GOK, GOK-N, GOK-PLUS-N + WBT Roofing fixing system

Pre-assembled telescopic fastening system for concrete substrate.

Features and benefits

  • Impact-resistant material used ensures constant mechanical properties over the lifetime of a roof. Also, retains its properties over a wide temperature range. 

  • The cone’s optimal shape facilitates speed and ease of installation through the thermal insulation.
  • Internal sleeve design allows pre-assembly with any Rawlplug roofing screw, shortening installation.

  • Hardened screw's thread surface. High quality anti-corrosion coating guarantees resistance of 15 Kesternich cycles.
  • The shape and type of screw's thread is designed specifically for connecting to concrete and wood. The drill point is designed to provide a fast and hassle-free installation. Sharp point of the drill prevents movement of the surface of the fixture.

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    Product information

    Product Code

    Plastic sleeve

    Fixture

    Diameter

    Length

    Plate diameter

    Min. thickness

    Max. thickness

    d

    L

    D

    tfix

    [mm]

    GOK-015

    GOK-015-N

    GOK-PLUS-015-N

    15.5

    15

    50

    30

    270

    GOK-035

    GOK-035-N

    GOK-PLUS-035-N

    15.5

    35

    50

    50

    290

    GOK-065

    GOK-065-N

    GOK-PLUS-065-N

    15.5

    65

    50

    80

    320

    GOK-075

    GOK-075-N

    GOK-PLUS-075-N

    15.5

    75

    50

    90

    330

    GOK-085

    GOK-085-N

    GOK-PLUS-085-N

    15.5

    85

    50

    100

    340

    GOK-095

    GOK-095-N

    GOK-PLUS-095-N

    15.5

    95

    50

    110

    350

    GOK-105

    GOK-105-N

    GOK-PLUS-105-N

    15.5

    105

    50

    120

    360

    GOK-125

    GOK-125-N

    GOK-PLUS-125-N

    15.5

    125

    50

    140

    380

    GOK-135

    GOK-135-N

    GOK-PLUS-135-N

    15.5

    135

    50

    150

    390

    GOK-165

    GOK-165-N

    GOK-PLUS-165-N

    15.5

    165

    50

    180

    420

    GOK-185

    GOK-185-N

    GOK-PLUS-185-N

    15.5

    185

    50

    200

    440

    GOK-225

    GOK-225-N

    GOK-PLUS-225-N

    15.5

    225

    50

    240

    480

    GOK-255

    GOK-255-N

    GOK-PLUS-255-N

    15.5

    255

    50

    270

    510

    GOK-285

    GOK-285-N

    GOK-PLUS-285-N

    15.5

    285

    50

    300

    540

    GOK-325

    GOK-325-N

    GOK-PLUS-325-N

    15.5

    325

    50

    340

    580

    GOK-385

    GOK-385-N

    GOK-PLUS-385-N

    15.5

    385

    50

    400

    640

    GOK-425

    GOK-425-N

    GOK-PLUS-425-N

    15.5

    425

    50

    440

    680

    GOK-525-N

    GOK-PLUS-525-N

    15.5

    525

    50

    540

    780

    GOK-625-N

    GOK-PLUS-625-N

    15.5

    625

    50

    640

    880

    GOK-725-N

    GOK-PLUS-725-N

    15.5

    725

    50

    740

    980

    Product Code

    Screw

    Diameter

    Length

    d

    L

    [mm]

    R-WBT-61050

    R-WBT-61050

    6.1

    50

    R-WBT-61075

    R-WBT-61075

    6.1

    75

    R-WBT-61090

    R-WBT-61090

    6.1

    90

    R-WBT-61100

    R-WBT-61100

    6.1

    100

    R-WBT-61120

    R-WBT-61120

    6.1

    120

    R-WBT-61140

    R-WBT-61140

    6.1

    140

    R-WBT-61160

    R-WBT-61160

    6.1

    160

    R-WBT-61180

    R-WBT-61180

    6.1

    180

    R-WBT-61200

    R-WBT-61200

    6.1

    200

    R-WBT-61220

    R-WBT-61220

    6.1

    220

    R-WBT-61240

    R-WBT-61240

    6.1

    240

    R-WBT-61260

    R-WBT-61260

    6.1

    260

    R-WBT-61300

    R-WBT-61300

    6.1

    300

    Base material

    • Concrete

      Concrete

    • Concrete Slab

      Concrete Slab

    • Timber

      Timber

    Applications

    • Insulation layers to flat roofs to substrate: concrete, timber

    Installation guide

    Installation guide
    Installation guide
    Installation guide
    Installation guide
    1. Drill the hole of required diameter and depth (where applicable)
    2. Lightly insert plastic sleeve into insulation material
    3. Using drilling machine, drive the WBT screw into substrate until fixing depth is reached

    Installation data

    Substrate

    Concrete C12/15

    Thin-walled slab C16/20

    Timber

    Screw diameter

    d

    [mm]

    6.1

    6.1

    6.1

    Hole diameter in substrate

    d0

    [mm]

    5

    5

    -

    Min. hole depth in substrate

    h0

    [mm]

    35

    25

    -

    Min. installation depth

    hnom

    [mm]

    30

    20

    30

    Min. substrate thickness

    hmin

    [mm]

    35

    20

    30

    Min. spacing

    smin

    [mm]

    120

    120

    120

    Min. edge distance

    cmin

    [mm]

    30

    30

    50

    Screw drive

    -

    [-]

    -

    TX25

    TX25

    Downloads

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    Associated products

    • RT-SDSA Drill bits Aggressor SDS plus

      RT-SDSA Drill bits Aggressor SDS plus

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