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Large Grey Aluminium Greenhouse 523 - Double Door
- Silver finish
- Aluminium base plinth (makes installation easier)
- Strong aluminium frame with 10 year guarantee
- Toughened safety glass with full height sheets where practical (with no glass overlaps)
- Integral gutter
- Double sliding door
- 2 free roof vents (10'4" x 8'4" greenhouse)
- 3 free roof vents (10'4" x 10'4" greenhouse)
- 4 free roof vents (10'4" x 12'4" greenhouse)
- Eaves height 4'4" (1312mm) including base plinth
- Ridge height 8'0" (2437mm) including base plinth
- Door height 6'2" (1880mm) including base plinth
- Door width 4'0" (1210mm)
THIS ALUMINIUM GREENHOUSE: This metal greenhouse features a strong aluminium frame which is well braced for extra rigidity. Horticultural glass is available if you want a strong greenhouse at the best price. Toughened glass is best if you are concerned about safety. Although strong, the design is basic with all fixing bolts and glazing clips visible and plenty of struts and cross braces required. PVC bar capping is available in place of the glazing clips. Although not as elaborate as some more expensive greenhouses, if you want a strong greenhouse at a sensible price these aluminium greenhouses are a popular choice.
SILVER FINISH ALUMINIUM: Silver finish is the natural colour of aluminium before it is painted. It is cheaper than painted aluminum but just as strong and durable. An unpainted aluminium greenhouse will gradually oxidise producing fine grey powder forms on the surface of the greenhouse. This is the aluminium's natural self protection and it does not harm the greenhouse. Oxidisation occurs quicker in areas of high pollution or in coastal areas.
TOUGHENED GLASS: Toughened glass is the best glazing material for use in greenhouses. It is around 6 times stronger than normal glass so it is less likely to break and when it does break toughened glass breaks into harmless small pieces. This makes toughened glass the best option for all the family including children, pets and the elderly. Toughened glass also strengthens the frame and it is heavy which helps to resist wind. Full height toughened glass is supplied in larger sizes than horticultural glass with no overlapping glass.
BASE PLINTH: The base plinth makes installation much easier. It is designed to be a portable and prefabricated foundation beam. The plinth features a flat underside to spread the weight of the greenhouse over a larger area. The base plinth can be placed on any flat and level surface including soil, gravel, decking, concrete or paving slabs. It is best to prepare a perimeter footing of concrete or paving slabs for the base plinth to stand on. However, with care the base plinth can be placed on any surface including soil or gravel provided that the ground is flat and level.
BASE ANCHORS - CORNER PEGS: The base plinth includes corner pegs which are designed to be buried in the ground or set in concrete. This is recommended in less sheltered locations. The pegs are used as angle brackets to fix the corners of the base plinth together but they also extend downwards into the ground. If your greenhouse is sited on an existing patio or paved area you can cut the pegs off at ground level. The offcuts can be used to as brackets to help secure the base plinth into the concrete.
GREENHOUSE LOCATION: Ideally your greenhouse should have a clear space at least 18" wide on all sides, if possible. This ensures easy access for both installation and future maintenance. In reality this is often not practical and at many sites it is not needed. A reduced clearance is often possible on one or two sides. You should cut back or remove any nearby shrubs and trees. Remember to allow for future growth. Ideally the ridge of a greenhouse should run from east to west. The best position for a freestanding greenhouse is a sunny spot outside the shadow of nearby buildings and trees. A sheltered position is best otherwise additional screening may be advisable. Plants need plenty of water so your greenhouse should be close to a water supply and the site should be well drained.
SIZES - LENGTH AND WIDTH: The external wall sizes are listed alongside the price. The first dimension listed is the width and the second dimension is the length. The width refers to the angled gable walls at the front and rear including the door wall. The length refers to the side walls.
