February 17, 2015

How to use PU Wood Adhesive

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In order to use PU wood adhesive, there’s a simple process you’ll need to follow. We’ve detailed it below & included a video to make the process as easy as possible.

PU adhesive can be used to bond all timbers (wet & dry) as well as concrete, polyurethane foam, expanded polystyrene, and other porous and non-porous materials.

The advantages of PU adhesives are that they are:

  • Thixotropic – they stay where you put them causing less mess
  • Rapid curing – this means less cramping time & it saves labour costs
  • Easy to use – they often come in cartridges that can be inserted into a mastic gun to make application easy
  • Temperature resistant – the adhesives can be used near ovens & light boxes
  • Flexible – their curing time means that they can be adjusted whilst assembly is happening

We have used our own Wood Weld PU Adhesive but others are available.

You will need:

  • Timber cramps
  • PU adhesive
  • A timer

The process is extremely simple. We have split it out into 8 steps but it can be completed very simply in a matter of minutes:

  1. Prepare the cartridge by cutting of the top with the Stanley knife
  2. Place the cartridge in a mastic gun
  3. Prepare the items to be bonded
  4. Squeeze out the PU onto one of the pieces that is to be bonded
  5. Clamp the wood together
  6. Wait for 10 minutes
  7. Remove the clamps & test the joints
  8. Cut off any excess material

To make it easy, we have included our video below detailing these steps:

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