add-circular-outlined-button add-cross-outlined-symbol add-square-outlined-interface-button airplane-rotated-diagonal-transport-outlined-symbol alarm-clock-symbol arrow-entering-into-square attach-interface-symbol-of-rotated-paperclip attachment audio-tool-in-silence back-left-arrow-circular-button-outline back-left-arrow-square-button-outline big-map-placeholder-outlined-symbol-of-interface book-outline bookmark-outlined-interface-symbol bottle-gross-outlined-symbol button-of-nine-outlined-circles buttons cellphone cellular-phone-outline center-text-interface-symbol-of-lines chat-comment-oval-speech-bubble-with-text-lines chat-oval-speech-bubbles-symbol checkmark-outline checkmark-square-button-outline checkmark-verify-interface-symbol-button circular-arrow-counterclockwise-rotating-symbol circular-graphic-outline circular-outlined-badge-with-ribbon-recognition-prize-symbol circular-target-shooting-interface-symbol clipboard-square-symbol close-circular-button-symbol cloud-outlined-shape cloud-with-hail-falling cocktail-glass-outline code-signs collapse-two-arrows-diagonal-symbol comment-oval-outlined-balloon compass-orientation-symbol contract-two-arrows-symbol-pointing-the-center-of-square-button copy-two-paper-sheets-interface-symbol crescent-moon-phase-outlined-shape cropping-interface-tool-symbol cross-rounded-outline cross-square-button cube-of-notes-stack double-arrow-horizontal-symbol double-arrow-vertical-symbol double-right-arrows-angles down-arrow-square-button down-arrow-square-outlined-button down-arrow-to-a-square down-arrow down-circular-button download-circular-button download-down-arrow-symbol download-from-internet-cloud download-square-button download-square-outlined-interface-button electrical-storm-weather-symbol electronic-game-machine-outline email-closed-outlined-back-envelope-interface-symbol email-square-outlined-interface-symbol-of-envelope-back equalization equalizer-interface-square-button-symbol event-weekly-calendar-symbol expand-square-interface-button-of-two-arrows expanding-two-opposite-arrows-diagonal-symbol-of-interface facebook fast-forward-double-arrow-outline favourites-star-outline-interface-symbol file-rounded-empty-sheet file-rounded-outlined-symbol film-strip-couple-of-photograms flag-outline fog-at-night-weather-symbol foggy-day-fog-at-sunset-or-sunrise folder-outline fork four-rounded-squares-button full-screen-interface-symbol-of-four-arrows-in-square-button games-machine-outline gear-outlined-symbol giftbox-outline graphical-business-presentation-on-a-screen headphones-audio-symbol hot-interface-symbol-of-fire-flames-outline ico-error images-square-outlined-interface-button-symbol ink-interface-symbol-of-drop-outline instagram label-outline left-alignment left-arrow-curve-outline left-arrow-in-circle-outline left-arrow-line-symbol left-arrow-rounded-outlined-button-interface-symbol left-arrow-signal-outline left-arrow-square-outlined-button left-arrow-with-a-cross like-heart-outline-symbol link-button linkedin list-interface-symbol list lock-circular-padlock-outline-tool-symbol login-arrow-symbol-entering-back-into-a-square login-square-arrow-button-outline map-folded-outlined-paper megaphone-outline-of-amplification-tool men menu-square-button menu-three-outlined-rounded-lines-symbol microphone-outlined-tool microphone minus-circular-button minus-in-zoom-symbol minus-outline minus-square-outlined-button monitor-outline music-note music-rectangular-interface-button-outline music-theme musical-note-outlined-symbol musical-note mute-voice new-email-envelope-frontal-view nine-oclock-on-circular-clock note-outlined-symbol notebook-rectangular-symbol-with-spring notification-bell-outline-interface-symbol-1 notification-bell-outline-interface-symbol opened-email-outlined-envelope-back-interface-symbol oval-empty-outlined-speech-bubble paintbrush-outline paper-airplane-outline pause-outlined-big-symbol pencil-big-outlined-vertical-tool-symbol phone-auricular-outline photo-camera-outline pin planetary-grid-symbol play-triangle-outline portfolio-outline print-interface-button-symbol-of-printer-outline radio rain-weather-cloud-outline-symbol-with-raindrops-lines rectangular-outlined-speech-bubble-symbol recycling-bin rewind-double-arrow-outline-multimedia-button-symbol right-arrow-angle right-arrow-circular-button-outline right-arrow-circular-outlined-button right-arrow-on-a-pole-outlined-orientation-signal-symbol right-arrow-outline right-arrow-square-button-symbol right-arrow-square-outlined-button right-arrow-symbol-in-a-square-outline rounded-rectangular-tool-shape sand-clock save-button-interface-symbol-of-outlined-diskette search-interface-symbol search-oval-magnification-tool-or-spoon-interface-symbol share-social-interface-button shopping-bag shopping-basket-e-commerce-symbol shopping-cart-outline-1 shopping-cart-outline shuffle sort-ascending sort-descending speaker-musical-amplification-outlined-frontal-tool speaker-outline-1 speaker-outline-audio-interface-symbol speaker-outline speaker-outlined-square-frontal-tool-audio-tool-symbol speech-bubble-oval-symbol-with-three-dots square-outline square-shape-design-interface-tool-symbol square-targeting-interface-symbol store-commercial-symbol-outline sun-day-weather-symbol sunrise-or-sunset switch-outlined-symbol switch-outlined-tool-symbol tag-outline television-outline text-alignment-option-button-interface-symbol text-paper-sheet-symbol three-vertical-outlined-bars-symbol timer-timing-tool tool-outline-of-hotel-reception-or-covered-food-tray triangle-equilateral-outline-shape-on-horizontal-line trophy-outline twitter two-arrows two-circular-arrows two-circular-counterclockwise-rotating-arrows-symbol two-drops-sizes-outlined-shapes two-rounded-equal-squares-outlines-symbol unlocked-circular-padlock-outline up-arrow-angle up-arrow-circular-button up-arrow-in-square-interface-button up-arrow-into-square up-arrow-or-flag-shape-big-gross-outlined-symbol up-arrow-square-button-outline up-arrow-square-button up-arrow-with-house-shape-outlined-symbol up-circular-interface-button up-square-button-outline upload-to-the-cloud upload upper-right-arrow-square-button-outlined-symbol user-info-interface-symbol-with-text-lines-at-right-side user-outline-male-symbol-of-interface video-camera-outline wallet-outline weather-interface-symbol-of-a-semicircle-on-three-lines-perspective weekly-calendar-outline-event-interface-symbol weekly-calendar wind-socket-outlined-symbol window-outline winds-lines-weather-symbol wrench-outline youtube zoom-increasing-symbol

