Glossary Filter


16mm in the thickness of our Double Glass and Fivewall Polycarbonate. 16mm is equal to just under 5/8″


6mm is the thickness of upgraded Single Glass and our Twinwall Polycarbonate. 6mm is equal to just under a quarter of an inch

ADA Hardware

ADA-compliant locks, exit devices, handles, pulls, latches, and other operable parts on doors shall comply.

Annealed Glass

Sometimes called “Float Glass”, this is a softer glass option than tempered glass. This type of glass is thermally treated and then slowly cooled to relieve any stresses. Typically, this type of glass breaks more easily and into jagged shards that can cause injury. BC Greenhouse Builders does not use this type of glass on […]


Glazing Guide

Base Panels

A decorative feature is available on our Cross Country Greenhouse line.


Raised platforms or tables used for holding plants or other greenhouse materials.


Custom-made or tailored to specific requirements, often used in the context of greenhouse design or features.

Bird Cage

A structure designed to mimic the look of a birdcage and is often gable attached to an existing structure.


Where a greenhouse is designed to occupy a passage or space between two existing structures allowing for airflow and access.


Bronze tint is a common option for our glass greenhouses. Bronze is also a term used interchangeably for our Rideau brown-framed greenhouses. Also an available feature in 6mm Polycarbonate.


A unit of measurement for thermal energy. In greenhouses, it’s used to measure heating or cooling capacity.

Building Attached Greenhouse

A greenhouse structure that is directly attached to a building, often utilizing the building’s heating or cooling systems.

Calculation Package

Information Package provides an engineer who details the loads and capacities of a greenhouse or structure.

Cape Cod

Cross Country style of greenhouse design with a symmetrical appearance, featuring a 12/12 steeply pitched roof reminiscent of traditional New England architecture.


A sealant fills gaps or joints in greenhouse structures to prevent air or water leakage.

Cedar Bench

A bench made from cedar wood, commonly used in greenhouses for its natural resistance to decay and insects.

Ceiling Fan Brackets

Mounting brackets used to install ceiling fans in greenhouses for air circulation and temperature regulation.

CFM (Cubic Feet per Minute)

Airflow volume is often measured to specify a greenhouse fan or ventilation system capacity.

Circulating Fan

A fan used to circulate air within the greenhouse, promoting uniform temperatures and reducing humidity variations.

Commercial Greenhouses

Greenhouse structures are designed and used for the commercial production of plants or crops on a large scale. Also can be connected to greenhouses for commercial applications like schools, nurseries, longterm care facilities and more.


A greenhouse structure constructed using concrete as the primary foundation material for durability and stability.


The process by which water vapour in the air condenses into liquid water is often seen on greenhouse surfaces when warm, moist air comes into contact with cooler surfaces.


A greenhouse or glass-enclosed structure is used for growing plants and providing a space for relaxation or enjoyment of the surrounding environment.


The recipient or receiver of goods or materials shipped to a greenhouse facility.

Continuous Ridge Vents

Ventilation openings or systems are installed along the ridge of the greenhouse roof to allow hot air to escape and promote airflow. These systems typically run almost the entire length of the greenhouse.

Continuous Side Vents

Ventilation openings or systems are installed along the sides of the greenhouse to allow fresh air to enter and hot air to escape. Typically running almost the entire length of the greenhouse.

Cool House

A greenhouse compartment or section with cooling systems to maintain lower temperatures is often used to grow heat-sensitive plants.


Cross Country style of greenhouse design with a symmetrical appearance, featuring a 8.5/12 pitched roof that matches the look of many contemporary homes.

Crate Shipping

A method of shipping goods or materials using crates for protection during transport.


The process of packing goods or materials into crates for shipping or storage.

Cross Country Brand

Best selection of greenhouse models with over 4000 models to choose from manufactured by BC Greenhouse Builders Ltd.


A small dome-like structure is mounted on a greenhouse’s roof for ventilation or aesthetic purposes.

Curb Appeal

A greenhouse facility’s attractiveness or aesthetic appeal from the outside is often considered important for attracting customers or visitors.

Curb Wall

A low wall or barrier along the perimeter of the greenhouse structure is often used to raise the entire structure to a desired height.

