What is the minimum and maximum heights for a single flight of stairs?
The minimum height is 230mm (115mm Rise) to a maximum height of 3420mm(190mm Rise).
Stairs cannot be manufactured with a rise below 115mm or exceed a maximum rise of 190mm.
We can manufacture a stair to suit any height between 230mm -> 3420mm.
If you require stairs to suit a height greater than 3420mm you will need to use 2 stairs with a landing to suit.
Stairs cannot be manufactured with a rise below 115mm or exceed a maximum rise of 190mm.
We can manufacture a stair to suit any height between 230mm -> 3420mm.
If you require stairs to suit a height greater than 3420mm you will need to use 2 stairs with a landing to suit.
Can I order stairs wider than 990mm?
Yes, we can manufacture stairs up to 6000mm in width. All stairs with a width over 1200mm will include a centre support. Additional centre supports will also be included for wider stairs. The centre support is used to strengthen wider treads, and prevents timber flex.
How far will my stair extrude from the deck/landing?
This is called “total run”, “the run” or “the going”. The run is calculated by multiplying the number of treads required by the stair going. Eg. 9 Treads x stock stair going (250mm) = 2250mm.
Note: there is also an additional 100mm of stringer that exceeds the bottom tread. Eg. 9 Tread x stock stair going(250mm) = 2250mm + 100mm = 2350mm (Total Run)
Note: there is also an additional 100mm of stringer that exceeds the bottom tread. Eg. 9 Tread x stock stair going(250mm) = 2250mm + 100mm = 2350mm (Total Run)
I need my stair to meet existing posts, concrete pad?
This isn’t a problem at all, if a stock range stair doesn’t meet your requirements, we can modify the height, width or even the going, to meet existing structures.
Eg. Need to meet posts 2500mm from deck? 9 Tread x custom stair going (278mm) = 2502mm + 100mm = 2602 (Total Run)
The additional 100mm will allow you to attach the stairs to the existing post.
Eg. Need to meet posts 2500mm from deck? 9 Tread x custom stair going (278mm) = 2502mm + 100mm = 2602 (Total Run)
The additional 100mm will allow you to attach the stairs to the existing post.
Can I have a tread depth greater than 255mm?
Yes, we can manufacture stairs with a tread depth up 355mm. A tread depth over 290mm will be split tread. Eg. 2 or 3 pieces of timber will be used to make up the required depth.
Can you manufacture stairs to suit elderly or mobility impaired people?
If you require stairs to suit the elderly or mobility impaired, please let us know. We can lower the rise to make it much easier to walk up and even increase the tread depth to allow for a safer travel up or down.
I have purchased a custom stair, assembled it, and now have thin timber pieces left over?
Those thin timber pieces are called fillets. You have ordered a custom stair with a rise above 170mm. The fillets are used to reduce the gap between treads. The gap between treads needs to be 125mm or less. For further information on installation of fillets, please head to the Assembly and Installation section of this website.
Do you supply handrail to suit?
No, currently we do not supply handrail, only stairs. We are however working on a handrail package to suit our prefab stairs
DEFINITIONS SIMPLIFIED
HEIGHT: The measurement from deck to ground level
WIDTH: The overall width of the stair (including stringers)
OVERALL RUN / GOING: The distance the stair will extrude from the deck / landing
TREAD GOING: The horizontal depth of one tread on a staircase
FILLETS: Thin timber lengths used to reduce the gaps between treads
DAR: Dressed all round timber
UNSEASONED TIMBER: Timber that has not been kiln dried. Only air dried
KD: Kiln Dried Timber
BCA: Building codes of Australia
WIDTH: The overall width of the stair (including stringers)
OVERALL RUN / GOING: The distance the stair will extrude from the deck / landing
TREAD GOING: The horizontal depth of one tread on a staircase
FILLETS: Thin timber lengths used to reduce the gaps between treads
DAR: Dressed all round timber
UNSEASONED TIMBER: Timber that has not been kiln dried. Only air dried
KD: Kiln Dried Timber
BCA: Building codes of Australia
What Our Customers Are Saying
"Being a builder for 30 years and always building stairs myself , I found them to be very labour intensive. After a bit of research and some emails I ordered two sets of stairs through my local hardware shop. For me to build these stairs would have taken well over a day and a bit of head scratching. But with Prefab I received them in 5 days and had them built within 20 minutes . I couldn’t be happier with the product and the ease at which they went together . The job was on the coast and I was a bit worried about corrosion, this wasn’t an issue because I went and looked at some that have been in place for over 10 years, they still look great. From now on I won’t be building stairs myself and have told everyone I know how good the product is. Well done boys." - Adam Sadler, Builder
"Running my business in a commercial warehouse with a mezzanine level in North Rocks, Sydney, we only had access to the mezzanine via a dodgy steel attic ladder. After some research at my local Mitre 10 store and some expert advice we purchased a 16 tread stair from Prefab stairs in kit form. We had minimal trouble assembling and erecting the stair and are much happier ,safer and easier moving things up and down the stairs to our new office area. The team at Prefab stairs were great to deal with and very willing to give advice. Shipping from Melbourne to Sydney was only 3 days and the cost saving compared to stairs locally in Sydney. Great product Guys – Excellent Service." - Nick Jovicic – REPAIR ME - Sydney
"Built a deck for my summer project and wanted an easy option for stair access. I found Prefab stairs at my local Mitre 10 store and purchased a three step Merbau stair. Great quality timber, easy to install and looks great. Heaps cheaper than other stairs at different hardware shops. Couldn’t be happier , and I didn’t need to get any trades in to build it." - Barry Beasley Sydney