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Choose your New Roof

The roof you select can completely transform the look, feel and even the value of your home. As well as the overall visual effect you want to create, you’ll need to consider some functional elements – like how close you are to the sea or whether it snows where you live.

And, if you are changing your roof to a different material, you might need to consider the support structure that will be required.

Where to start

We’ve made it super easy to navigate through the different types of roofs available so you can choose the style and colour that will best suit the look of your house and meet your functional requirements.

Start with your current roof

Do you like the style, colour and material of your current roof? What do and don’t you like about it? If you want a change, consider that some local authorities require consent for a different style of re-roof, others do not. Check with your architect or your local council.

Take a walk with your phone

Keep an eye out for roofs that you like the look of in your neighbourhood or on your way to work. Or use Google StreetView. Think about style, colour and material.

Get inspired

Take a look at our gallery and do a search online for styles that you like and save or print these noting the product name and colour if available. You can also find inspiration on our Instagram and Pinterest pages.

Get to know the benefits of roofing materials

Different roofing materials have different advantages & disadvantages. Check out the pros & cons below.

Finding ideas for your new roof

So you're renovating, how exciting! And maybe a little overwhelming? Especially when you consider that your roof can form 30% of your street frontage. Let us help you find the inspiration for your new roof.

We've got plenty of residential project imagery to get your ideas flowing here.

Check out our case studies to get inspired by stories of other homeowners roofing journey here.

We’ve got tips, inspiration & all the product info you’ll need to turn your new roof dreams into a reality. Follow us now.

Choosing the right roof is a big decision & we understand the importance of style & substance. Welcome to creating your beautiful home with Dimond Roofing. Explore our Pins now.

Choosing the right roofing material

Different roofing materials have different advantages & disadvantages. Weigh up the pros and cons below to choose the right roof material for your home.

LONGRUN STEEL
PROS
  • No joins from ridge to gutter
  • Lightweight
  • Able to be cut
  • Can be curved
  • Choice of colours
  • Different substrates (material & coating that your roof is made from) available to suit different environments
  • Easily painted over
  • Easy to install
  • Concealed clip-fixing systems available
  • Can collect rainwater from your roof
CONS
  • Min roof pitch 3°
  • Need to avoid contact with dissimilar metals (contact with certain types of metal may lead to corrosion)
  • Entire old roof needs to be removed before new roof installed
CONCRETE TILES
PROS
  • Long life
  • Do not corrode
  • Easy to overcoat
  • Low rain noise
  • Easy to replace a tile in a run
  • Can collect rainwater from your roof
CONS
  • Heavy
  • Need increased structural supports
  • Minimum pitch 17.5°
  • Small colour choice
  • Need underlay in high wind zones
  • Only secured at one point in the top of the tile, so can lead to water getting in
  • Can crack over time
PRESSED STEEL TILE
PROS
  • Lightweight
  • Strong under high wind
  • 50 year durability
  • Installed to a high standard if done by specialist installers
  • Small modules mean it’s easy to replace the roof without opening up the whole roof
  • Easy to replace a tile in a run
  • Colour fast
  • Lightweight
  • Able to be cut
  • Choice of colours
  • Easily painted over
  • Can collect rainwater from your roof
CONS
  • Minimum roof pitch 12°
  • Shake and Shingle style minimum roof pitch 15°
  • Need to avoid contact with dissimilar metals (contact with certain types of metal may lead to corrosion)
  • If replacing concrete tile with pressed steel tile, need to re-fasten rafter to top plate
CLAY TILES
PROS
  • Look great when new
  • Bold shape
  • Do not corrode
CONS
  • Heavy
  • Expensive
  • Crack easily
  • Get dirty very quickly
  • Lose water tightness
  • Fastened by wire
  • Vulnerable to hail damage from hail above 30mm in diameter
TIMBER SHINGLE
PROS
  • Natural Look
  • North American style
CONS
  • Costly
  • Rot and leak over time
  • Fire risk
  • Uses treated timber or cedar
  • Steep roof pitch only
  • High maintenance
ASPHALT SHINGLES
PROS
  • Low skill install level
  • Distinctive look
  • Does not corrode in salt air
CONS
  • Must be laid on a ply substrate
  • Costly
  • Lose glue adhesion over time
  • Blow off in high winds
  • Unproven long term in the NZ environment
  • Vulnerable to hail damage
  • High maintenance
Choosing a colour

The roof is a large part of a home, so choosing a colour can be a big decision for a homeowner. Here are some ideas from the experts to help you choose your roof colour.

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Roof colours for painted homes

Experiment with contrasting colours or choose subtler differences when picking your roof colour. The one thing you want to avoid is an exact match. The difference in colour is what makes an exterior colour scheme work. If you’re repainting your house as well, consider choosing your roof colour first, as there are more paint choices than roof colours available. Remember a roof provides around 30% of the overall visual effect of your house so it’s important to get the colour right! Put samples of the roof colour swatches against your painted walls to get the right match.

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Roof colours for brick homes

Take a very close look at your bricks and identify the main colour of the bricks first. Then look for tones of that colour in your roofing material. All it takes is that hint of colour to tie the two elements nicely together. Get samples of your bricks, if you can and of the colour you’ve chosen for your mortar, so you can lie them next to your roof colour swatches and see what they’re going to look like.

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The details

You'll be amazed by how much of a difference the details like gutters, fascia, eaves and downpipes make. Most colour consultants agree that matching gutters and roof colours is the best approach because, with few exceptions, gutters and downpipes are not stylistic elements of the house and the less noticeable they are the better.

