Rooftop annex
Make room for a new use after assessing the existing roof and access.
NACE · ROOMS & ANNEXES
Sandwich-panel rooms and annexes in Jeddah
Complete annex and extra-room construction, from the steel structure and insulated panels to electrical work, air conditioning and finishes.
What would you like to build?
Start with how you will use the space. Dimensions, openings and services follow.
Extra room
Add a room beside your home with openings and services planned together.
Majlis or retreat
A seating space with glazing, lighting and finishes to suit its use.
Office or guard room
A practical workspace with a suitable entrance, visibility and ventilation.
Service room
An enclosure sized around the required equipment, access and services.
Light storage
A small storage space with the entrance and layout matched to its contents.
For industrial warehouses and cold rooms: View the dedicated service
FROM SITE TO FINISHED SPACE
Real NACE work
Rooms, annexes and facades from our project record, including installation-stage photographs.
NACE project
Rooftop room — Jeddah
Exterior room and annex construction and fit-out. The photograph shows the completed exterior.
After execution
NACE project
Glazed courtyard annex
Glazed facade and annex work, documented in the owner’s project photographs.
Completed exterior
Site photograph
Outdoor room during installation
Glazed openings and room enclosure during site work.
During executionMore details from our work
Why sandwich panels?
Thermal insulation
Helps reduce heat transfer into the room.
Faster execution
Can take less time than many conventional methods, depending on the project scope.
Lighter construction
Suitable for many annex applications after assessing the site and structural requirements.
Design flexibility
Can integrate doors, glazing, lighting, AC and different finishes.
From structure to handover
We coordinate the room’s components as one usable space.
Steel structure
Supports, connections and protection suited to the location.
Wall and roof panels
Insulated panels, joints, closures and roof drainage.
Doors, windows and glazing
Openings planned around access, daylight and room use.
Electrical work and lighting
Power points, wiring and lighting to the agreed layout.
Air conditioning
Capacity, position and service routes planned for the space.
Flooring and finishes
Floor, ceiling and interior finishing to the selected level.
Each project’s scope is defined separately in its quotation, with supply, installation and excluded items clearly identified.
THREE LAYERS WORKING TOGETHER
What is inside a sandwich panel?
An outer steel skin, an insulating core and an inner steel skin form the panel.
- 50 mm
- 75 mm
- 100 mm
The appropriate thickness depends on use, location and insulation requirements.
Illustrative panel cutaway
- Outer steel sheetGalvanised and painted
- Insulating corePolyurethane · PU
- Inner steel sheetGalvanised and painted
An illustrative explanation of the panel layers, not a specific product specification.
View technical specifications
- Insulation core
- The insulation type, thermal performance and fire classification are selected from the manufacturer’s product data for the project. PU is one available core type; the drawing is illustrative.
- Steel skins
- The steel gauge, galvanizing and coating are stated in the approved product specification for the exposure conditions.
- Panel thickness
- 50, 75 and 100 mm are options to assess. A thickness is not automatically assigned to a room type.
- Joints and installation
- Joint profiles, fasteners, seals, closures and roof drainage are coordinated with the structure and product instructions.
Insulated sandwich-panel room installation specifications
Sandwich-panel room specifications depend on use and location: a designed supporting structure, suitable thermal insulation and fire classification, and a panel thickness approved for the design. Installation includes compatible fixings and joints, sealed openings and roof drainage. Loads, ventilation, electrical work and permit requirements are reviewed before materials, execution and handover are agreed.
Why does the price vary from one room to another?
Area is a starting point. The specification, services and site conditions define the actual work.
Length, width and height
Define the areas and material quantities.
Panel type and thickness
Depend on insulation needs and product specifications.
Steel structure
Varies with spans, supports and site conditions.
Doors, windows and glazing
Number, dimensions and selected systems.
Electrical work and AC
Capacity, service points and connection routes.
Finishing level
Flooring, ceilings, lighting and interior details.
Sandwich-panel room area calculatorAn optional tool for approximate areas
For a rectangular room with a flat roof. Walls = perimeter × height − openings. Panel total = walls + roof, excluding the floor and waste. Roof slopes and installation details are resolved in final measurements.
Enter the dimensions to see floor, roof, wall and panel areas.
- Floor area
- Flat roof area
- Approximate walls
- Approximate panel total
Four steps to handover
Understand the brief
Intended use and initial dimensions.
Survey and measurements
Review the site, services and execution requirements.
Specification and quotation
Define the steel structure, panels and scope.
Execution and handover
Supply, installation, closures, finishing and handover.
From our construction sites
Real footage from room and annex construction.
Rooftop room construction
Site footage of the structure, panels and interior preparation.
Room construction and finishes
Execution footage and room facades from the NACE project record.
BEFORE YOU START
Questions to help you decide
How much does a sandwich-panel room cost?
A quotation depends on dimensions, panel and steel specifications, openings, services and finishes. Send the intended use, dimensions and site photographs for a more useful estimate.
Which thickness suits a room in Jeddah?
The choice between 50, 75 and 100 mm depends on use, sun exposure, AC needs and the selected panel’s thermal performance. Joint sealing and installation quality also affect the result.
Can a room be installed on an existing roof?
Suitability depends on the existing structure, support points, access and required services. These are reviewed before the room specification is finalized.
Does the work include electricity, AC, doors and glazing?
These items can be coordinated within an integrated scope. The quotation identifies the included supply, installation and finishing works and any exclusions.
How are rainwater and joints handled?
Roof slopes, drainage, closures and joint sealing are planned for the site and panel system. They require correct installation and checks; panel selection alone does not guarantee a leak-free roof.
How long does installation take?
The schedule is set after reviewing quantities, site readiness, access, material availability and finishes. Procurement and approvals are distinguished from on-site work.
What information is needed for a quote?
Share the location, intended use, approximate length, width and height, photographs, and required doors, windows, electrical work and AC. A site survey confirms the final scope.
START WITH YOUR SPACE
Your next room starts with dimensions and photos
Share the location, intended use and initial dimensions. We will review the scope and the next step towards a quote.