Decorative Gutter

A gutter system is installed on a greenhouse for both functional and aesthetic purposes, often designed with decorative elements.

Decorative Pressure Cap

Crafted for a wider profile aluminum beauty cover, this cap gives the look of a more substantial glazing bar without the added cost. Say goodbye to exposed screws and hardware and hello to a clean finish that’s sure to impress.

Diagonal Brace

Structural reinforcement used to provide stability and support to greenhouse frames, typically installed at an angle to distribute forces evenly.

Door Drop

A door drop is a custom modification that lowers the greenhouse door into the foundation (or allows the door to be flush with the ground).

Door Threshold

The bottom part of a Commercial Storefront door frame, where the door meets the floor, is often reinforced for durability and weather resistance.

Double Bay Roof Vents

Vents spanning sections or bays on the roof of a greenhouse are used to regulate temperature and airflow.

Double Glass

A glazing system featuring two layers of glass separated by airspace to improve energy efficiency and insulation in the greenhouse.


Glazing Guide


The system or process of removing excess water from the greenhouse.


The lower edge of the roof that overhangs the walls of a greenhouse provides protection from rain and directs water away from the structure.

Engineered Drawing

A technical drawing that has been analyzed by a certified engineer to ensure the structure meets local building codes.


Applying scientific principles and mathematical techniques to design, construct, and optimize greenhouse structures, systems, and equipment.

Exhaust Fan

A fan installed in the greenhouse to remove stale air, excess humidity, and heat, promoting air circulation and maintaining optimal growing conditions.

Extension Kit

An existing greenhouse structure can be expanded or modified by adding additional components or parts to increase its size, capacity, or functionality.


A bolt with a looped head is used for attaching ropes, cables, or other hardware in the greenhouse to hang plants, equipment, or other items.


The front or exterior facing of a greenhouse structure is often designed to be visually appealing and enhance the greenhouse’s overall aesthetic.


Ornamental decorative elements are often placed at the apex or ends of the greenhouse ridge for aesthetic purposes.

Fivewall Polycarbonate

A type of polycarbonate panel with five layers, providing enhanced insulation, durability, and light diffusion properties for greenhouse glazing.


Glazing Guide


Thin metal strips or other material are used to waterproof joints and transitions in greenhouse construction, preventing water penetration and leaks.

Float Glass

A type of flat glass produced by floating molten glass on a bed of molten metal, commonly used in greenhouse glazing due to its clarity and uniform thickness. Typically, this type of glass breaks more easily and into jagged shards that can cause injury. BC Greenhouse Builders does not use this type of glass on […]


Glazing Guide

FOB (Freight on Board)

A shipping term indicating that the seller is responsible for the cost and risk of transporting goods to a specified destination, typically including loading the goods onto a transportation vessel.


A powered industrial truck equipped with lifting forks used for lifting, transporting, and stacking materials and equipment in the greenhouse.


The base or support structure upon which a greenhouse is built provides stability, load distribution, and anchorage to the ground.

Freestanding Greenhouse

A greenhouse structure that stands independently and is not attached to any other building or structure.

Freestanding Lean-to

A lean-to greenhouse structure that is freestanding and not attached to another building, typically featuring a single sloped roof.


The gable at the end of a ridge-roofed structure usually has straight sides, follows the roof’s slope, and is often bound by the roof’s eaves.

Gable Attached Greenhouse

Typically, a freestanding greenhouse has had one or more gable walls removed to attach directly to an existing building or structure.

Gable End

The vertical triangular end of a building, where the roof slopes downward from a ridge.


A system that utilizes the earth’s constant temperature to regulate the temperature inside a greenhouse, typically by circulating air through underground tubes.


Utilizing the natural heat energy stored in the earth to regulate temperature is often employed in greenhouse heating or cooling systems.


A transparent or translucent material typically used for glazing in greenhouse construction, allowing sunlight to enter while providing insulation.


Glazing Guide


The process of installing glass or other transparent materials, such as glass or polycarbonate, in greenhouse structures to allow sunlight penetration while providing insulation.


Glazing Guide

Grand Meridian

The Grand Meridian deep 6″ tubular frame is the widest frame available by BC Greenhouse Builders Ltd. It allows our design team to meet the aesthetic vision as well as structural loads.