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Heat and sunlight on your roof

Your roof will absorb heat from the sun and transfer it to your house. Lighter colours are more reflective than darker colours, so if you go a few shades lighter in your choice of roof colours, you can help keep your house cooler. You don't need to go overboard and choose a white roof, though. Don’t forget about insulation either as this is your best protection against heat and cold.

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Other tips for choosing a colour

The profile and pitch of the roof as well as the environment your house is in can play a substantial role in the overall look of your home. For long run roofs (e.g. corrugate) check out our full colour range.

Once the roof colour has been chosen a simple tip to ensure that it works effectively with the rest of the home is to repeat the same colour in smaller amounts around the property in up to three different locations (e.g. the letterbox, the garden shed and the garage door or the front fence). Placing the colour in other areas, particularly at the front of the property, will give the home a balanced feel.

Don’t rely on the colours in a brochure; it’s hard to match printing to actual paint, so ask for swatches of the colours. To test out colour options on your home, you can download the ColorCote® Roof Visualiser App from the Android and Apple app stores.

ColorCote® Environmental Chart

Environment

Some roofing materials require special fasteners, coatings, reinforcement or maintenance for extreme conditions, so your roof might cost more and take longer to fit if you live by the sea or in a high-wind zone. The environmental factors will also have an impact on your substrate materials for longrun roofs.

Wind
  • High wind zones impact the number of fixings required and the spacing of purlins.
  • Check your wind zone on the council wind maps.
  • Consider your property’s proximity to cliffs, gorges, oceans and ranges.
Earthquake Zone

Consider the weight of the roof, heavy roofs can cause injury during an earthquake, a lightweight roof option will perform better in earthquake zones.

Geothermal
  • Proximity to open bores impacts substrate and coating for longrun roofs. Open bores also impacts on the lifespan of a roof, due to the harsh nature of the environment.
Hailstorms
  • If where you live is subjected to heavy hailstorms you need to consider this, clay and concrete tile can break in a hailstorm, whereas steel tile and longrun may only dent.
Snow
  • Check that the pitch of your roof is designed to handle snow melt.
  • Check the elevation of your site, and the impact of snowfall.
  • Consider gutter capacity, and if snow straps are necessary to hold the extra weight from snow melt.
  • Think about the effects of snow sliding off your roof (e.g. pitch of roof over doorways and windows).
Marine/Coastal
  • Very Severe Marine describes a beachfront environment, going from the water’s edge to at least 100m inland, although this environment can extend inland for several hundred metres.
  • Severe Marine begins anywhere from 100-400m from the coast but can extend far inland in some areas of NZ.
  • Marine environments can vary depending on prevailing wind conditions and location so use the above as a guideline only.
  • Check your substrate is appropriate for your environment.
  • Check what regular maintenance is required.
  • For longrun consider a more corrosion resistant substrate if you are near the coast e.g. aluminium near breaking surf (Very Severe Marine) or a substrate with magnesium alloy if in a Severe Marine environment (refer to our environment chart for advice on longrun substrates).
Other things to consider
Substrates

The substrate of a roofing product refers to the base material and metal alloy coating that then has paint and sometimes additional textural materials (e.g. in the case of some tile products) applied to it. This is the base material that is then formed into shapes, known as profiles (like corrugate) by roofing manufacturers, like Dimond Roofing, who will also cut it to size. Locally Longrun is often known as colour(ed) steel. In New Zealand, both Colorsteel and ColorCote are local manufacturers of substrates for longrun roofs.

Steel Tile Substrates

Pressed steel tile roofing begins with a steel substrate, coated on both sides with a protective layer of aluminium-zinc. Satin finish tiles, have a topcoat of ultra-tough polymer acrylic applied. Textured tiles are finished with a polymer bonding basecoat, granulated natural stone and a clear acrylic overglaze.

Longrun Substrates

There are three common substrate options for longrun metal roofing. These include a steel base layer onto which either a zinc aluminium coating is added, or a coating of zinc aluminium and magnesium is added, for superior corrosion resistance. The third option is a marine-grade aluminium base layer.

There are two different paint systems which may be added to any of the three substrates above, depending on the environment it is designed for (e.g. roofs in geothermal areas or by airports may require a more protective paint system).

For an easy way to find out the best material and coating for your roof check out the ColorCote® product range or complete the warranty enquiry form to determine the right product for your home.

Guttering and downpipes

Did you know that your gutters don't have to be plastic, but are also available in metal to match your roof? When picking your rainwater system, remember to think about the style of gutter you want, your fascia and your downpipes to complete your home in style. You will also need to make sure your gutters are able to deal with the amount of rainfall in the area you live in, your roofer or builder can help you work out which gutter and rainwater system will meet your needs.

Insulation

When you’re replacing your roof, it’s a good idea to check your insulation. The roof is your top priority when it comes to insulating your home. This is the area you can make the most impact, since warm air rises, much of a home’s heat is lost through the roof.

It pays to check:
If your insulation is at least 12cm thick
If your insulation covers your whole ceiling and there are no uninsulated areas
If your insulation has gaps in it or gaps between pieces
If your insulation has been squashed or tucked underthings
If your insulation is wet or damp
If your insulation has been damaged by rodents or birds

You’ll find it cheaper to replace your insulation when your roof is off than trying to replace it through a ceiling cavity. Check out Pink® Batts® handy guide to measuring your insulation thickness available here.

Checking your insulationUpdated June 2020
The Next Step

There is a lot to consider when choosing a new roof. If it all seems a bit overwhelming, then contact an installer, they’ll be happy to talk you through all the options and answer any questions.

Once you've got ideas about your new roof, your style and colour, it's time to get an estimate. To understand the estimating process check out step 3.

Estimate