Mansard Floor — +20–40% More Building Area Without New Foundation

LGSF mansard addition for apartment buildings, hotels, offices and commercial buildings — from 2 months, no business interruption

No foundation reinforcement
Payback from 10 months
No tenant relocation / business interruption
16+ years of experience · 600+ completed projects · Own manufacturing & design bureau
Trusted by: Radmir Business Center Passage Shopping Center Ozerna Complex Karavan Shopping Mall Tsentralnyi Shopping Center

Your Roof Is Untapped Square Meters

A mansard floor is the fastest and most affordable way to expand your building's area. Here's how it works for different property types:

Apartment Building Owner / Developer

Own a 5-story building with 40 apartments? A mansard means 8–12 more apartments for sale or rent. Construction cost — 50% below market price per m²

+8–12 apartments for sale

Hotel / Hospitality Owner

10 additional rooms in a mansard = +3,000,000 UAH/year revenue. Guests love rooms with mansard windows and city views — premium segment

+3,000,000 UAH/year revenue

Office Building Owner

A mansard floor with panoramic windows — the most valuable office space in the building. Tenants pay premium for non-standard spaces with views

Premium rent +30–50%

Administrative Building

Conference rooms, coworking spaces, server rooms, archives — a mansard solves the space shortage without buying adjacent land or new construction

No new land plot needed

Find out how many m² are hidden above your roof →

Running Out of Space — But Growth Opportunities Exist?

Demand Exceeds Supply

All premises occupied, rooms booked, offices leased — and the queue grows. You're losing profit every day

New Construction — Expensive and Slow

A separate building means land, foundation, utilities from scratch. Slow, expensive, risky

Your Roof Sits Idle

Above your building lies untapped potential. Every month without a mansard means hundreds of thousands in lost revenue

Mansard Floor for Any Building Type

How Much Additional Revenue Will a Mansard Generate?

Example: Hotel Mansard

Mansard area500 m²
Additional rooms10 rooms
Average room rate1,500 UAH/night
Occupancy70%
Additional revenue315,000 UAH/month
Payback: 10–14 months Then — pure profit from additional space

New Building vs LGSF Mansard

Parameter New Building LGSF Mansard
Cost from $800/m² from $250/m²
Timeline 12–24 mo. 2–4 mo.
Land plot Required Not required
Business interruption Yes No
Foundation reinforcement Yes Usually not
Payback 3–5 years 10–18 months

* Calculation is approximate. Precise estimate after site inspection

LGSF Technology — Mansard Floor Without Load on Existing Structures

Light gauge steel framing weighs 3-5 times less than brick or reinforced concrete. An LGSF mansard is the lightest addition option, suitable even for older buildings.

Lightweight

No foundation reinforcement — 30–40% budget savings

Fast Installation

From 2 months — start using the space sooner

Factory Ready

Structures manufactured at the factory — only assembly on site

Energy Efficient

Modern thermal insulation — warm mansard year-round

Fire Safety

Non-combustible materials, compliant with building codes

Durability

Service life 50+ years

LGSF structures for mansard floor addition

Completed Projects

Want the same? We'll calculate mansard cost for your building →

Watch how we build

Mansard Floor Extension with LGSF

Real project — mansard floor addition

More videos on our YouTube channel →

What Our Clients Say

They added a mansard floor to our office building in 3 months. The office didn't stop for a single day. Tenants moved in two weeks after completion. We recouped the investment in less than a year.

O.K.
Oleksiy K.
Office building owner, Dnipro

We deliberated between a new building and a mansard addition. Chose REDIKON — no regrets. Saved 40% of budget, got 800 m² of quality space.

V.M.
Viktor M.
Investor, commercial real estate

Professional team — from building inspection to mansard commissioning. They handled all the permits. I recommend for serious projects.

I.L.
Iryna L.
Hotel manager, Zaporizhzhia
16+years in business
600+completed projects
0days of business interruption
from 2months — mansard installation

One Company — From Estimate to Mansard Commissioning

01

Consultation

Discussing the task, preliminary assessment of addition feasibility

02

Building Survey

Structural audit, assessing mansard addition feasibility

03

Design

Working design, estimate, permit documentation

04

Manufacturing

LGSF structure production at our factory

05

Installation

Staged construction without stopping building operations

06

Commissioning

Handover, documentation, warranty

Find Out If a Mansard Can Be Added to Your Building

Preliminary estimate — within 1 business day
Mansard feasibility assessment — free
Engineer site visit — free

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Frequently Asked Questions

Can the existing building support a mansard floor?

LGSF structures are 3-5 times lighter than traditional materials. A mansard is the lightest type of addition. Before design, we conduct a structural survey and calculate the permissible load.

Do residents need to be relocated or business operations stopped?

No. Installation is carried out from above — in stages, without affecting residents, tenants, or building operations.

How long does a mansard addition take?

From 2 months — depending on the area. Structures are manufactured in parallel with site preparation.

Is foundation reinforcement required?

In most cases — no. A mansard from LGSF places minimal load on existing structures. This is the lightest type of addition.

What permits are needed for a mansard addition?

We handle the full cycle: design, expertise, permits, commissioning. In some cases, mansard additions have a simplified approval process.

What warranty comes with the mansard?

5+ years on structures and installation. LGSF service life — 50+ years.

Can a mansard be added to an older building?

Yes. Thanks to the minimal weight of LGSF, a mansard is suitable even for older buildings. We will conduct a survey and find the optimal solution.

Above your building lie unused square meters. Find out if a mansard is possible — estimate within 24 hours

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