How do we adapt to the American market?
Modern Doors: Features and Innovations That Make a Difference
Key Features:
1. Superior Thermal Insulation
- Ensures excellent energy efficiency with advanced thermal breaks and multi-chamber profiles.
- Contributes to maintaining a comfortable indoor climate while reducing energy consumption for heating and AC.
- U factor with triple glazing is only 0,16 and with double glazing 0,26, what is confirmed by NFRC organization.
2. Sleek, Modern Design
- Combines minimalist aesthetics with robust construction.
- Enhances the visual appeal of buildings with clean lines and contemporary style.
- Opening windows do not have glazing beads (glazing stops).
- Hidden window hinges are in standard.
3. Durability and Strength
- Made from high-quality materials for long-lasting performance.
- Resilient to weather conditions, ensuring reliable functionality over time.
- Doors with maximal height of 11 feet. Tilt and turn window can have over 9 feet height without dividing mullions.
4. Versatile Applications
- Suitable for residential homes and commercial spaces alike.
- Can be customized to fit various architectural needs and designs.
- All required variants of windows and doors – tilt and turn windows, fix windows, combined windows, glass corners, hinged doors, French doors, multi slide doors, pocket doors, lift and slide doors, sliding doors.
- 90 and 135 degree connectors available.
5. User Comfort
- Provides easy operation and low-maintenance performance.
- Designed to improve the quality of life for homeowners and building occupants.
- 3 variants of opening – tilt in, swing it and micro ventilation (night vent), when window looks like closed, but allow fresh air to come in to the room.
6. Friendly for installation
- available with nailing fins or brackets. Installation by screwing thru frame is also possible.
- available with brickmolds
7. Multiple wooden species
- available in pine, spruce, larch, meranti, oak and mahogany. Other species like hemlock or walnut upon request. Finger jointed wood is also available as a way to reduce the price with opaque painting.
8. Color options
- Wood can be painted for opaque colors with hundreds of RAL and NCS colors (over 300 colors). We have also palette of 15 stain colors (with visible wooden grains). Wood can be painted also for metalic colors – then window look more like aluminum, but with 90 degree connection in the corners and wood in the core of the window, what looks more sophisticated when window is opened and provides better thermal insulation.
- Color of wood can be totally custom. Based on samples, which we receive from clients f.e. sample of the floor, we are able to produce the same color for wooden frames.
- Aluminum can be painted for RAL, NCS and tiger colors in mat and shiny variants.
Applications
- Residential Buildings: Perfect for creating energy-efficient, modern homes with a touch of elegance.
- Commercial Projects: Ideal for office spaces, retail environments, and other professional settings where aesthetics meet functionality.
- Customized Solutions: Tailored to suit specific project requirements, ensuring a perfect fit every time.
Synergic – Modern Wood-aluminium System with a Hidden Sash
Synergic Lift and Slide Door – Bertrand – Windows & Doors
The Synergic System seamlessly blends modern design, superior performance, and reliable durability. It’s a versatile solution that enhances energy efficiency and elevates architectural aesthetics. Perfect for both residential and commercial projects, it is the ideal choice for those seeking style, comfort, and functionality in one innovative package.
| Product | Type | SHGC | U-Factor | VT |
| Synergic Alu XL | Awning window | 0,11 – 0,31 | 0,18 – 0,19 | 0,20 – 0,45 |
| Synergic Alu XL | Side hinge door | 0,10 – 0,31 | 0,18 | 0,26 – 0,45 |
SYNERGIC window features:
- U Factor from: 0.16 Btu/hft2F
- system depth: 3 13/64 in, XL 3 39/64 in
- SHGC: 0.15 – 0.25
- Vt: 0.29 – 0.43
- Max glazing unit: 2 9/32 in.
- Soundproofing: to 48 dB
- modern profile shape in line with the current trends in architecture
- hidden sash
- possibility of using the glass pane sets of up to 2 9/32 in (XL)
- numerous colours of wood and aluminium
- high resistance to weather conditions
- two or three glass panes glazing
- three sealing layers

Security
Advanced technology of gluing glazing units, combined with modern fittings, allowed to achieve burglary resistance up to RC2 class.
Natural light
Ultra narrow frames and a large glass surface provide plenty of natural light inside the house. The height of the frame with the sash is only 90 mm.
Energy efficiency
Sensational thermal insulation coefficient – up to U Factor (summer) IP from: 0.1375 Btu/hft2F / Factor (metric) IP from: 0,78 W/m2K
Acoustics
Definitely better acoustics than traditional solutions. The Rw (sound insulation) coefficient reaches a value of up to 48 dB, which is 150% of the standard level.
Beauty
Modern style and minimalist design based on expressive shapes. The aesthetics of wood combined with the fashionable style of aluminum create timeless beauty and the highest durability.
Durability
The window frames are made of 90 mm thick wood. Aluminum cover provides protection against weather conditions. During qualitative research, the system achieved the highest classes of water resistance, air permeability and wind loads.
Comfort
Modern fittings ensure easy opening and closing of windows.
SYNERGIC is a wooden window system with an aluminum cover. It is distinguished by very good thermal insulation parameters, which the Customer can receive at a price similar to a wooden system.
| Glazing | 3-glass glazing unit, 2-chamber |
| RW (soundproof) | up to 48 dB |
| Warranty | 5 years |
| Wood type | pine, oak, meranti, larch, spruce |
| Warm frame | Chromatech, Multitech |
| Inside colors | transparent, RAL or NCS colors |
| Exterior colors | any RAL – structure or mat |
| Bonding | three layers |
| Seals | three sealing layers |
| Fitting | hidden |
| Ornamental decorative glass | available as an option |
| Mullions | optional |
Learn more about Synergic
Bertrand uses the most advanced varnishes for wood.Our AQUATOP varnish, which we use as standard, protects surfaces from the weather and gives them a smooth and long-lasting protection.
AQUATOP is characterized by excellent moisture resistance.It protects surfaces from water, rain and moisture, preventing problems such as rot, mold and damage that occurs over time.It provides reliable resistance all year round, in any climate.
Thanks to advanced and innovative varnishes and a careful manufacturing process that is a hybrid of automated sanding of flat surfaces and manual sanding of hard-to-reach surfaces such as the area inside the frame, our wood windows feature a smooth and flawless finish.
Bertrand wood windows are perfect for hot climates thanks to the use of cold pigmented varnish.