GOK, GOK-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.

Product information

Product Code

Plastic sleeve

Fixture

Diameter

Length

Plate diameter

Min. thickness

Max. thickness

d

L

D

tfix

[mm]

R-GOK-015

15.5

15

50

30

270

R-GOK-035

15.5

35

50

50

290

R-GOK-065

15.5

65

50

80

320

R-GOK-075

15.5

75

50

90

330

R-GOK-085

15.5

85

50

100

340

R-GOK-095

15.5

95

50

110

350

R-GOK-105

15.5

105

50

120

360

R-GOK-125

15.5

125

50

140

380

R-GOK-135

15.5

135

50

150

390

R-GOK-165

15.5

165

50

180

420

R-GOK-185

15.5

185

50

200

440

R-GOK-225

15.5

225

50

240

480

R-GOK-255

15.5

255

50

270

510

R-GOK-285

15.5

285

50

300

540

R-GOK-325

15.5

325

50

340

580

R-GOK-385

15.5

385

50

400

640

R-GOK-425

15.5

425

50

440

680

R-GOK-525-N

15.5

525

50

540

780

R-GOK-625-N

15.5

625

50

640

880

R-GOK-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

30

30

Min. spacing

smin

[mm]

120

120

120

Min. edge distance

cmin

[mm]

30

30

50

Screw drive

-

[-]

-

TX25

TX25

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