Facade membranes & under-roof membranes
Protecting roof & façade
Façade membranes, sub-roof membranes, weather protection – what goes where?
Membranes for façade and roof serve different purposes and differ in vapour openness, UV resistance and mechanical load capacity. The right choice depends on the location, the façade construction and the duration of exposure.
Façade membranes & wall sheathing membranes
Wind- and driving-rain-tight membranes for ventilated façades – for closed façades (Solitex Fronta WA) and open-joint cladding (Targo VENT WI, Solitex Fronta Quattro).
To façade membranes → RoofSub-roof membranes
Vapour-open membranes to protect roof constructions against moisture and wind – laid beneath the roof covering, they allow inward drying.
To sub-roof membranes →Weather protection membranes
Temporary weather protection during the construction phase – protects the shell, insulation materials and structure from rain and wind until the building envelope is complete.
To weather protection membranes → AccessoriesBonding & nail sealing tapes
Tapes and nail sealing tapes for the professional bonding of overlaps and connections in façade and sub-roof membranes.
To bonding products →The most important decision
Closed or open façade – which membrane is right?
The most common mistake when selecting: a membrane for closed façades is used behind open-joint cladding. For joint widths above 10 mm the membrane must be UV-stabilised and approved for visible open mounting.
| Product | Façade type | Max. joint width | Price from |
|---|---|---|---|
| Solitex Fronta WA | Closed façade | No open joints | EUR 2.15/m² (75 m²) |
| Targo VENT WI ★ | Open façade / open-joint cladding | Up to 30 mm | EUR 3.17/m² (75 m²) |
| Solitex Fronta Quattro | Open & closed | Up to 35 mm | EUR 4.29/m² (75 m²) |
| Solitex Fronta Quattro connect | Open & closed | Up to 35 mm + self-adhesive zones | EUR 4.92/m² (75 m²) |
★ Bestseller in this category.
What membranes must do
Three properties every good façade and sub-roof membrane needs
Windtight
Prevents wind from flowing through the insulation and reducing its effectiveness. Particularly important in timber-frame and timber-stud construction.
Driving-rain resistant
Protects insulation and structure against water ingress – waterproof from outside, vapour-open from inside for controlled drying.
Vapour-open
Water vapour must be able to escape outward. Membranes that are too vapour-tight lead to condensation in the construction – causing mould and structural damage.
Specialist retailer with hands-on experience
Façade and sub-roof membranes – advice from practice
As a specialist contractor, we know the requirements for façade and sub-roof membranes from daily use. We stock products from Targo AG Switzerland and pro clima – both manufacturers offer coordinated systems of membrane and adhesive technology for permanently tight and vapour-open constructions.
Frequently asked questions
Frequently asked questions about façade and sub-roof membranes
What is the difference between a façade membrane and a sub-roof membrane?
Façade membranes are installed behind the façade cladding (ventilated façade) and protect the insulation layer from driving rain and wind. Sub-roof membranes are laid beneath the roof covering and protect the roof construction from moisture penetrating from above. Both are vapour-open but designed for different constructions.
Which façade membrane is suitable for open-joint or trapezoidal cladding?
For open-joint and trapezoidal cladding with visible joints, the façade membrane must be UV-stabilised and approved for visibly open mounting. Targo VENT WI is suitable up to 30 mm joint width; Solitex Fronta Quattro up to 35 mm – also for trapezoidal cladding.
Can I use a standard façade membrane behind open-joint cladding?
No. Standard façade membranes (such as Solitex Fronta WA) are only suitable for closed façades without visible joints. Under prolonged UV exposure, the material degrades and loses its protective function. Always use a UV-stabilised membrane for open-joint cladding.
What is a weather protection membrane?
Weather protection membranes are temporary protective covers for the construction phase – they protect the shell, insulation and structure temporarily from weather. They are not a substitute for permanent façade or sub-roof membranes.
Do I need adhesive tape for façade and sub-roof membranes?
Yes. Overlaps and connections must be sealed with suitable adhesive tapes or nail sealing tapes. We stock matching accessories in the bonding subcategory – coordinated with Targo and pro clima membranes.
What does vapour-open mean for façade membranes?
Vapour-open membranes allow water vapour to escape from inside to outside while being waterproof from outside. This is crucial to prevent moisture from becoming trapped in the construction – which can lead to condensation, mould and structural damage.
Protect façade and roof permanently
Choose the right façade or sub-roof membrane now.
From Targo VENT WI to Solitex Fronta Quattro – for closed and open façades.