Primer undercoat
The professional product for counter battens
Nail sealing tape DSK – seals nail points from the inside out
Nail sealing tape is a double-sided adhesive, carrier-free bitumen tape – no aluminium or fleece top layer, just pure bitumen compound. This makes it the ideal product for a specific task: sealing nail penetration points. The tape is placed under the counter batten before screws or nails are driven through the underlay membrane. When the fixing passes through the tape, the elastic bitumen compound closes around the nail or screw – the penetration is permanently watertight.
DSK 50 mm
For 48 mm and 50 mm counter battens – the most common counter batten size in pitched roofs. Bestseller in this category. EUR 7.60 / 10 m (EUR 0.76/m).
To DSK 50 mm → 60 mm battenDSK 60 mm
For 60 mm counter battens and connections where 50 mm is insufficient. EUR 8.90 / 10 m (EUR 0.89/m).
To DSK 60 mm → Wide coverage ★DSK 100 mm
For wide counter battens, double coverage or profiles and connections requiring maximum surface coverage. EUR 14.90 / 10 m (EUR 1.49/m).
To DSK 100 mm →All widths at a glance
DSK 50, 60 or 100 mm – which width for which application?
| Width | Typical application | Price / 10 m | Price/m |
|---|---|---|---|
| DSK 50 mm ★ | Standard counter batten 48/50 mm, nail points pitched roof | EUR 7.60 | EUR 0.76/m |
| DSK 60 mm | 60 mm counter battens, wider battens | EUR 8.90 | EUR 0.89/m |
| DSK 100 mm ★ | Wide counter battens, profiles, aluminium and plastic connections | EUR 14.90 | EUR 1.49/m |
Installation under the counter batten
How nail sealing tape is installed
Lay the underlay membrane
The underlay membrane is laid as normal. The fixing points for the counter battens are left open at this stage – nothing is fastened yet.
Apply nail sealing tape
Peel the lower protective film from the DSK nail sealing tape and bond it to the underlay membrane – exactly where the counter batten will lie. Leave the upper protective film on for now.
Place counter batten and fix
Peel the upper protective film, place the counter batten and press down – it bonds immediately. Then drive screws or nails: they pass through the batten, the bitumen tape and the underlay membrane. The bitumen compound closes elastically around each fixing point, sealing permanently.
Why seal nail points?
Every nail is a potential leak point – DSK closes them permanently
An underlay membrane without nail sealing tape has a tiny opening at every fixing point. In extreme driving rain or wind, moisture can penetrate over the years – initially invisible, then causing damage to insulation and structure. Nail sealing tape is inexpensive, quick to install and closes these weak points. The same principle applies to flat roof screws and mechanical fixings on bitumen membranes.
Frequently asked questions
Frequently asked questions about nail sealing tape and double-sided bitumen tapes
What is the difference between nail sealing tape and bitumen aluminium tape?
Bitumen aluminium tape bonds on one side and has an aluminium top layer – it is stuck onto surfaces to seal from above. Nail sealing tape DSK bonds on both sides and has no carrier – it is placed between two surfaces (underlay membrane and counter batten) and closes elastically around nails and screws.
When is nail sealing tape used?
Primarily in pitched roofs under counter battens: the tape seals points where screws or nails pass through the underlay membrane. Also used for bonding aluminium and plastic profiles outdoors and any application requiring double-sided adhesion and sealing.
What does "carrier-free" mean?
Carrier-free means the tape consists only of bitumen compound – no aluminium carrier, no fleece, no plastic film. The bitumen compound has a protective film on both sides. This allows the compound to close around a nail or screw as it penetrates – a tape with a rigid carrier could not do this.
Which width do I need for my counter battens?
The tape width should match the counter batten size or be slightly wider. For 48/50 mm battens use the 50 mm DSK; for 60 mm battens use the 60 mm DSK. The 100 mm tape is suitable for wider battens or when generous coverage is required.
Can DSK nail sealing tape also be used for flat roof fixings?
Yes. For mechanically fixed flat roof constructions, sealing washers or nail sealing tape are placed under screw heads. DSK nail sealing tape acts as a seal that closes around the screw and prevents water ingress.
Permanently seal nail penetration points
Choose the right nail sealing tape now.
Double-sided, carrier-free, permanently elastic – for counter battens, profiles and outdoor connections.