Sealing also fine, and often better, without PUR foam
“Without PUR or polyurethane, builders are no longer able to seal homes properly”. This statement was written in the De Telegraaf newspaper in response to major fires in a PU plant in Germany and China, which caused global production to take a hit. But is it true that it’s no longer possible to seal buildings without PUR or polyurethane? Our specialists in synthetic materials don’t believe this to be the case. After all, they have an alternative that is readily available and works even better: PE foam.
PUR foam has disadvantages too
PU foams are mega popular in the construction industry. You won’t find a building site where there isn’t a box of empty cans of PUR foam lying about somewhere. And that’s no surprise, because it’s very easy for building site workers to make a seal using PUR foam. However, working with PU as a sealant is no longer purely beneficial.
Disadvantages of PU foam
- has a limited service life, so holes may appear in the seal after a number of years;
- ages quickly under the influence of weather conditions;
- has limited elasticity, so it can tear without anyone noticing;
- is an open-celled foam, which moisture can pass through from outside to inside;
- tends to go to waste, because more material is often sprayed than is actually necessary;
- is non-recyclable.
The alternative is PE foam
Our specialists offer alternatives that have considerably better mechanical properties. What’s more, they are also a bit better for man and the environment, because they use polyethylene (PE) as the basis for seals. Foam products are made from PE, such as sealing tape for door and window frame joints.
Benefits of PE foam
- closed cells, making it air and moisture proof;
- long service life;
- permanently elastic and won’t tear over time;
- resistant to extreme weather conditions such as torrential rain;
- no additional material wasted;
More applications of PE foam
There are also many more applications where PE is a better alternative to PU. Want to find out more? Contact our specialists using our online contact form.