A step by step guide to installing Kingspan K17 Insulated Plasterboard for external walls

3 March 2021 Kingspan Insulation New Zealand
How to Install v1

Renovating or refurbishing your home, Kingspan Insulation have created a step by step manual to help guide you through the installation process.

Correctly installing insulation is one of the best ways to make your home more energy efficient, reduce energy consumption and create a healthier and more comfortable environment for building occupants.
Regardless of what time of year is it, when renovating or refurbishing your home, it is important to install insulation correctly. As you know, heat moves from warmer areas to colder areas through heat transfer. This movement is what causes buildings to get colder in the winter (heat leaks out from a building into the colder environment outside) and hotter in summer (heat moves from a warmer environment outside into a building).

To make sure you are installing Kingspan K17 Insulated Plasterboard correctly, Kingspan Insulation has created a step by step manual to guide you through the installation process. Before getting started, it is important to ensure you have the appropriate tools and safety equipment to complete the task. Below is a list of what you will need:  
  • Appropriate Health and Safety equipment including; hard hat, gloves, high-vis vest, work boots, eye protection and dust mask
  • Drill and drill bits
  • Mechanical fixings (screws)
  • Hand saw or utility knife
  • Pencil
  • Caulking gun and caulk
  • Construction adhesive
  • Tape measure
  • Spirit level / Straight edge
  • K17 insulated plasterboard

When it comes to fixing Kingspan K17 Insulated Plasterboard to an existing construction, there are several methods to chose from. The table below outlines the most suitable solution when installing K17 to existing wall elements.

Identifying Appropriate Installation Method

Once you have identified the most suitable solution, you must prepare the surface on to which K17 will be applied too. It is important for this surface to be smooth, making sure to remove skirting boards, cornices, window sills or old adhesive that may impact installation. Using the caulk and caulking gun seal all spaces that will restrict any unconditioned air entering into the parts you are insulating.

It is then time to set out, mark and cut the Kingspan K17 Insulated Plasterboard. Firstly identity and mark out on the existing walls where each stud is positioned. This will help when it comes to applying the insulation board using a mechanical fixing.
When marking out each board it is essential to consider any services; electrical wires, lighting, switches and sockets. Use a measuring tape to measure the distance from the edge of the insulation board to the service, marking all services on the board using a pencil.

To begin cutting, set the K17 Insulated Plasterboard on a flat and safe surface and make sure you are wearing the appropriate safety clothing to minimise the risk of an accident occurring. Cutting should be carried out using a fine toothed hand saw or utility knife to cut through the insulation and paper backing of the plasterboard. To remove the piece you have cut, snap the board face down over a straight edge and cut the paper facing of the plasterboard on the other side.

After you have cut the Kingspan K17 boards to the correct length, it is time to apply them to the existing construction using the most appropriate construction method identified from the table above.


Existing Masonry walls

Using an adhered installation method is the recommended solution when applying Kingspan Kooltherm K17 insulated plasterboard to existing masonry walls. This method involves applying a continuous blob of the construction adhesive around the perimeter wall and ceiling junctions using a caulking gun.

Administer the adhesive to the back of the insulation board or directly to the wall approximately 25mm in diameter at 300mm centres in both directions. Attach the board to the wall making sure to pass through any wires, cable and switches which had previously been marked out when measuring. Once completed, apply pressure to the board to ensure it sticks to the wall and with your straight edge, tap firmly to ensure the board is straight.

Alongside using this adhesive method, it is also recommended that a minimum of two mechanical fixings should be used per insulation board. These fixings should be positioned 15mm from each edge of the board, ensuring the boards are fitted tight to the wall studs.

Existing Framed Walls

A similar installation method can be used when applying K17 Insulated Plasterboard to existing framed walls. This method involves using an adhesive solution but must be supported with a minimum of 6 mechanical fixings.  

Using a caulking gun, apply a continuous dab of adhesive around the perimeter wall and openings as well as to the back of the insulation board or wall (25mm in diameter at 300mm centres in both directions). Press the board to the wall, feeding through any electrical services.

With the board now installed straight, use a minimum of 6 fixings per board to position the board in place. These fixings should be positioned on the tapered edge of the boards, (15mm in from the edge, at the top, middle and bottom).

In the next coming weeks, we will be releasing a step by step installation video to assist you when renovating or refurbishing your home with Kingspan K17 Insulated Plasterboard.

In the meantime, if you have any issues relating to K17, please feel free to reach out to our Technical Services team on 1300 247 235 or email technical@kingspaninsulation.co.nz. They will be more than happy to help and recommend the most suitable solution for your existing construction.