We repair damage from A-Z to sandwich panels and cladding
+31 (0)548 522040
  • 34 wij repareren allerhande coating problemen
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  • We repair all sorts of coating problems.

  • Big projects

  • Painting roof tile panels

  • Damage to your facade panels.

  • Repair of large damages

  • By passionate experts

  • Your partner in expert repairs of collision damage.

  • We repair weathered facades.

  • Major damages repaired in expert fashion.

  • Van Heemskerk cleans and preserves your property.

  • We have the knowledge and the know-how.

  • Removed graffiti.

  • Our working method is recognised by insurance companies

  • Claiming damages

  • Painting of discoloured roofing sheets

  • Your damage, our speciality.

  • Painting of sandwich panels

  • A suitable solution for every project.

  • We treat the chalking of your facade systems.

  • Your roof expertly painted.

  • Repairing facade panels

  • We are the right partner for restoring major damages to your facade.

  • Van Heemskerk restyles your property.

  • Repairing scratches in your plates or profiling

  • Van Heemskerk expertly repairs your damages.

  • Renovation of your commercial property

  • Van Heemskerk is an expert in painting sheet piling plates.

  • We repair many different types of damage to prepainted steel.

  • Repairing sandwich panels.

  • Van Heemskerk handles loose coatings.

  • Applies new coatings to roofing sheets

  • Cleaning of facade panels

  • Your partner in repairing damage to facade panels.

  • Repair loose coating

  • Painting of industrial halls

  • Van Heemskerk has the appropriate solution for all types of damage.

Blistering of sandwich panels

Blistering / bending is caused by thermal forces that occur in a sandwich panel as the result of a so-called thermoshock. This causes the outer skin to become detached from the PUR- PIR / EPS/ mineral wool insulation resulting in hollow spaces being created behind the outer sheet. After heating up, this space will expand and form a blister, swelling or bend.

Blistering in panels Blistering in panels

Blistering in panels

Blistering in panels is evident when:

  • Thermoshock occurs, this can be on building site but also during production.
  • Forced tension, bending, hollowing during assembly, uneven surface, after heating up the stresses possibly cause imperfections.
  • Darker colours of panels increase the temperature of the outer sheet, this can cause more tension.
  • A thin steel thickness of outer sheet can cause more imperfections and the chance of blistering is much higher, cheaper isn't always better.
  • Detached foam to outersheet during production.
  • Less profile in the outer sheet ( flat panels) gives less strength.
  • Problems of cooling down the panel during production.

Blistering of sandwich panels Blistering of sandwich panels

Test set-up, panels are heated

Blistering of sandwich panels Thermoschock.jpg

Deflection due to heating / Thermoshock simulated

Detached outer skin, location where detachment occurs is visible / Folding Detached outer skin, location where detachment occurs is visible / Folding

Detached outer skin, location where detachment occurs is visible / Folding

Resultaat_na_verwijdering_buitenhuid.jpg Inside of panel after folding / Detachment is visible on inside of outer skin

Inside of panel after folding / Detachment is visible on inside of outer skin

Thermo diagram

Thermo diagram

Where does this occur?

In many cases, blistering or folding occurs on the facade, and on the section of a building that receives the most sun-hours (south facade).

What is the risk?

Due to warming up, the blister will become increasingly bigger and thus also become more detached, so that the panel will have to be replaced.

Can it be repaired?

Depending on the size and cause, most blisters can be repaired. We have developed 2 techniques for this:

  1. Vacuum bonding technique
  2. Comprehensive damage repair by fixing, filling, spraying

Vacuum binding technique

1. Vacuum binding technique

Repairing damaged facades

2. Repairing damaged facades

Van Heemskerk Damage Repair

Van Heemskerk has the expertise and the experience to detect blistering (already at an early stage) and to professionally treat it using the correct materials and techniques.

We repair around the globe in many country's, distance is not a problem. We can provide a quick advice and solution.

More information?

info@vanheemskerk.nl | +31(0)548 522040

Or request a quotation

Contact details

Jutestraat 2
7461 TR Rijssen
The Netherlands

info@vanheemskerk.nl
Tel: +31(0)548-522040
Fax: +31(0)548-544704

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