Can I seal a leaking penetration from the inside?

Yes, repairing leaking pipe and cable penetrations from the inside of the building is intended, even on a substrate with residual moisture.

When do I need the sealing hose M4082?

With water under pressure. The polyacrylate sealing hose swells on contact with water and, together with Tangit M3000, withstands water under pressure of up to 1 bar; the combination meets DIN 18533 W2.1-E. It is suitable for annular gaps of 8 to 15 mm and pipe diameters up to 90 mm.

Sealing a building service entry: which Tangit M3000 do you need?

Q: How many Tangit M3000 cartridges do I need?

Around 1 to 3 cartridges of 150 ml or 1 to 2 cartridges of 300 ml per penetration, depending on pipe diameter and annular space width.

Comparison 7 min read Baustoff-Held editorial team

Guide: sealing a building service entry – which Tangit M3000?

Contents

What Tangit M3000 actually does
Both variants compared head to head
Detailed comparison
Water under pressure? Then additionally the sealing hose M4082
Recommendation by application
Limits you should know
Tools and accessories
How to proceed when applying
Frequently asked questions

Short answer: For a single house or cable entry, the Tangit M3000 set with 150 ml is enough – static mixer and push-out plunger are included, and it is applied with a standard 1K cartridge gun. For large annular spaces, multi-utility entries or several openings in a row, the 300 ml cartridge is more economical; it is dispensed with the 2K gun PP6. If water under pressure is present, the sealing hose M4082 is additionally placed in the annular gap – only this combination meets DIN 18533 W2.1-E.

What Tangit M3000 actually does

Tangit M3000 is a bi-component polyurethane expanding resin based on MDI/polyol. It is applied through a static mixer into the annular space between pipe or cable and wall, where it foams up in a self-filling way to five times its volume and seals the opening – without electricity, without water, without mixing in a bucket. The foam density is around 200 kg/m³.

Three values from the product data are decisive in practice: pot life approx. 1 minute at 23 °C, functionally firm after 5 minutes, fully cured after 30 minutes. The material is therefore considerably faster than mortar and more dimensionally stable than construction foam, which can shrink afterwards. It is applied between +5 °C and +30 °C; the annular space must be at least 8 mm wide. A substrate with residual moisture is permissible – repairs are possible from the inside of the building without exposing the wall.

Both variants compared head to head

Best-price tip for single cases Tangit M3000 2K expanding resin set 150 ml including plunger and static mixer

Tangit M3000 set 150 ml incl. plunger and mixer

Cartridge, static mixer and push-out plunger in the set
Can be applied with a standard 1K gun – no 2K press needed
Watertight according to DIN 18533, gas-tight according to DVGW VP 601
Radon-tight from 48 mm layer thickness, resistant to pull-out and torsion
Consumption: approx. 1–3 cartridges of 150 ml each per penetration

View set 150 ml

Professional choice for large openings Tangit M3000 2K expanding resin cartridge 300 ml for wall penetrations

Tangit M3000 cartridge 300 ml

Double the fill quantity – approx. 1–2 cartridges per penetration
Static mixer and extension tube are included
Application with the 2K cartridge gun PP6
DVGW-certified (VP 601), gas-tightness confirmed by the Fraunhofer Institute
Partial use possible – no leftovers arise

View cartridge 300 ml

There is also the plain 150 ml cartridge without accessories. It is the refill if a static mixer and push-out plunger or the PP6 are already available.

Detailed comparison

Criterion	Set 150 ml	Cartridge 300 ml
Fill quantity	150 ml	300 ml
Consumption per penetration	approx. 1–3 cartridges	approx. 1–2 cartridges
Tool required	standard 1K gun (plunger included)	2K cartridge gun PP6
Static mixer included	yes	yes, with extension tube
Push-out plunger included	yes	no
Pot life (23 °C)	approx. 1 minute
Functionally firm / fully cured	5 minutes / 30 minutes
Application temperature	+5 °C to +30 °C
Temperature resistance when cured	−40 °C to +90 °C, briefly up to 650 °C
Minimum annular space	8 mm
Certifications	DIN 18533 watertight, DVGW VP 601 gas-tight
Shelf life unopened	min. 24 months, cool and frost-free

Water under pressure? Then additionally the sealing hose M4082

Technical data of the Tangit M4082 sealing hose for water under pressure

Expanding resin alone seals the opening tightly against soil moisture. If water is present under pressure – for example with a high groundwater level or waterlogging at the cellar wall – the sealing hose M4082 belongs with it. It is made of polyacrylate, swells automatically on contact with water and thus withstands water under pressure of up to 1 bar.