Greenhouse Expert

A professional with specialized knowledge and experience in greenhouse design, construction, operation, and management.

Greenhouse Flooring

The surface material covering the floor of a greenhouse.

Greenhouse Heating

Providing heat to maintain optimal temperatures inside a greenhouse, essential for plant growth, is often achieved using heating systems such as electric, natural gas or propane heaters.


H-Gutter is a small, simplistic rain gutter suitable for small or curved eve greenhouses.

HAF (Horizontal Air Flow)

A ventilation system in a greenhouse that circulates air horizontally, distributing heat, moisture, and nutrients evenly throughout the growing area to promote healthy plant growth.

Hammer On Cap

A type of greenhouse glazing system where the glazing material is secured in place by hammering on a cap or retaining strip over the edges, providing a tight seal against weather elements.


Devices used to generate heat within a greenhouse, such as gas heaters or electric heaters, to maintain optimal growing conditions, especially during colder seasons.


The vertical measurement from the ground to the highest point of a greenhouse structure which influences factors such as airflow, light distribution, and the types of plants that can be grown.

Hipped Roof

A type of roof where all sides slope downwards to the walls, usually with a gentle slope, providing stability and drainage in greenhouse construction.

Horizontal Brace

A structural component reinforces and stabilizes the greenhouse framework horizontally, preventing swaying or distortion under environmental loads such as wind or snow.

Hot House

Another term for a greenhouse is typically used to describe a structure designed for cultivating plants by maintaining higher temperatures than the surrounding environment.


For extra protection from wind, choose our Hydraulicheck AVO. This opener replaces the center spring with a hydraulic cylinder, slowing down the movement of the vent opener and preventing it from being damaged by heavy winds.


The material used to fill the spaces between structural areas between a greenhouse and an existing wall is a piece of glazing (often glass, polycarbonate, or other transparent or translucent materials) to allow light to pass through.


The process of assembling and setting up a greenhouse structure, including placing structural components, glazing, and any necessary equipment or systems.


Materials or techniques used to reduce heat loss or gain within a greenhouse, helping to maintain consistent temperatures and energy efficiency, often achieved through double glazing, thermal curtains, or insulation panels.

Inverted Hipped Roof

A roof design where the sloping sides converge to a central point, with the highest point of the roof located at the eaves rather than the ridge, provides a distinctive architectural profile.


A slight offset or deviation in the alignment of structural components or features within a greenhouse, typically occurring at corners or intersections.

Knee Wall

A short wall, typically less than waist height, is positioned around a greenhouse’s perimeter.

Laminated Glass

Two pieces of glass with a polymer interlayer between them. Often referred to as Safety Glass, Laminated Glass can be adapted to suit many architectural projects, particularly those that require demanding performance in terms of increased safety, security (impact-resistant glass), UV protection, noise reduction or a combination of these.


A structure or feature often found in greenhouse roofs consists of a raised, glazed section designed to admit additional light and ventilation into the greenhouse.

Lean-To Greenhouse

A lean-to greenhouse is a practical and efficient choice for gardeners who want to extend their growing season, protect plants from the elements, and enjoy the convenience of easy access to their green space. A greenhouse structure that is attached to another building, typically featuring a single sloped roof.


The horizontal measurement of a greenhouse structure from one end to the other influences factors such as available growing space, layout options, and overall footprint.

Light Transmission

The percentage of sunlight or other light sources that can pass through greenhouse glazing materials influences plant growth, energy efficiency, and overall greenhouse performance.


Artificial illumination is used in greenhouses to supplement natural sunlight, often employed during periods of low light or for specific plant growth requirements.

Limited Edition Models

Specialized greenhouse designs or configurations are produced in stock quantities, often featuring standard features, materials, or finishes and often at reduced prices.


Value Models


The physical placement or site of a greenhouse structure, considering factors such as sunlight exposure, climate conditions, accessibility, and zoning regulations.


A type of adjustable vent or opening in a greenhouse, typically installed in the sidewalls, is used to regulate temperature, humidity, and airflow.

