Glass sliding doors with bronze frames, joinery by SN Group
All ServicesExterior carpentry that performs

Higher insulation, more security, a more beautiful facade. Carpentry that makes the difference in comfort and energy efficiency.

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Glass Evolution

The glazing determines how well your home insulates against heat loss and noise. Four generations of glass, four levels of comfort.

U=1.1
Glass Evolution & EPC
Profile Choice

Each material has its strengths. The right choice depends on your budget, facade style and maintenance preferences. Compare them on five criteria.

InsulationMaintenanceLifespanDesignPrice

The most popular choice in Flanders. Good value for money, minimal maintenance, available in wood-look and RAL colors.

Ideaal voorStandard renovation, limited budget
TipChoose at least a 5-chamber profile for optimal insulation.
Renovatie & Profile Choice
Burglary Protection

Windows and doors are the first target during a break-in. With the right hardware and glass, you delay a burglar until they give up.

Basic

< 1 min

Standard hardware, regular glass

No resistance against forced entry. Many existing homes are at this level.

RC1

1 min

Locked hardware, regular glass

Offers resistance against opportunistic break-in attempts (pushing, pulling).

RC2

3 min

Multi-point locking, safety glass P4A

The recommendation of Belgian police. Resistance against screwdriver, pliers and wedges.

RC3

5+ min

Reinforced hardware, laminated glass P6B

For increased risk. Resistance against crowbar and heavier tools.

Sound Insulation

With the right glass and profile, you significantly reduce outside noise. Ideal if you live on a busy road, near a railway or in the city.

BronBuitenEnkelHR++Triple
Busy road
75 dB
50 dB
35 dB
28 dB
Railway
85 dB
60 dB
45 dB
38 dB
Airport
95 dB
70 dB
55 dB
48 dB
Quiet street
55 dB
35 dB
22 dB
18 dB

Acoustic glass (laminated) offers even better sound damping than standard triple glazing.

Energy Savings & Premiums

New windows and doors are one of the fastest ways to improve your EPC label and lower your heating costs.

0%25%50%75%100%
Single glazing → HR++ glass€400 to €800/year
EPCLabel F → D
Old double glazing → HR++ glass€200 to €400/year
EPCLabel E → C
HR++ glass → Triple glazing€100 to €200/year
EPCLabel C → B
Single glazing → Triple glazing€600 to €1,000/year
EPCLabel F → B

Through Mijn Verbouwpremie (Flanders) you can receive up to €3,200 in premiums for new windows with a U-value ≤ 1.0 W/m²K. Note: invoice in homeowner's name and certified contractor required.

For renovation of homes older than 10 years, 6% VAT applies instead of 21%. That easily saves several thousand euros.

Our Brands

We work exclusively with renowned manufacturers and are certified installers.

ReynaersAluminium systems

Belgian top brand. Slim profiles, superior insulation, unlimited RAL colors.

DeceuninckPVC profiles

Innovative PVC focused on sustainability and recycling. Wide choice of finishes.

VeluxRoof windows

The standard in roof windows. Optimal light entry, ventilation and energy performance.

SkyluxLight domes

Belgian manufacturer of skylights and domes. Sustainable daylight solutions.

ReynaersAluminium systems

Belgian top brand. Slim profiles, superior insulation, unlimited RAL colors.

DeceuninckPVC profiles

Innovative PVC focused on sustainability and recycling. Wide choice of finishes.

VeluxRoof windows

The standard in roof windows. Optimal light entry, ventilation and energy performance.

SkyluxLight domes

Belgian manufacturer of skylights and domes. Sustainable daylight solutions.

ReynaersAluminium systems

Belgian top brand. Slim profiles, superior insulation, unlimited RAL colors.

DeceuninckPVC profiles

Innovative PVC focused on sustainability and recycling. Wide choice of finishes.

VeluxRoof windows

The standard in roof windows. Optimal light entry, ventilation and energy performance.

SkyluxLight domes

Belgian manufacturer of skylights and domes. Sustainable daylight solutions.

ReynaersAluminium systems

Belgian top brand. Slim profiles, superior insulation, unlimited RAL colors.

DeceuninckPVC profiles

Innovative PVC focused on sustainability and recycling. Wide choice of finishes.

VeluxRoof windows

The standard in roof windows. Optimal light entry, ventilation and energy performance.

SkyluxLight domes

Belgian manufacturer of skylights and domes. Sustainable daylight solutions.

Our Process

A clear process in five steps, so you know exactly what to expect.

1

Site visit and advice

Day 1

Free measurement at your home. We discuss your wishes, assess the existing situation and advise on materials and glazing.

2

Customized quote

Within 1 week

A detailed quote per window and door, including finishing, transport and installation. No surprises afterwards.

3

Production

4 to 8 weeks

Your carpentry is custom-produced at the manufacturer. Quality control at every step.

4

Installation

1 to 3 days

Airtight, thermal-bridge-free installation by our own team. Interior and exterior finishing included.

5

Delivery and aftercare

Day of completion

Inspection of all windows and doors, instructions on operation and maintenance. You receive a warranty certificate.

Frequently Asked Questions

Request a free site visit and receive a customized quote. No obligations, with clear advice.