In the face of the ever-growing push for environmental responsibility, choosing sustainable materials has become imperative for conscientious companies.
Hallmark Glazed Extensions, as a company committed to playing its part, exclusively utilises sustainable oak in the construction of every oak conservatory, oak orangery, and oak garden room.
In this blog, we discuss the various sustainable oak frame options and how they are used in our conservatories and orangeries.

The Sustainability of Oak Wood
Why oak wood? Oak, a hardwood tree species, serves as the primary source for constructing all oak framed extensions at Hallmark Glazed Extensions. Sustainably grown on large scales, oak trees are specifically cultivated for harvesting and construction purposes. When subjected to responsible forestry management, oak emerges as an eco-friendly building material.
In comparison to plastics and metals, the use of oak presents a clear advantage in terms of eco-friendliness. Wood construction involves no industrial processes, generates no harmful waste, and produces no noxious fumes, making it a more environmentally conscious choice.

Sourcing Sustainable Oak Wood
All oak used by Hallmark Glazed Extensions is sourced from Poland's abundant oak forests, chosen for their conducive climate. The trees in these forests grow tall and straight, providing the ideal raw material for the long rafters required in the construction of oak-framed orangeries and conservatories.

FSC Certification:
Hallmark Glazed Extensions exclusively uses oak from well-managed European woodlands. This stands in contrast to other hardwood types employed by conservatory companies that source from South America, Africa, or Asia.
Given the questioned reliability of FSC Forestry Management Certification in the southern hemisphere, the company's commitment to European woodlands ensures authenticity and sustainability.
Sustainability of Glass:
Glass, a highly sustainable material, is easily recyclable and can be reused in various structures. Additionally, glass is primarily made from sand, an abundant resource.
Glass selection at Hallmark Glazed Extensions:
For roofing, the company recommends Ambi-Sunshade Blue, a blue-tinted, tough, self-cleaning solar control glass capable of reflecting 82% of heat on hot days. This glass also maintains heat on cold days with a 1.0 KW/sq.m u-value, contributing to energy efficiency.
For frames, Ambi-Clear solar control glass is recommended. Clear, self-cleaning, and capable of reflecting over 50% of heat on hot days, it boasts a 20% greater efficiency than most frame glass. With a 1.0 KW/sq.m u-value, it helps in conserving heat on cold days.
Hallmark Glazed Extensions also emphasises glass recycling, ensuring that glass from previous projects is either relocated or repurposed for future use.
Advantages of Sustainable Materials in Extensions
Cost Efficiency:
Sustainable construction reduces costs by diminishing the need for resources such as water and energy. This not only benefits the environment but can also significantly increase the property value.
Waste Reduction:
The construction industry contributes significantly to Europe's total waste. Using sustainable and recycled materials significantly reduces waste, minimising environmental impact.
Improved Health:
Sustainable building materials contribute to cleaner and safer indoor air quality. According to the Environmental Protection Agency (EPA), outdoor air is 2-5 times less polluted than indoor air.
Environmental Impact:
By utilising sustainable materials, Hallmark Glazed Extensions actively contributes to reducing harm to the environment, particularly in terms of deforestation. The incorporation of solar-controlled glass further enhances energy efficiency, making extensions less harmful to the environment.
For a comprehensive look at the benefits of sustainable construction, refer to Construction Executive's article on the topic.
Hallmark Glazed Extensions:
Commitment to the Environment
Hallmark Glazed Extensions showcases the potential to build beautiful and functional spaces while prioritising environmental responsibility. Our commitment to sustainable oak and glass materials not only aligns with eco-friendly practices but also contributes to the long-term well-being of the planet.
Schedule a free design consultation with our expert team, who are ready to offer recommendations tailored to complement your property.
Call us today at 01323 671007 or fill out our form for a callback.