Low-E Glass

Low-emissivity glass with a special coating reduces heat transfer and improves energy efficiency by reflecting infrared heat radiation. It is commonly used in greenhouse glazing to reflect sunlight or control heat gain.


Glazing Guide

LTL (Less Than Truckload)

A shipping term refers to freight shipments that do not require an entire truck trailer. These are often used for transporting smaller quantities of greenhouse materials or supplies.

Manual Cork Screw

A tool is used to manually open or close a greenhouse’s ventilation panels or windows.


This line of luxury greenhouses called Meridian Estate Greenhouses. They are garden rooms and conservatories that are completely customizable and designed to withstand the strongest weather conditions and provide the most enjoyable climate-controlled structure.

Meridian Luxury

The Meridian Luxury line has a 3″ or 5″ tubular framing bar that opens the door to endless design options with excellent glass and high-style spans.

Meridian Superior

The Meridian Superior frame is a popular choice with homeowners who wish to match the design of their home and create a beautiful living and growing space. This frame offers a more substantial, high-end appearance without the look of exposed exterior fasteners. The Superior frame is a significant upgrade from our hobby greenhouse frame with […]

Milton Morris Hardware

See “Westcoast Hardware”

Mixed Glazing

A greenhouse construction technique involves using different glazing materials, such as glass and polycarbonate, to optimize factors like insulation, light transmission, and cost-effectiveness.

MK7 Triple Springs

A temperature triggered wax closer mechanism designed to provide reliable and adjustable closing force is commonly used for Roof &/or Side Vents.

Motorized Vents

Ventilation openings in a greenhouse that are operated automatically via a motorized mechanism allow for precise airflow and temperature control.


A type of glazing material used in greenhouses, typically referring to translucent or opaque panels that diffuse light, providing optimal growing conditions for specific plants.

Orchid Wax

A specific type of greenhouse temperature triggered wax closer mechanism designed to provide reliable and adjustable closing force is commonly used for Roof & Side Vents. Similar to the MK7 opener, but operates at higher temperatures and is ideal for Orchid growing.

Pacific Series

Cross Country style of greenhouse design with a curved roof , featuring a 5/12 pitch. Classic design aesthetic with limited glazing options due to the curve.


Refers to coatings applied to greenhouse structures for protection against corrosion, weathering, and aesthetic enhancement, typically formulated for use in outdoor environments. BC Greenhouse Builders uses wet baked enamel paint for lengevity and customer satisfaction.

Panic Bar

A safety device is installed on greenhouse doors, allowing for quick and easy egress in case of emergency by simply pushing the bar.

Partition Wall

A dividing wall or barrier within a greenhouse structure separates different growing areas, creates distinct environments, or improves organization and efficiency.

Penetration Panel

A specially designed panel in the greenhouse structure allows utilities such as electrical wiring, plumbing, or ventilation ducts to pass.


Relevant authorities require legal permissions or approvals before constructing or operating a greenhouse, ensuring compliance with building codes, zoning regulations, and environmental standards.

Pit Greenhouse

A type of greenhouse partially sunken into the ground, offering natural insulation and thermal stability, particularly advantageous in cold climates. Sometimes referred to as a Walipini.


The angle or slope of the greenhouse roof affects factors like drainage, snow load capacity, and sunlight exposure.


A durable and lightweight thermoplastic material commonly used for greenhouse glazing, valued for its high impact resistance, thermal insulation properties, and UV protection.


Glazing Guide


A type of plastic material used for greenhouse film or covers, known for its flexibility, affordability, and ability to diffuse light.

Pony Wall

A short wall or barrier built around the perimeter of a greenhouse, typically constructed from brick, concrete, or wood, provides additional support and insulation.


A covered entrance or porch area is attached to the front of a greenhouse, serving as a transition space between the exterior and interior environments.

Potting Shed

A small addition or area is added to the exterior of a greenhouse dedicated to potting, transplanting, and other gardening tasks.

Pressure Caps

Components are installed at the ends of greenhouse glazing panels to secure them in place and maintain proper sealing under varying weather conditions.


Horizontal structural members in a greenhouse roof to add support and stabilize the overall structure.


A measure of thermal resistance is used to assess the effectiveness of insulation materials in preventing heat transfer, with higher R-values indicating greater insulation efficiency.