- White PVC bar capping
- Louvred vents
- Extra roof vents
- Automatic roof vent openers
- Automatic louvre openers
- Downpipe kits
- Attractive wooden slatted water butts
- Electric and gas heaters
- Thermometers and soil gauges
- Automatic watering systems
PVC BAR CAPPING: Traditionally greenhouse glass is secured in aluminium greenhouses using stainless steel or galvanised glazing clips. PVC bar capping is an effective alternative which is at least as strong as clips but neater and easier to clean. The standard glazing clips are replaced with full length PVC strips which hold the glass along its entire length. PVC bar capping cannot be fitted in a greenhouse with overlapping glass. This quality feature is only available with large pane glazing. PVC capping is coloured to match the greenhouse frames.
VENTILATION: Improved ventilation increases the air circulation through the greenhouse for better growing results. Automatic openers react to heat which ensures that in hot weather the vents open in your absence and then close again when its cooler. Louvred ventilators provide a healthy air flow through the greenhouse to ensure improved growing conditions and better crops. Vents are an integral part of the greenhouse so it is easier to fit extra vents at the outset. Some plants such as alpines require more ventilation than others. If you are not yet sure which plants you are likely to grow improved ventilation will give you more versatility.
HEATERS: We offer a huge range of heaters so whatever your specific requirements we have a heater to do the job. Our electric heaters require a standard domestic 13 amp electricity supply. Our propane gas heaters require permanent trickle ventilation when in use. As an approximate guide, a 3kw heater will heat a greenhouse up to 8'x12' or provide frost protection only up to 10'x15' in normal site conditions. A 1.5kw heater will normally heat a greenhouse up to 6'x8' or provide frost protection only up to 6'x12'. Internal partitions are often used in large greenhouses to create a smaller warm room which is cheaper and easier to heat.
HEATING REQUIREMENTS: Heating requirements vary for several reasons. Location is one factor with more heating required in Scotland than in southern England and less heating required in a sheltered position. The design is also a factor. For example, dwarf walls improve the insulation and lean to greenhouses absorb warmth from the existing wall. Another factor is the materials used. Polycarbonate greenhouses retain heat better than glass and wooden greenhouses retain heat better than metal greenhouses. We recommend you to buy a bigger heater than you need - you can always turn it down.
BUBBLE INSULATION: Bubble insulation helps to protect plants and reduces winter heating costs. The insulation is attached to the inside of the frame using retaining brackets. The brackets are easily fixed to the greenhouse frame and they hold the insulation securely in place. This product is quick and easy to fit the first time and even quicker subsequently. The pack includes insulation, retaining brackets and instructions.
POLYPROPYLENE FLOOR TILES: A durable polypropylene floor or footpath is an affordable alternative to slabs or concrete. Easy to install within a few minutes, these interlocking polypropylene pavers simply click together with no fixings needed. Unlike slabs or concrete these pavers are lightweight, easy to install and fully relocatable. Designed to spread weight, the finished floor is capable of supporting 36 tonnes per square metre. First the ground is levelled and then the pavers are laid directly on the soil. The pavers can also be laid on grass, sand or gravel. The finished floor or footpath is self draining and suitable for wheelbarrows and wheelchairs. It fits comfortably inside the greenhouse with a few inches to spare. The tiles are easily prised apart by folding so the floor is even quicker to remove if required.
RECYCLED PLASTIC BASE KITS: Our durable eco-grid and eco-paving base kits are an affordable alternative to slabs or concrete. Lightweight and easy to install within a few minutes, these 100% recycled polypropylene pavers simply click together with no fixings needed. Designed to spread weight, our plastic bases are self draining and fully relocatable. A fully paved base has no soil inside the greenhouse. A perimeter base features a single row of pavers laid around the perimeter of the greenhouse with soil inside. The kits include weed control membrane which is laid below the pavers. First the ground is levelled and then the membrane is laid directly on the soil. The pavers are laid on the membrane. The pavers should be backfilled with pea shingle which is not supplied. Approximately 20kg of shingle is required per paver. Where space permits the base is normally laid full size but if required in a tight location the pavers can be cut to size with no loss of structural integrity. The base is normally a few inches larger than your building. Fast delivery within 3-5 days ensures that you can start work quickly.