Length 80 cm, diameter around 1.5 cm
Suitable for annular gaps of 8–15 mm and pipe diameters up to 90 mm
Lay at least three turns around the pipe or cable
Push it into the annular gap up to around 50 mm behind the outer side of the wall
Enclose completely with Tangit M3000 on both sides

In this combination the system meets the requirements of DIN 18533 (W2.1-E); it was developed together with the Fraunhofer Institute. Important: the sealing hose is intended exclusively in conjunction with Tangit M3000 – it is not a substitute for the resin, but its system component.

Recommendation by application

Repairing a leaking pipe or cable penetration

Set 150 ml. Sufficient in most cases, requires no special tool and can be applied from the inside – even on a substrate with residual moisture.

Multi-utility entry or several openings

Cartridge 300 ml plus PP6 gun. Fewer cartridge changes, more even dispensing, cheaper per litre.

Cellar wall with water under pressure

Resin as required plus sealing hose M4082. Measure the annular gap beforehand: below 8 mm or above 15 mm the hose does not fit.

Closing an unused core drill hole

Set 150 ml. The resin is dimensionally stable and does not shrink afterwards – unlike construction foam, which tends to give way in such openings.

Limits you should know

Pot life approx. 1 minute: Pierce the cartridge only shortly before application. If there is an interruption of more than one minute, a new static mixer must be fitted – the material cures in the old one.
Not UV-resistant: The resin is rot-resistant, but not intended for permanently weathered surfaces exposed to the sun. Cover exposed spots or plaster over them.
Minimum annular space 8 mm: If the gap is narrower, the extension tube cannot be inserted to the deepest point – then the annular space has to be widened.
Substrate clean and grease-free: Clean pipes and bore beforehand, otherwise adhesion suffers.

Tools and accessories

Tangit PP6 2K cartridge gun in use on site

Tangit PP6 2K cartridge gun – all-metal, 370 × 120 × 70 mm, around 0.98 kg, optimised force transmission. Also suitable for Tangit FP550 fire protection foam.
Static mixer – disposable mixer with extension tube; indispensable as a replacement after a break in application.
Push-out plunger – pushes the remainder out of the 150 ml cartridge, also fits Ponal Statik and Ponal Rapido.

You will find all cartridges and accessories in the category 2K Foam & Door Frame Foam.

How to proceed when applying

Clean the pipe and bore, measure the annular space. With water under pressure, first lay in the sealing hose with at least three turns and push it up to about 50 mm behind the outer side of the wall. Pierce the cartridge, screw on the static mixer, insert the extension tube to the deepest point of the annular space and withdraw it slowly while dispensing so that no air pockets remain. After around 5 minutes the spot is functionally firm, after 30 minutes fully loadable. Test criterion: the cured foam sits firmly, cannot be pressed in with a finger and shows no gap to the wall at the edge.

Frequently asked questions

Isn't construction foam enough for a building service entry?

No. Construction foam is neither tested as gas-tight nor permanently dimensionally stable in the annular space. Tangit M3000 is DVGW-certified according to VP 601, watertight according to DIN 18533 and does not shrink after curing. How to use PU foam correctly is explained in our guide to PU foam.

How many cartridges do I need?

According to the product data, around 1–3 cartridges of 150 ml or 1–2 cartridges of 300 ml per penetration – depending on pipe diameter and annular space width. With several openings, better plan one spare cartridge, as the pot life does not allow reordering in the middle of the work.

Do I absolutely need the PP6 gun?

Not for the 150 ml set: thanks to the enclosed push-out plunger it can be applied with any sturdy 1K cartridge gun. The 300 ml cartridge is designed for the 2K gun PP6.

Can I work from the inside without exposing the cellar wall?

Yes, repairing leaking pipe and cable penetrations from the inside of the building is expressly intended – even on a substrate with residual moisture. You should check beforehand whether the cause really lies at the penetration; our guide Waterproofing slurry or bitumen gives hints on this.

Is Tangit M3000 gas-tight?

Yes. The material is DVGW-certified according to VP 601, the gas-tightness was confirmed by the Fraunhofer Institute. From 48 mm layer thickness it is additionally radon-tight.

How long does an unopened cartridge keep?

At least 24 months when stored cool and frost-free. The sealing hose M4082 can be stored indefinitely in its closed original packaging at +5 °C to +20 °C, dry and protected from light.

You will find more topics on waterproofing and joints in the guides overview, for example on bathroom waterproofing. Questions about selection? Baustoffheld, Lindenstrasse 56, 47623 Kevelaer, telephone +49 (0) 2831 - 916 77 03.