Rack And Pinion

A mechanism used in greenhouse ventilation systems to open and close windows or vents, consisting of a gear (rack) that engages with a toothed rod (pinion) to facilitate movement.

Radiant Heating

A method of greenhouse heating that utilizes radiant energy, often from hot water pipes or electric heating elements installed on the floor or overhead, to warm the plants and surrounding air.

Raised Wall

The greenhouse structure is elevated above ground level on a wall that provides additional insulation, protection, or structural support.

Relative Heat Gain

The amount of heat accumulated within a greenhouse relative to the external environment is influenced by factors such as sunlight exposure, insulation, ventilation, and heating systems.


The peak or highest point of the greenhouse roof is where two sloping roof sections meet, forming a horizontal line along the center of the structure.

Ridge Cresting

Decorative elements or architectural features are installed along the ridge of a greenhouse roof, often for aesthetic purposes.

Ridge Height

The vertical distance from the ground to the ridge of the greenhouse roof determines the structure’s overall height and interior volume.


The overhead covering of the greenhouse structure is designed to protect plants from external elements and regulate internal climate conditions.

Roof Overhang

The horizontal extension of the greenhouse roof beyond the sidewalls or perimeter provides additional protection from rain, snow, and excessive sunlight.


A mechanical device used in greenhouse ventilation systems to control the opening and closing of vents or windows, typically operated by a hand crank or motor.

Safety Glass

Glazing material treated or constructed to minimize the risk of injury upon breakage is typically designed to shatter into tiny, dull fragments rather than sharp shards.

Sales Co-Ordinator

A professional responsible for coordinating sales activities, managing customer inquiries, processing orders, and supporting sales teams in greenhouse-related businesses.


A material applied to joints, seams, or gaps in greenhouse structures to prevent air and moisture infiltration and ensure proper insulation and weatherproofing.

Shade Cloth

A woven fabric or mesh material provides shade and regulates light intensity within a greenhouse, protecting plants from excessive sunlight and heat.

Shed Greenhouse

See “Freestanding Lean-to”


The process of transporting greenhouse materials, equipment, or products from one location to another involves packaging, logistics, and delivery arrangements.

Side Vents

Adjustable openings or vents are located along the sides of the greenhouse structure and regulate airflow, temperature, and humidity levels.


The vertical walls of the greenhouse structure support the roof and enclose the interior growing space.


A type of sealant commonly used in greenhouse construction and glazing installations, known for its durability, flexibility, and weather resistance.

Single Glass

Glazing material consisting of a single pane of glass used in greenhouse construction, providing transparency and insulation properties.


Glazing Guide


The angle or inclination of the greenhouse roof or terrain affects factors such as drainage, snow accumulation, and sunlight exposure.

Snow Load

The weight of snow accumulated on the greenhouse roof or structure must be accounted for in design and construction to prevent structural damage or collapse.

Solarium Bar

A structural component or support beam is used in greenhouse construction to provide stability and reinforcement, particularly in larger or more complex designs.

Stem Wall

A short wall or foundation element built around the greenhouse structure’s perimeter supports and stabilizes the walls and roof.

Storefront Door

A type of door commonly used in greenhouse entrances, characterized by its large glass panels and typically hinged or sliding design. Thermally improved.

Storm Door

A standard primary greenhouse entrance to protect from harsh weather conditions like wind, rain, and snow with an adjustable screened opening for additional ventilation.

Sunlight Exposure

The amount and intensity of sunlight received by plants within the greenhouse are influenced by factors such as orientation, glazing materials, shading, and seasonal variations.

Super Openers

High-capacity ventilation actuators or mechanisms, often powered by solar energy, automatically open and close greenhouse vents or windows.

Support Braces

Structural elements are used to reinforce and support greenhouse components, such as walls, roofs, or frameworks.

T Astragal

A weather-stripping or seal creates a tight closure between two overlapping doors or panels in a greenhouse.

Technical Support

Experts or professionals assist in resolving technical issues, offering guidance, or providing solutions related to greenhouse construction, operation, or maintenance.

Tempered Glass

See Safety Glass Two pieces of glass with a polymer interlayer between them. Often referred to as Safety Glass, Laminated Glass can be adapted to suit many architectural projects, particularly those that require demanding performance in terms of incr.

