Step 1: Screw in the sleeves

Fit the Indu-Prog universal tool into a cordless screwdriver with the HEX side facing out so that you can install the frame sleeves. Then screw the sleeves into the pre-drilled 14 mm holes in the frame. Screw the sleeves in from the outside of the frame; they must reach at least 15 mm into the frame.

The universal tool is a specially designed installation and adjustment tool for Indu-Prog sleeves – it has a HEX10 at one end for installing and adjusting the sleeves and a TX30 at the other end for driving all the matching Indu-Prog screws.

No pre-drilled holes in the frame? Drill them with a drill bit for frame screws. Drill from the outside of the frame – this reduces the risk of ugly holes on its inside.

Step 2: Position the window

Once all the sleeves are screwed in, stand the window or door on the level screws you fitted in the bottom edge of the opening. Adjust the level screws with the adjustment tool until the frame is straight. Check this with a spirit level. You can find the guide to fitting level screws here.

Step 3: Secure with Pumpbag inflatable cushions

When the frame is standing straight on the level screws, inflate the Pumpbag inflatable cushions, placed between the window and the wall, to centre the frame. Make sure that no cushion is in front of a frame sleeve. The Pumpbag cushions hold the frame in place during installation. Finally, check that the window is plumb in all directions.

Step 6: Fix the frame

Now it is time to drive the Indu-Prog screws into the wall – they go through the frame and the frame sleeve. Choose the screw according to the material of the wall the frame is being fixed to.

First turn the Indu-Prog universal tool round so that the TX end faces out. Then drive an Indu-Prog screw into each hole that has a frame sleeve. Start with the topmost holes, then continue with the bottommost ones. If there are more holes in the middle, fit the screws in them last.

CAUTION! If you are fixing into concrete or brick, you must pre-drill a hole for the screw with a 6 mm diameter drill bit. Drill through the sleeve into the wall.

Step 7: Insulate the gap

Fill the gap between the wall and the frame with gun foam. We recommend Expand gun foam, with an isocyanate content below 0.1%, which provides good sound damping and thermal insulation. It adheres to most materials, e.g. wood, metal, concrete, stone, foam plastics and extruded polystyrene.

Isocyanates – mandatory training!

Because working with isocyanates carries a risk of allergy, since 24/8/2023 anyone who works industrially or professionally with products containing 0.1% or more diisocyanates by weight, or who supervises such work, must complete training. The obligation arises from Commission Regulation (EU) 2020/1149 (REACH, Annex XVII, entry 74).

More about isocyanates