The Re-roofing installation process

When you choose Monier, we will be with you every step of the way - from selecting the material to suit your needs right through to the installation. To help you prepare, here is a step by step guide on the roof installation process.

1. Install safety rail

Safety is a priority. Before commencing any work Monier guardrail is installed around the perimeter of the roof to meet current New Zealand health and safety guidelines.


2. Remove old tiles

All the old roof tiles and ridge are removed.


3. Inspect roof

The roof timbers are inspected to make sure the battens are sound.
(As a standard offer, we replace battens and underlay.)


4. Install Underlay*

Roofing underlay used by Monier is a breathable, absorbent, bituminous, self-supporting building paper specifically designed for use in domestic homes. It provides a second line of defence against moisture entry, absorbs condensation that forms on the underside of the roof cladding material,
reducing air movement in roof spaces, and provides protection against the entry of dust and dirt.

5. Install new battens**

If required, new battens are installed ready for the new roof tiles to be laid.

6. Load up new tiles

The new roof tiles are sent up to the roof using a conveyer system.

7. Start laying new tiles

Tiles are laid sequentially up the roof from the gutter line and fixing clips, or nails, are used to secure the roof tiles to the roof.

8. Pointing

Pointing is a flexible material that covers the mortar and comes in a colour that matches the roof tile. It acts as a mechanical fastener, keeping the ridge in place. It is also used to finish the tiles at the gable or edge of the roof.

9. Finish

Guard-rail is removed and the site is tidied and any left-over roof tiles removed.



There are a few factors that will determine the cost of having a new roof installed.

  • What roofing material is being used
  • The size of the roof
  • Underlay
  • The pitch of the roof (it’s steepness)
  • Any special requirements

Together these five things will determine the cost and the time it takes to get the job done.

What you really want to know

  • Time: Construction usually takes around 1-2 days to get a concrete or terracotta tile roof installed. (This all depends on how big your roof is and a number of other factors.)
  • Our roofers provide a comprehensive roofing service. For specialist services, please view the Find a Reseller.
  • How: Call us on 0800 666 437. We’ll help you sort out the details.