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Product Description

A Trade Strength Wurth Expanding Foam 
​​​​​​Excellent adhesion to most building substrates (except PE, PP, PTFE and silicone)

Increased sound and thermal insulation with mineral wool, cork and glass fibre


No loss of volume and only limited expansion when hardened.

Quick to harden

Fine cell and even foam structure

Resistant to ageing

Resistant against a wide variety of solvents, paints and chemicals

Primer should be applied to porous and absorbent surfaces. PURLOGIC® TOP can be applied with the foam guns PURLOGIC® Xpress, art. no. 08911524 and PURLOGIC® COMBIpress, art. no. 08911526. Other guns are not compatible.

The above application instructions are recommendations given on the basis of our own tests and experience. We recommend that you carry out your own tests before use. Due to the great variety of different applications and storage and processing conditions, we cannot guarantee a particular application result. We will not accept legal liability for any advice or technical information provided by our free customer hotline unless this advisory service and/or technical information is part of the contractually agreed performance owed by us, or the customer service employee acted will fully or intentionally. We guarantee the consistent quality of our products and reserve the right to make technical changes and improvements.
Application area

Secure insulating and filling of window joints, pipe openings, joints, wall joints, wall openings and cavities, such as wall openings, roof finishings, pipe ducts, roller shutter boxes etc. Adheres to concrete, stone, hard PVC, metal and wood. Does not adhere to polyethylene, silicone, PTFE and grease.


Shake can vigorously 20 times before use. The surfaces must be clean, solid and free from dust and grease. Pre-treat highly absorbent surfaces. Adhesion surfaces must be moistened with water before the foam is applied. Moisten again if several foam beads are applied. Screw the can all the way into the gun support – do not screw too far or tilt. Foam continues to expand after application. Immediately remove splashes of foam with PURlogic Clean, art. no. 0892160. Thoroughly clean the gun and valve after use. Always leave the open can screwed onto the gun.


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Wurth B3 Expanding Foam 750ml

Item in Stock (13 Available)

Product Code 08921521