External Insulation: Atlas vs Weber

milout

Hi all,

We have two quotes on the table with about 5k of difference which is huge.

The cheap quote is using the Atlas external insulation system and the more expensive uses Weber.

Is there much a difference?

Cheers

Calahonda52

Most of us here can do basic math so why not tell us the two prices and the area involved, including single or two storey etc.
5k on its own is meaningless.

The other thing you need to compare is the performance of the packages
For example, this is for one of them, and while the language is a bit strange in places, you need to compare.

Of course, it all comes to nothing if not done properly by skilled trade-ins with the correct materials

System Properties
Specification of the external insulation system and its individual parts ensure that all technical, usable and utilisation requirements assumed for the intended use are met by correctly designed and constructed thermal insulation.
In respect of reaction to fire, XXXX external insulation system has been classified according to EN 13501-1 as:B – s2,d0 for a system with polystyrene board not exceeding 250 mm thickness, finished with XXXX CERMIT or XXXX SILKON; C –s2,d0 for the system with polystyrene board not exceeding 250 mm thickness, finished with XXXX CERMIT or XXXX SILKON.
Water absorbability of the reinforced layer and individual layer and individual finishing layers specified after 24h in each variant does not exceed 0.5kg/m2; therefore, the system is resistant to freeze-thaw cycles. XXXX external insulation system is also fully resistant to thermal-humid cycles. In relation to the impact strength, regardless of the arrangement of finishing layers (with one layer of glass fibre mesh), the system has been classified for III utilisation category.
If correctly installed, the external insulation system prevents surface and internal water vapour condensation. Diffusion resistance, expressed in equivalent thickness of air layer Sd for the least favourable arrangement of the finishing layer in the system (including a paint coating) is only 0.49 m. The manufacturer declares that adhesion between the reinforced layer and thermal insulation (EPS), and the adhesive and thermal insulation is no less than 0.1 MPa, where as between the adhesive and substrate (concrete) is no less than 0.6 MPa.
The manufacturer declares that adhesion between the reinforced layer and thermal insulation (EPS) and the adhesive and thermal insulation is no less than 0.1 MPa. Thermal resistance of the finishing layer of the insulation system (the reinforced layer with the render coating) render is ca. 0.02 m2 K/W.