Heavy Duty Stira Folding Attic Stairs

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Original Stira Specifications

Tested up to 190kg – 418Lbs

Timber used:

Ladder: Southern yellow pine from renewable forests in the United States of America. Treated with hardwearing varnish.
Innerframe: White deal.
Outerframe: White deal.
Trapdoor: Standard, Pine ply, untreated. Trapdoor options available on request.
Pole: Southern Yellow Pine
Wood handrail: Southern Yellow Pine

Metal parts
Wraparound hinge & corner bracket: Anodised steel
Finger hinge: Coated steel
Arms: Coated steel
Springs: Custom heavy duty springs manufactured in Italy
Piano hinge: Custom manufactured in the UK
Metal handrail: Steel

Maximum & Mininum Sizes

Maximum ceiling heights
Manual Stira 10ft (3.04m)
Semi-Automatic Stira 13ft (3.96m)

If you are unsure as to your floor to ceiling height, we can organise a free on-site quotation from one of our Fitters

Maximum/Minimum trapdoor size

The maximum and minimum trapdoor sizes available depend on your floor to ceiling height and which model Stira you are purchasing. The Semi-Automatic Stira can hold larger and heavier units so the trapdoor can be made as large as you wish. The Manual Stira model is limited by the weight the springs can hold.

Manual Stira frame maximums
Maximum frame length 92″ (2.3m)
Maximum frame width 40″ (1m)

Minimum frame length depends on your ceiling height.

Absolute minimum frame length on the 8ft (2.4m) Stira is 39” (99cm). The absolute minimum frame width on an 8ft Stira, with serious modification, is 19” (48cm).

If you wish to find out the absolute minimum opening for ceilings above 8ft 2 ½ “ the Fitter will need to call out to measure up. The Fitter will then discuss the possibilities with our factory Engineers, from there we will send you a quote outlining your options.

Standard Sizes

Most modern homes have standard ceiling heights, and our Fitters often carry these standard sizes with them.

Please be aware while the sizes above are standard your ceiling height may not be, our Fitter will measure up before he starts any job and confirm the price. So you can be assured the Stira we install will be the right fit for your home.
House Type Ceiling Height
Two-story 8ft (2.43m)
Bungalow 8ft 6″ (2.59m)
Pre 1920’s 9ft (2.74m)

The frame size of the Stira depends on the floor to ceiling height, the standard frame size for and 8ft Stira is 24″ or 22” (56cm or 61cm) wide by 41 1/4″ (104.8cm) long.

Most homes have a 24″ (56cm) square opening, making the opening the right size for the Stira is all part of the fitting service and is already included in your quote.

We also manufacture Stira’s with opening sizes of 26″ (66cm), 28″ (71cm) and 30″ (76cm) wide. And as always there are custom options available, so you can make the trap door almost any size to suits your needs.

10 Year Parts Guarantee!

Plus a 1 year guarantee on the labour when Stira Fitters install your Stira Folding Attic Stairs We build our stairs to last! Stira is the only European manufacturer to offer a 10 year parts guarantee. We are proud of our product, with 36 years of Research and Development ensuring it’s the only attic stairs you will ever need to buy. Our 10 year parts guarantee keeps us on our toes, which is why we have made the Stira so robust and dependable. Many other attic ladder installers have come and gone over the past 36 years trying to match our guarantees and quality service. We’ve found that other installers will offer 10 year guarantees, even though the companies which manufactures their ladders only offer a 3 year guarantee. Be sure to always ask to see the actual manufacturers guarantee before buying any attic ladder.

Tested Annually by the British Standard Institute

The Stira Folding Attic Stairs has been rigorously tested and awarded the British Standards Institute Kitemark. The Kitemark signifies a commitment to quality. With yearly testing of our production practices and the Stira itself, it also means the Stira passes UK building codes. 

The Stira Folding Attic Stairs is tested by the British Standards Institute to the European Standard EN14975, weight testing the Stira to 150kg (330lbs or 23 Stone)

In our factory we have weight tested the 8ft manual Stira to 190kg (418lbs or 30 Stone)

Stira Folding Attic Stairs Kitemark Licence No: 74784

Click here to find out more about the BSI Kitemark

Customise the Stira to your needs

The Stira Folding Attic Stairs is fully customisable and we will endeavour to fulfil any request a customer has as long as it doesn’t affect structural integrity.

We can make extra large trapdoors for getting larger items up into the attic, alter the folding of the ladder to work in tight spaces, customise the trapdoor with a variety of finishes, manufacture and install ladders for up to 13ft (4m) high ceilings, add hand rails for extra climbing confidence, and a range of other optional extras.

If you are unsure if your home is suitable for an attic ladder or if you have been told by other companies that an attic ladder wouldn’t work in your home, we may have a solution for you. You can always get a free consultation from one of our experienced Fitters who can assess and recommend the best Stira for your needs.


The Stira ladder is made from Southern Yellow Pine, sourced from managed forests in North America, this is the same timber used in the construction of timber frame houses.

We use SAPS grade timber which is a hard wearing timber which feature minimal knots or defects. Using a strong timber has many benefits over a metal ladder. While the timber is very strong it remains flexible, and unlike metal ladders when the timber steps bend under weight they will return to their natural state. Where as a metal step will gradually distort more and more over time which will go on to affect the usability of the ladder.

The inner and outer frame of the Stira stairs is made from White Deal sourced from managed forests in Northern Europe. This is another strong reliable construction grade timber.

Inner Frame

Stira specifically designed the inner-frame to increase the stability of the attic ladder and make the trapdoor easier to customise. The rigid frame allows us to vary the opening size of the Stira, so that we can provide much bigger or smaller frame widths without affecting the mechanics of the stairs.

Outer Frame

The Stira Folding Attic Stairs features a substantial outer frame which uses 108mm high by 32mm wide White deal Timber. This deep frame gives the Stira a solid attachment to the joists in the attic. The outer frames importance is often overlooked but it is essential as this frame will be carrying the weight of the stairs through the hinges and linkage arms, which are the main load bearing parts of any attic ladder.

Wraparound Hinge

The Wraparound hinge takes the weight of the whoever is using the ladder and is under the most pressure. Stira’s wraparound hinge spreads the pressure evenly, distributing the weight making the ladder stronger and more secure over its lifetime.

Real Steel

We manufacture most of the the metal parts of the Stira in our factory in Co Galway, we make them out of real steel, we don’t use cheap alloys. The parts we don’t make ourselves are custom manufactured specifically for the Stira Folding Attic Stairs out of high quality steel.

Our 10 year guarantee means a 10 year relationship with our customer, because of this we have developed and refined each metal part to be more reliable, easier to use and nicer to look at.