ECO-GRID BASE KITS: Our eco-grid plastic bases can support up to 150 tonnes per square metre. Each eco-grid paver is 472mm x 472mm and 40mm thick with an immensely strong 60mm hexagonal cell structure. Eco-grids can be laid on soil or shingle. Integral pegs on the underside help to level the base grids more easily. If the sub-base is concrete or a similar hard surface we recommend our eco-paving which features a flat underside.
ECO-PAVING BASE KITS: Our eco-paving is stronger, less brittle and more difficult to damage than concrete paving slabs. The pavers have a strong grid structure underneath and the surface looks similar to concrete slabs. We recommend eco-paving bases for larger sheds and workshops, log cabins, commercial use and any other heavy duty applications. It is also recommended if the sub-base is concrete or a similar hard surface, because the pavers feature a flat and level underside. Eco-paving can also be laid on soil or shingle. Supporting up to 200 tonnes per square metre, each eco-grid paver is 385mm x 385mm and 40mm thick.
DELIVERY UPDATE: This item is currently available within the estimated delivery times below, with no delays. Our delivery times are slower than normal due to unprecedented demand.
- Delivery is normally between 4 and 6 weeks after order.
- Our greenhouse prices include all delivery charges - unlike others we do not add delivery charges during the checkout process.
- This greenhouse is easy to deliver if access is restricted - all packages are designed to pass through a normal single door.
SPECIALIST DELIVERY SERVICE: These greenhouses are normally delivered by specialist trained staff in dedicated vehicles. The benefits of a specialist delivery service include less damage and helpful drivers who will carry your greenhouse to your chosen storage place. We recommend that glass is stored in a safe place where the driver will stack it neatly for you. The aluminium components arrive in one or two long thin boxes.
- All greenhouse prices include VAT.
ORDER ONLINE: You can pay with a debit or credit card. We also accept password protected online payments using Verified by VISA or Mastercard SecureCode.
METHODS OF PAYMENT: We accept most major credit cards and debit cards including VISA, MasterCard, VISA Delta, VISA Debit, MasterCard Debit, Electron, Solo, Switch, Maestro and UK Maestro. We also accept secure online payments using Verified by VISA or MasterCard SecureCode. We do not accept American Express or Diners Club cards at present.
SCHOOLS, COUNCILS AND BUSINESSES: We supply many schools, local councils and businesses both large and small. The prices and terms are the same so you can order online if you wish. If you want to pay by BACS transfer or company cheque please email us.
- Low cost installation available in many areas
- Pay separately on completion
THOUSANDS OF SATISFIED CUSTOMERS: Since we were established in 1981 we have connected thousands of customers to our unique network of independent fitters and baselayers. Specialist teams have offered to install our buildings or lay bases in many areas at low fixed rates in return for recurring work. The prices are offered within a specific area and subject to conditions. You deal direct with the fitter or baselayer which keeps the prices low and you pay them separately on completion. We make no commission except for a small upfront referral fee. The fitters and baselayers pay us nothing and we pay them nothing. Although we do not manage or supervise the work directly we listen carefully to feedback and any team who provides a poor service is removed from our network. For decades this effective system has provided a low cost option for our customers with high levels of satisfaction.
LOW PRICES FOR BASELAYING AND INSTALLATION: Low cost fitters and baselayers are available in many areas. To see the prices in your local area just enter the first half of your postcode at the top of every page or CLICK HERE. All of the specialist teams available in your area are listed alongside the building prices. To see their prices and conditions just click on the blue "i" symbol next to each team. To order online just add your chosen fitter or baselayer to your shopping basket before you proceed to the checkout.
NO FITTERS IN YOUR AREA? If you cannot see any fitters or baselayers in your area please contact us. We can often obtain a competitive quote from a team who is willing to travel a bit further. If you experience any other problems, for example entering your postcode or finding the fitting prices just contact us.
FITTERS & BASELAYERS REQUIRED - REGISTER FREE: Give your business a boost - we can put you in touch with customers in your local area! We need more fitters and base layers in all areas across England, Scotland and Wales. Register now - its free! It only takes a few minutes to register. Just CLICK HERE to apply online.