20 Things You Should Ask About Secondary Glazing Companies Before You Decide To Purchase It

· 5 min read
20 Things You Should Ask About Secondary Glazing Companies Before You Decide To Purchase It

The Ultimate Guide to Choosing Secondary Glazing Companies: Enhancing Comfort and Efficiency

In the realm of home improvement and architectural preservation, secondary glazing has become among the most effective options for enhancing thermal performance and acoustic insulation. Unlike  secondary double glazing near borehamwood , secondary glazing involves the installation of a discrete internal window frame behind the existing primary window. This approach is particularly preferred by residents of noted structures, period properties, and those living in hectic city environments.

Nevertheless, the success of such an installation depends heavily on the knowledge of the secondary glazing companies picked for the task. This guide checks out the advantages of secondary glazing, the requirements for selecting a trustworthy supplier, and the technical aspects that specify a premium setup.

The Role of Secondary Glazing Companies

Secondary glazing business focus on the design, manufacture, and setup of internal window systems that complement existing structures. Their primary objective is to produce an air space in between the primary window and the secondary system, which acts as a barrier against heat loss and sound transmission.

Professional business supply bespoke services customized to the specific dimensions and style of a property's initial windows. This guarantees that the aesthetic stability of the structure stays intact while substantially upgrading its functional performance.

Secret Benefits of Professional Secondary Glazing

Before selecting a service provider, it is vital to comprehend the value proposal provided by top quality secondary glazing. Expert companies usually stress 4 core advantages:

  1. Acoustic Insulation: By producing a specialized air gap (typically 100mm to 200mm), secondary glazing can minimize external sound levels by up to 80% (roughly 50 decibels).
  2. Thermal Efficiency: It removes drafts and lowers heat loss, which can lead to a decrease in energy expenses and a smaller sized carbon footprint.
  3. Preservation of Heritage: Because it is an internal addition, it does not require the removal of initial glass or frames, making it the preferred choice for Grade I and Grade II listed structures.
  4. Improved Security: Adding an additional layer of strengthened glass and a secondary locking system creates a significant deterrent against trespassers.

Table 1: Comparison of Secondary Glazing Materials

While various products are available, the majority of reliable business prioritize aluminum due to its strength and slim profile.

ProductDurabilityProfile ThicknessAesthetic AppealUpkeep
AluminumVery HighExtremely SlimModern/DiscreteLow
TimberHighMedium/ThickStandardHigh (Requires Painting)
Plastic/PVC-UModerateThickFundamentalLow
Magnetized FilmLowUltra-SlimTemporary LookN/A (DIY focused)

Types of Secondary Glazing Systems Offered

Specialist business use a variety of opening designs to ensure the secondary system lines up completely with the main window's function.

1. Horizontal Sliders

Often used for casement windows, these units slide sideways on incorporated rollers. They enable for easy access to the external window for cleaning and ventilation.

2. Vertical Sliders (Sash Style)

Designed particularly for conventional sash windows, these units use a spring-balance system to imitate the movement of the initial window. This makes sure that the sightlines of the secondary glazing align perfectly with the initial lumber frames.

3. Hinged Units

Available as side-hung or top-hung, these systems open inward like a basic door or sash. They are ideal for windows where complete access to the primary glass is needed and are often used for fire escape routes.

4. Lift-Out Units

These are the most cost-efficient and discrete alternatives. The whole pane of glass is raised out of the frame. They prevail in windows that are seldom opened, such as those in decorative or hard-to-reach locations.

How to Evaluate Secondary Glazing Companies

Picking the right business is a vital step in ensuring long-lasting satisfaction. When vetting prospective service providers, the following criteria need to be considered:

Industry Accreditations

Reputable business should be members of acknowledged industry bodies. In the UK, for example, subscription in FENSA (Fenestration Self-Assessment Scheme) or the GGF (Glass and Glazing Federation) symbolizes that the business adheres to strict requirements of safety and quality.

Bespoke Manufacturing

Avoid companies that use "one size fits all" solutions. Because period windows are often slightly out of square, an expert company must carry out a laser-measured study to make sure every system is customized to the millimeter.

Glass Options

The quality of the glass is critical. Leading companies offer numerous glass types, consisting of:

  • Acoustic Laminate Glass: Specialized for sound reduction.
  • Low-E Glass: Coated to reflect heat back into the room.
  • Toughened Safety Glass: Standard for durability and security.

Table 2: Checklist for Selecting a Secondary Glazing Provider

FunctionValueWhat to Look For
Service warrantyVitalAt least a 5 to 10-year guarantee on frames and glass.
SurveyingImportantDoes the business offer a complimentary, no-obligation technical survey?
FinishesVisualAbility to powder-coat frames in any RAL color to match interiors.
ReviewsDependabilityLook for third-party confirmed reviews (Trustpilot, Google).
Installation TeamQualityIn-house installers are usually preferred over sub-contractors.

The Installation Process

An expert secondary glazing setup follows a structured procedure to make sure the very best outcomes:

  1. Initial Consultation: Discussing requirements for noise, heat, or security.
  2. Site Survey: A professional takes precision measurements and examines the condition of the primary window sills.
  3. Custom-made Manufacture: The frames are cut and put together in a factory environment.
  4. Setup: The secondary frames are repaired to the window expose. Top quality companies use specialized boundary seals to guarantee an airtight surface.
  5. Quality Check: Testing the sliding or hinging systems and cleaning up the glass surface areas.

Approximating the Impact: Thermal and Acoustic Data

Secondary glazing supplies measurable enhancements. Companies typically offer information sheets showing the estimated U-value (thermal transmittance) and Db (decibel) decreases.

Table 3: Performance Metrics (Estimates)

Window ConfigurationU-Value (Lower is Better)Noise Reduction (Db)
Single Glazing (Original)5.8N/A
Single + 4mm Secondary Glazing1.8 - 2.035dB - 40dB
Single + 6.4 mm Acoustic Secondary1.7 - 1.945dB - 50dB
Standard Double Glazing1.2 - 1.630dB - 35dB

Keep in mind: Professional secondary glazing frequently exceeds standard double glazing in noise decrease due to the fact that of the larger air gap between panes.

Regularly Asked Questions (FAQ)

1. Is secondary glazing cheaper than double glazing?

Generally, yes. Secondary glazing is typically significantlly more economical than replacing entire window units, specifically when labor costs for structural modifications are factored in.

2. Can secondary glazing assist with condensation?

Yes. When set up properly by a professional business, it supplies a thermal barrier that reduces the "cold bridge" effect on the primary glass. This assists minimize the formation of condensation, supplied there is managed ventilation.

3. Do I need planning approval for secondary glazing?

In many cases, no. Since secondary glazing is an internal adjustment that does not change the external appearance of the building, it hardly ever requires preparing authorization, even in preservation locations. Nevertheless, it is constantly a good idea to talk to local authorities for Grade I noted properties.

4. Will I be able to open my initial windows?

Yes. Professional secondary glazing companies design systems that mirror the opening function of the main window. For instance, a vertical slider enables you to open both the secondary and main sash windows for complete air flow.

5. For how long does the installation take?

For an average-sized house, the installation of secondary glazing can typically be finished in a single day. Larger commercial jobs will require a more extended timeline based upon the number of systems.

Secondary glazing business play an essential role in improving older homes without jeopardizing their historical beauty. By picking a business that uses bespoke aluminum frames, high-performance glass, and certified setup services, residential or commercial property owners can achieve considerable improvements in both convenience and energy performance. While the initial investment is an essential consideration, the long-term cost savings in energy costs and the substantial increase in acoustic comfort make expert secondary glazing a sensible option for any structure.