The Legacy

The Legacy Greenhouse is the ultimate value-priced 8×8 hobby greenhouse that boasts both beauty and functionality by BC Greenhouse Builders. With glass sidewalls and a polycarbonate roof.

The Parkside

The Parkside 8×10 grenehouse by BC Greenhouse Builders incorporates decorative elements such as base panels, ridge and finials for a distinct high-style look.

The Sunhaven

The Sunhaven by BC Greenhouse Builders is a 8×8 limited edition model designed with twinwall polycarbonate for durability and energy efficiency.


A device used to measure and display the temperature inside the greenhouse.


A device used to regulate and control the temperature inside the greenhouse by activating heating or cooling systems as needed.


A coloured or shaded coating is applied to greenhouse glazing to reduce solar heat gain, control light transmission, or provide privacy.

Tinted Glass

Glass that has been treated or coated to reduce glare, UV radiation, or heat transmission while maintaining visibility is used in greenhouse construction for energy efficiency and plant protection.


Traditional Greenhouse Series manufactured by BC Greenhouse Builders is the longest offered greenhouse design since the 1950’s with a 5/12 pitched roof.


A horizontal decorative element applied to greenhouse wall glazing offering a more traditional european appearance.

Trim Board

A decorative or protective board finishes the edges or corners of greenhouse structures, doors, or windows.


A structural framework consisting of interconnected beams or bars is used to support a greenhouse’s roof or ceiling and distribute its weight.

Tube Gutter

A hollow channel installed along the edges or eaves of a greenhouse roof to collect and channel rainwater or condensation away from the structure.


This refers to greenhouse structures, components, or frames that are tubular, made of metal for durability and strength.

Twinwall Polycarbonate

A type of greenhouse glazing material composed of two layers of polycarbonate with a series of air pockets between them, providing insulation, strength, and light diffusion.

Value Models

A collection of greenhouse models from BC Greenhouse Builders in 8×10, 8×12 or 12×16 that offer extra savings.


Value Models


An enclosed area or transitional space between the exterior and interior of a greenhouse is often used as an entryway or buffer zone to control temperature and humidity levels.

Wagon Wheels

A decorative wheel to affix to the gable end of a greenhouse.


An underground greenhouse design characterized by its partially submerged structure, which utilizes the thermal mass of the earth to regulate temperature and extend the growing season.

Warm House

A greenhouse designed or equipped with heating systems to maintain warmer temperatures suitable for tropical or heat-loving plants, especially in colder climates.


A written guarantee provided by the manufacturer or seller of greenhouse products or components, outlining terms and conditions for repair, replacement, or reimbursement in case of defects or failures.


A flexible material, such as rubber or foam, seals gaps or joints in greenhouse doors, windows, or panels to prevent air leaks, moisture intrusion, or heat loss.

West Coast Hardware

A cleanly designed door handle with a single piece of metal as opposed to a typical “D” pull door handle.

Wet Baked

A method of treating materials with heat and moisture to improve durability, resistance to decay, and dimensional stability for outdoor applications, including greenhouse construction.

Wet Stamps

Official seals or certifications issued by structural engineers or regulatory authorities indicate compliance with greenhouse structures’ building codes, standards, or safety requirements.


A greenhouse structure’s horizontal measurement or dimension typically refers to the distance between two opposite sides or walls.

Wind Break Wall

A solid or perforated barrier is built around a greenhouse’s perimeter to reduce wind exposure and minimize wind-related damage to plants, structures, or equipment.

Wind Load

The force exerted by the wind on the surface of a greenhouse structure or its components must be considered in design and construction to ensure structural integrity and stability.

Wire Top Bench

A bench or shelf with a wire mesh or grid top surface is often used for holding pots, trays, or containers of plants within a greenhouse for efficient use of space and airflow.

Wood Frame

A greenhouse structure constructed primarily of wood components, such as posts, beams, and rafters, provides strength, durability, and a natural aesthetic.

Z Bar

A metal flashing or trim type pre-attached to a storm door that is used to secure the door to the frame of the greenhouse.

Over 72 Years of Manufacturing the Strongest Greenhouses