Costs and quotations
Materials, accessories, labour, delivery, margin, discount and VAT.
Projects and companies
Company-isolated data, roles, shared material catalogues and organised projects.
Client reports
An internal technical report and simplified client quotation with a public view-only link.
Who Tectum is for
For professionals who calculate, sell and install roofs
The interface is designed for fast work in the office or on site, on desktop, tablet and mobile.
Roof installersConstruction companiesMaterial distributorsSales managersSheet-metal manufacturersEstimators and quotation specialists
i
An estimating tool
Tectum estimates material quantities and costs. It does not replace structural calculations or verification by a licensed engineer. Site measurements must be confirmed before materials are ordered.
FAQ
Frequently asked questions
What can Tectum calculate?
Slope areas, sheet quantities, waste, flashings, accessories and estimated costs.
Do I need to install software?
No. Tectum runs directly in a web browser on any internet-connected device.
Can I save projects?
Yes, in the full version. The demo does not save data to the database.
Can I prepare a client quotation?
The full version includes a simplified client report and a public view-only link. Export is disabled in the demo.
Does the calculator perform structural checks?
No. The timber module is indicative and does not replace design by a licensed structural engineer.
How do I get full access?
Complete the form below. We will contact you to configure your company and users.
Request access
Would you like to use Tectum in your company?
Tell us a little about your needs. Access is configured individually for each company.
Try the demo firstStart now
Try calculating a project
The demo is prefilled with sample values. You can get your first result without an account.