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In three simple steps

Instructions Isofin®

Isofin® protects your walls permanently with just a single application - without any specialist knowledge.
Everything you need: Drill, tape measure, done!

Guaranteed lifelong effect

Can be used in occupied rooms without any problems

Easy to implement without previous experience
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Simple

Preparation

Drill

incl. 12mm masonry drill bit

Marker

Marking the drill holes

Measuring tape

for 25cm spacing
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Step 1 of 3

Create borehole

Diameter approx. 12 mm (masonry drill bit)

a) Position the drill approx. 10-15 cm above the floor,

b) Drill at an angle downwards (approx. 45°), end of the drill hole approx. in the middle of the wall and approx. 10 cm below floor level

Borehole spacing

Drill hole spacing Lateral drill hole spacing 25 cm. The distance of the first drill hole from the wall corner should be 10-12 cm. Bear in mind that a larger cross-sectional area must be impregnated in masonry corners. Depending on the wall thickness, you must drill 1-2 holes and insert bottles into the corner!
Exception: Concrete walls: Drill hole spacing 12.5 cm, halving the normal consumption quantity. Distance of the first drill hole as described above

  • Horizontal barrier

  • Area barrier

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  • Detailed drawing
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Step 2 of 3

Positioning bottles

Replace the bottle cap a) with an injection cap b) Insert the Isofin® bottle into the drill hole c) Depending on the wall thickness, allow the required amount of Isofin® to run into the wall.

The entire contents of the bottle are sufficient for a wall with a thickness of approx. 40 cm. For thinner walls, part of the bottle contents is sufficient. The bottle therefore has awall thickness scale on the side .

Use the calculator to determine the exact quantity of Isofin®.

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  • Detailed drawing
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Step 3 from 3

Close drill holes

Remove the Isofin® bottle from the drill hole once the bottle is empty or has released the required amount of Isofin® onto the wall. Seal the drill hole with some mortar.

Material for follow-up

Simple mortar

to close the holes after drying

Spatula & cup

Mixing the mortar

Protective equipment

Gloves and safety goggles

Calculate Isofin quantity now

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  • Detailed drawing

Please note that the Isofin treatment prevents further moisture from penetrating the masonry. The water present in the masonry must evaporate! Please read our drying instructions.

More detailed descriptions of more complicated applications can be found in the Isofin® application book; easy to understand and clearly laid out, on 105 pages, with 120+ illustrations.

Download manual (PDF)

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The most frequently asked questions about Isofin® processing

How long does it take for the Isofin® bottle in the hole to run empty?

This depends on the porosity of the building material and its water saturation. The more porous the building material, the faster the Isofin® injection. The wetter the building material, the slower the water displacement and the longer it takes for the Isofin® to completely penetrate the wall.

With very fine-pored and very wet building material, this process can take up to 10 days. Only if a bottle is still not empty after 10 days (extremely rare) should you drill a new hole a few centimeters next to it and pour the rest of the bottle contents into the new hole.

I have stones with hollow chambers. The Isofin® ran into these stones in just a few minutes. Can the desired effect still occur?

Don't worry, even in this case Isofin® distributes itself so evenly in the masonry that the desired barrier is created.

The Isofin® first flows down to the next deeper mortar layer and saturates it. From this reservoir (mortar layer), the Isofin® is then distributed evenly in the injection zone of the masonry (see Figures 1 and 2). This ensures a continuous barrier layer.

I treated my cellar with Isofin® 8 weeks ago. The walls are now dry, but I can still see small areas of damp in the corners. What do I need to do?

Just wait a little longer. The visible wall areas have a large evaporation surface. However, the water from the corners must first migrate to these visible areas in order to evaporate. This takes a little more time. So just be patient - the rest will also dry.

I installed Isofin® horizontal barriers and an Isofin® surface barrier in my basement 1 week ago. How long does Isofin® take to spread and when can I set up a drying device?

Isofin® requires about 2-3 weeks for optimum distribution. Nevertheless, you can use a drying device in rooms with horizontal barriers after just 1 week. In rooms with Isofin® surface barriers, you should not use drying equipment until 2 weeks after the barrier has been installed.

Does a drying appliance shorten the drying time?

The wall is dried by evaporation of the water on the wall surface. This makes the room air more humid and evaporation slower. This increased humidity can be reduced either by good air exchange (regular ventilation) or by using a drying device to prevent the drying delay.

A drying unit is therefore useful if sufficient air exchange is not possible or the outside air is too warm and humid (e.g. in summer).

During the drying process, the water in the building material pores must always first migrate to the wall surface in order to evaporate there. This is a slow process that is not accelerated by the drying device itself.

However, an actual acceleration drying can be achieved by using a fan. If this is set up so that the air is blown along the wall, a negative pressure is created on the wall surface. This accelerates the transport of the pore water to the surface.

What do I need to consider if I have concrete walls?

You treat tamped concrete walls in the same way as brick walls. Rammed concrete is very porous, so the Isofin® bottles usually run empty within a few minutes. This is completely normal and does not impair the effect of Isofin®.

For poured concrete walls (e.g. reinforced concrete), please drill at a lateral distance of approx. 12.5 cm (half the normal lateral distance) and inject only half the amount of Isofin® per drill hole. Creating an Isofin® barrier in concrete is therefore somewhat more labor-intensive, but overall does not require more Isofin® than masonry.

For surface barriers in poured concrete, the vertical spacing of the drill holes is also 12.5 cm. The quantity of Isofin® per drill hole is reduced to a quarter of the normal quantity.