Retrofitting a Lift to an Older Home Doesn‘t Have to Be Complicated: 1 Square Metre, No Deep Pit – a Screw‑Driven Lift Makes It Easy

When people hear about adding a lift to an older house, their first reaction is usually – too much hassle.

Need to dig a pit? But underneath might be a garage, a waterproofing layer – impossible to touch. Need a machine room? The top floor doesn’t have the space. Need major structural alterations? The house has been home for years – nobody wants to go through that disruption.

These very concerns are precisely where screw‑driven lifts excel.

1. Why Do Traditional Lifts Struggle with Older Homes?

Traction lifts require a pit of at least 300‑500 mm. If your older house has a basement, pipes, or a waterproof membrane underneath, excavation is simply not an option. Hydraulic lifts have low top‑floor requirements but tend to develop oil leaks after three to five years. More critically, both types typically need dedicated machine rooms and substantial structural hoistways – which means high costs, long timelines, and significant disruption for occupied homes.

The most common retrofit scenario for older houses is precisely the opposite: limited space, minimal structural impact, and the shortest possible installation time.

Screw‑driven lifts were made for exactly this.

2. Why Are Screw‑Driven Lifts So Well Suited to Retrofits?

• First, no deep pit required. The screw‑driven lift operates through mechanical engagement between the nut and screw, eliminating free‑fall risk. It does not need buffers or speed‑governor devices. The pit depth can be as little as 50 mm – or in some cases, the lift can be installed directly on the finished floor, using only the floor‑covering height to replace any excavation.

• Second, no machine room or traditional hoistway. Screw‑driven lifts come with an integrated aluminium or steel structure that requires no separate machine room. For older homes, this means no structural modification and no need to “make way” for the lift.

• Third, minimal footprint. The smallest screw‑driven lifts require only about 1 square metre of floor space. ZADIM Sweden has further reduced the minimum footprint to just 860×860 mm – less than the space taken by an ordinary wardrobe.

• Fourth, fast installation with minimal disruption. For occupied homes, installation of a screw‑driven lift typically takes only 10‑15 days. With a self‑supporting structure and no civil works required, daily life remains almost completely unaffected.

Screw‑driven lifts, with their “no excavation, no disruption, short lead time” characteristics, directly address every pain point of retrofitting older homes.

ZADIM: Screw‑Driven Lifts Born for Retrofit Projects

ZADIM offers what can only be called a “tailor‑made” solution for older‑home retrofits:

• Minimum footprint only 860×860 mm – less than 1 square metre

• No deep pit required – Z5000/Z5100 series require only 50 mm; Z6000 series require 50 mm; Z8000 series require only 130 mm; some series can even be installed directly on the ground floor

• No separate machine room – integrated shaft structure included

• No traditional hoistway – no damage to existing structure or finishes

• Full lift range CE certified; factory ISO 9001 certified – globally recognised quality standards

• Four core safety hardware systems combined with nine‑layer safety protection – forming a comprehensive safety defence, from structure to control

• Over 70 showrooms and service providers across Asia‑Pacific, Australia, Europe, and the Middle East – offering localised one‑stop installation and after‑sales service

ZADIM offers multiple series including Z5000, Z6000, Z7000, and Z8000 – covering a complete product line from entry‑level to high‑end customisation, meeting diverse budgets and design preferences.

The biggest fear when considering a lift for an older home is “wanting it but not being able to install it.” Either there isn’t enough space, or structural damage is a concern; either the lead time is too long, or the budget spirals out of control.

Screw‑driven lifts have largely solved all these problems at once – 1 square metre is enough, no pit, no structural damage, and completion in 10‑15 days.

If you also live in an older home and are considering a lift, why not visit a ZADIM showroom and see it for yourself. Sit in one, listen to it – and see how a lift with just 860×860 mm footprint can fit into a confined space. “Going upstairs has never felt so comfortable.” – only those who have truly experienced it will understand.