Horizontal barrier or surface barrier
for capillary moisture in living spaces and cellars

Renovate damp masonry independently

Lifetime effectiveness guarantee! 

Up to 70% cheaper than a specialist company

For all types of masonry

More about the product

Calculate refurbishment costs

Horizontal barrier & surface barrier
for capillary moisture

Renovate damp masonry independently

Up to 70% cheaper than a specialist company

20-year effectiveness guarantee 

For all types of masonry

More about the product

Calculate refurbishment costs

Trustify review stars will be displayed here!

What is Isofin®?

Isofin is a purely organic, water-free, hydrophobic, polymer-based capillary water barrier that allows you to get your moisture problem under control and save money in the process. Isofin is effective against rising damp and laterally penetrating damp. It penetrates deep into the masonry and forms an invisible barrier that effectively repels non-pressing moisture. By simply inserting the Isofin bottles into pre-drilled holes, the product is distributed evenly, providing complete protection for your home.

In the picture: Horizontal barrier

How does Isofin® work?

Soak joints with Isofin shortly after injection.

One week after injection:
Isofin penetrates from the joints into the stones.

Three weeks after injection:
Only small zones in the core of the stones that are not soaked with Isofin

Determine requirement quantity now

The effect

Isofin® penetrates deep into the masonry and forms an invisible barrier that effectively repels non-pressing moisture. By simply inserting the Isofin® bottles into pre-drilled holes, the product is distributed evenly and thus ensures complete protection. This not only preserves the building fabric of your home, but also increases your well-being through a dry and healthy indoor climate.

The Isofin® distribution explained

Horizontal barrier

Horizontal barrier

Horizontal barrier

Area barrier

>> Swipe left for more pictures

Isofin® - Dry walls for homeowners (DIY)
Isofin® - Dry walls for homeowners (DIY)
Isofin® - Dry walls for homeowners (DIY)
Isofin® - Dry walls for homeowners (DIY)
Isofin® - Dry walls for homeowners (DIY)

Show all product details

Isofin® - Dry walls for homeowners (DIY)

Trustify review stars will be displayed here!

Quick guide

19,90€/bottle

Isofin® horizontal barrier or surface barrier

Saves time and money: only one application. Results visible after a few weeks.

No harmful gases or vapors Family-friendly, even indoors

Preserve the fabric of your home & increase your well-being through a dry and healthy indoor climate.

In stock.

Loading shipping time...

Minimum order quantity 5 bottles (ℹ️ more info)

Determine required quantity now
Title
Your bottle price:
Quantity discount:
Total price:
⚠️ Minimum quantity not reached
We recommend a minimum order quantity of 5 bottles (4 bottles + 1 end bottle = 1m) to avoid problems with moisture migration and to ensure optimum product quality.
Title

incl. VAT shipping will be charged at checkout

Quantity discount

Will be charged automatically.

from 50 bottles

18,90€/pc.

from 250 bottles

17,90€/pc.

As a German manufacturer of the "Isofin®" capillary water barrier, we provide a lifetime guarantee for the effectiveness of the hydrophobic barrier.

Pay conveniently - the way you want

Select your preferred payment method directly in the checkout

0 % financing
(3-24 months)
Payment by installments
(from € 99)
Pay Later
(14 days payment break)
Recommended
Payment by installments
(3-24 months, 0 % effective interest)

All options are conveniently available in the checkout.

Isofin® in use by our customers.
Quick and easy application. See for yourself.

DIY - DO IT YOURSELF

Dry walls in 3 steps

1. drill holes to fit

Start by drilling holes (12 mm) at a 45° angle into your masonry at 25 cm intervals in the damp areas.

2. place Isofin® bottles

Then insert the Isofin® bottles into the drilled holes so that the water repellent can penetrate the wall.

3. allow the wall to dry

After Isofin® has spread, allow the wall to dry. You will be effectively protected against moisture after just a few weeks.

To the detailed instructions

What does the renovation really cost?

With our calculator you can find out immediately:

🔍 How much Isofin® you need

💶 What your waterproofing costs

📉 How much cheaper you drive compared to a specialist company

Save up to 70 % - with guaranteed lifelong effect.

Simply specify the wall area, thickness and corners - off you go!

Start calculator now

Isofin® briefly explained

The video explaining masonry waterproofing with Isofin®

Isofin® in use

Before
Afterwards

Subsequent capillary water barrier with ISOFIN® - the basis for successful refurbishment

Determine requirement quantity now

Do you have any questions?
Get free expert advice!

Hendrik Flügge

  Your expert for building protection - Over 500+ satisfied customers - Free advice

Mobile: 0178 - 12 03 23 5
Immediate consultation now possible!
▲
Mon - Fri: 9:00 - 20:00
Sat & Sun: 10:00 - 15:00

📸 Simply send photos - 💬 Fast response - 🔒 100% free of charge

Chat on Whatsapp

Request a callback

Free of charge: 0800 22 66 245

Damp walls? Wet cellar?
I'll help you right away!

When you call, you will receive free of charge:

1. injury assessment

Professional analysis

2. proposed solution

Tailor-made recommendation

3. cost calculation

Transparent prices

Free download:
The Isofin application manual.

Download our comprehensive application manual here free of charge and benefit from over 55 years of experience in wall dehumidification.

Contents of the manual:

Practical knowledge on 108 pages: Building physics, damage diagnosis and step-by-step instructions - from capillary moisture and pressurized water to special cases.

Market-leading solution: The only manual that covers all common types of masonry and concrete, from brick and quarry stone to cellular and aerated concrete.

Apply it yourself - safely and permanently: Find out how you can dry damp walls with Isofin® hydrophobization without closing pores - for a natural indoor climate and long-lasting building fabric.

