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title: " Less ballast with Enstall Connect XL Single Zuid"
description: " Calculate lower ballast requirements for flat roofs with the updated Enstall Calculator. Save mounting time and weight on residential projects."
type: information-resource

---

# ESTG

![Newsarticle image - ESTGeu (5)](https://a.storyblok.com/f/288569/2000x2000/ea25c2968e/newsarticle-image-estg-eu-5.png)

Every kilogram of ballast eliminated from a flat roof project translates directly into reduced labor time, lower transport costs, and less physical strain on site. With optimized calculation rules in the **[Enstall Calculator](https://calculator.eu.esdec.com/vendor/?vendor-uuid=ea70139d-fbe5-11ea-bcea-364933bdd0e8)**, projects using the Connect XL Single Zuid mounting system now require significantly less ballast on residential flat roofs.

### Optimized calculation rules in the Enstall Calculator

The updated Enstall Calculator incorporates revised wind tunnel testing data for the Connect XL Single Zuid mounting system. This enables a structural reduction in required ballast weights on residential flat roofs while maintaining full compliance with storm resistance standards and certified safety margins.

This update directly impacts material requirements and mounting efficiency. By applying the refined aerodynamic data, fewer ballast tiles are required per roof, allowing for faster installation cycles and reducing structural load issues on roofs with limited weight capacity.

## Key benefits at a glance

- **Less weight on the roof:** Ideal for residential roofs with limited structural load capacity.
- **More efficient installation:** Save directly on physical effort and shorten turnaround times on site.
- **Fully certified:** Guaranteed storm resistance according to the latest European standards.
- **Calculate directly:** Enter exact building dimensions, height, and roof edges for the most accurate result.

*Tip: Want to perform fast and precise mounting calculations for your next project? Use our dedicated* ***[calculator page](https://www.estg.eu/en-gb/service/calculators-for-your-projects)*** *to plan your mounting materials efficiently.*



## Get started with Connect XL Single Zuid for your next project

Log in to your **personal account** to view all technical specifications, check stock levels, and order your mounting materials directly. Do you have questions? Please **contact us directly**.

## Frequently asked questions (FAQ)

- **Are the updated ballast calculations for Connect XL Single Zuid fully certified?**Yes. The optimized calculation rules are based on updated wind tunnel testing data and comply with all current structural safety and European storm resistance standards.
- **Does the reduction in ballast apply to all flat roof configurations?**The lower ballast requirements specifically benefit residential flat roofs. Exact ballast placement depends on building height, roof edge distance, and local wind zones, which can be verified in the calculator.
- **Can Connect XL Single Zuid be installed on roofs with low weight tolerance?**Yes. By reducing the required number of ballast tiles, the total system weight is minimized, making it an ideal mounting solution for lightweight residential roof structures.





- [Visit our dedicated calculator page](/en-gb/service/calculators-for-your-projects)