Avoid realistic mistakes: Learn to recognize and prevent typical application and planning errors - from invisible damage in vaulted cellars to interlocking building structures.

Download now and get started right away:

Isofin® application manual (5MB)

Operating as a company since 1986

We (Freimuth Bautenschutz GmbH) focus primarily on relevant problems in the field of building protection. In this area, we are both a contractor in Germany and a producer of certified systems and materials for the moisture remediation of buildings.

Lifelong guaranteed effect

Your personal certificate is enclosed

Long-lasting protection. Guaranteed. Trust in the quality of Isofin® - with our lifetime guarantee. It protects your home from moisture in the long term and gives you the peace of mind you deserve. In the unlikely event of a loss of effectiveness, we will provide a replacement free of charge - a clear commitment to our product quality.

All details about the guarantee

Proven effectiveness

With Isofin® you are opting for tested quality. Isofin® has been put through its paces in a long-term study by the independent Materials Testing Office (MPA) in Dortmund and has impressively proven its effectiveness. Trust in a solution that delivers sustainable results and has been confirmed by experts. Protect your home with Isofin® - for a dry, healthy property that retains its value.

More about certification

Trustify review box will be displayed here!

FAQ's - Frequently asked questions

1 What is Isofin® and how does it work?

Isofin is a polymer-based hydrophobic injection barrier that permanently stops moisture in walls. It penetrates deep into the masonry and forms an invisible barrier that prevents moisture from rising or penetrating.

2. can I apply Isofin® myself or do I need a professional?

Isofin has been specially developed for DIY enthusiasts. All you need is a drill and the Isofin bottles, which are already prepared. Detailed instructions are included - no professional required!

3. which wall types is Isofin® suitable for?

To cut a long story short and save a list of several pages: Almost all types of stone, natural stone (quarry stone) and artificial stone (burnt bricks, sand-lime bricks, cement blocks, cinder blocks, etc.) can be treated with Isofin for optimum hydrophobization. There are only two exceptions where Isofin only develops a moderate effect: natural carbonate stone (lime tuff, travertine, marble, dolomite) and sulphate stone (gypsum, barite).

Nevertheless, Isofin can also be used successfully in masonry made of carbonate and sulphate rock. more in the manual.

If you are unsure what type of masonry you have, we will be happy to help you.

4. how long does it take for the walls to dry?

After application, the masonry needs a few weeks to dry out completely. The exact time depends on the moisture content and the wall thickness. The dryness improves continuously and renovation work can start after a few weeks.

5 How long does the Isofin® barrier last?

Once applied, Isofin protects your walls for up to 20 years - with a quality guarantee. The product is designed to work reliably even under difficult conditions.

6 Is Isofin® safe for my home and the environment?

Yes, Isofin is safe. It contains no harmful chemicals and is harmless to both health and the environment. In addition, the fabric of your home remains completely intact.

7 How much does it cost to use Isofin®?

The cost depends on the size of the wall, but Isofin is one of the most cost-effective solutions for stopping damp in the long term. Compared to costly groundworks, you save thousands of euros.

8. does Isofin® also work with mold infestation?

Isofin stops the cause of mold - moisture. Once the walls are dry, existing mold can be removed and the formation of new mold is prevented.

9. do I need to consider anything before using Isofin®?

Yes, make sure the wall is free of heavy dirt or loose plaster. We also recommend that you familiarize yourself with the enclosed instructions to achieve the best results.

10. can I use Isofin® for basements or interior walls?

Yes, Isofin is suitable for both interior and exterior walls. It is ideal for basement walls affected by rising damp.

11. how does our Isofin® product work against capillary moisture and is it also suitable for pressing moisture?

Capillary moisture: Our product is ideal for treating capillary moisture. This condition occurs when moisture rises through the fine pores and cracks in the masonry, similar to the effect of a sponge. This is particularly common in older buildings without or with damaged horizontal waterproofing. Typical signs of this are damp walls, peeling paint and mold growth in the lower wall area.
 

Important: Please note that our product has been specially designed for the treatment of capillary moisture. For problems with pressing moisture, which often occurs in basements or underground buildings where water under pressure presses against walls or floors, we recommend a special waterproofing solution. Pressing damp is often manifested by puddles in the basement or by moisture seeping through cracks and joints and running down walls.
 

Our aim is to provide you with effective solutions for specific problems. Please contact us for further information on sealing solutions for pressing moisture.

view all questions
Isofin® - Dry walls for homeowners (DIY)
Isofin® - Dry walls for homeowners (DIY)
Isofin® - Dry walls for homeowners (DIY)
Isofin® - Dry walls for homeowners (DIY)
Isofin® - Dry walls for homeowners (DIY)

Show all product details

Isofin® - Dry walls for homeowners (DIY)

Trustify review stars will be displayed here!

Quick guide

19,90€/bottle

In stock.

Loading shipping time...

Minimum order quantity 5 bottles (ℹ️ more info)

Determine required quantity now
Title
Your bottle price:
Quantity discount:
Total price:
⚠️ Minimum quantity not reached
We recommend a minimum order quantity of 5 bottles (4 bottles + 1 end bottle = 1m) to avoid problems with moisture migration and to ensure optimum product quality.
Title

incl. VAT shipping will be charged at checkout

Pay conveniently - the way you want

Select your preferred payment method directly in the checkout

0 % financing
(3-24 months)
Payment by installments
(from € 99)
Pay Later
(14 days payment break)
Recommended
Payment by installments
(3-24 months, 0 % effective interest)

All options are conveniently available in the checkout.

Quantity discount

Will be charged automatically.

from 50 bottles

18,90€/pc.

from 250 bottles

17,90€/pc.

As a German manufacturer of the "Isofin®" capillary water barrier, we provide a lifetime guarantee for the effectiveness of the hydrophobic barrier.