Introduction Thank you for purchasing your new Alton greenhouse extension. We recommend you familiarise yourself with the instructions and read all safety information before you commence assembly. This instruction manual is also available online at www.greenhousepeople.co.uk the technical help section should you need to reprint it. Should you require any additional advice you can always call us on 01782 385409.
Choose a site where the greenhouse is relatively easy to get to and convenient to bring water to and possibly a supply of electricity. Finally, and most importantly, choose a site where your Alton Greenhouse will look right so that it will complement your garden.
Overview To build you new greenhouse you will need the following tools: Spirit Level Pencil PZ2 Screwdriver Bit Cordless Screwdriver (2 would be ideal, 1 to drill and 1 to screw) 4mm Drill Bit 7mm Masonry Bit Hammer Drill Hammer Step ladders There are 7 different types of screws used in the construction of the greenhouse.
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Overview Glazing the structure is very simple but be very careful of the edges of the glass as the pane will break into tiny peaces if you catch an edge on a hard surface such as concrete. You should also wear suitable gloves when handling the glass (this also helps to keep it clean).
Base Assembly Dia. 1 Dia. 3 D174M Dia. 2 Extension Base Part Name Part Size Number (mm) Extension Side EV0307 2519 Joining Bracket EV0312 Lay out your aluminium base sections as the diagram shows. Base Bracket D174M Insert bolts in the bolt channels for attaching the base brackets (D174M), diagram 1.
Side Assembly Begin by laying out the components for your 2 extension sides flat on the ground as the diagram below shows. Use the table below to help identify the components with the part numbers and sizes. First of all drill pilot holes through the bottom of each mortise on the cill section (diagram 4, page 9). Then slot each glazing bar into the mortise holes.
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Side Assembly Internal Diagram 4 Pilot hole, it is Make sure the side bars are pushed all the easiest to drill way in, you may find they need a light tap down through the with a wooden mallet or something similar. middle of the mortise to make (If you are going to glue your joints this is the...
Front Assembly Dia. 6 External Dia. 8 Diagram 6 Dia. 7 External Keep faces in line Internal Diagram 8 Diagram 7 To install this section you will need a helper to hold the side in position or strap it to a set of steps. Drill two pilot holes in the bottom of the side corner bar as in diagram 6.
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Front Assembly Dia. 9 8ft Front Part Name Part Size Number (mm) Front Cill EV0006 Roof Corner R EV0040 1446 Roof Corner L EV0041 1446 Side Corner R EV0056 1650 Side Corner L EV0057 1650 Gable Bar R EV0068 1994 Gable Bar L EV0069 1994...
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Front Assembly Fix the opposite gable bar and cill in the same way. Before you install the roof corner bars you need to fix the door header in place. Slot the door header into the mortise holes and fix with a 50mm screw through each end (diagram 10).
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Front Assembly Dia. 12 Dia. 13 External Now fit the roof corner bars to the front end. As before, fix the lap joint at the top of the gable bar first with 40mm screws (diagram 17) then secure the bottom end to the eaves bar with a 80mm screws (diagram 18).
Extension Installation Dia. 14 Dia. 15 Fix with 25mm screws Take the first side extension section and slot the small flat piece of timber in the mortise joint. Drill 2 pilot holes and fix this in place with two 40mm screws. Now take this to the aluminium base and slide it up to the other side section.
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Extension Installation Dia. 16 Dia. 17 Next fit the side extension bar, first slot the tennon on the end of the bar into the mortise in the cill. Slot the top into position, lining the edge of the bar up with the joint of the two eaves bars.
Rear Assembly Take second side extension section place it on the base. Fix this as before . 8ft Rear Part Name Part Size Number (mm) Cill EV0011 2536 Now fit the final 2 side corner bars as before. Roof Corner R EV0040 1446 See diagram 7 for the position of the holes.
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Rear Assembly Locate the rear cill and rear gable glazing bars (these are different to the front gable glazing Pilot bars as they do not have the mortise for the hole door header). here Start by drilling pilot holes in the cill section through the mortise holes as before (diagram 8).
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Rear Assembly Dia. 19 Dia. 20 Internal External Diagram 19 Now fit the roof corner bars to the rear end. Secure these to the gable glazing bars, diagram 19. Now fix the roof corner bar and side corner bar through the eaves bar with an 80mm screw. You can then screw the base to this section with a 25mm screw.
A-frame Assembly Dia. 21 You can start building the A-frame next. Take the eaves extension braces and locate them in the mortise slots in the extension side bars. Pilot hole and fix these with 40mm screws. Make sure the flat face that meets the side bar is seated correctly before fixing.
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A-frame Assembly Dia. 22 Dia. 23 Diagram 22 Now slot the extension roof bars onto the eaves bars and eaves braces, again locating the mortise and tennon joints (diagram 22). Before fixing these it would be a good idea to fit the ridge extension brace (diagram 24).
Roof Assembly Dia. 27 Dia. 25+26 Now install the ridge sections. Firstly fit the ridge extension plate (this is the same part as the eaves braces). Drill 4 pilot holes as in diagram 25. Space these about 50-60mm apart with an 80-90mm gap in the middle so that the fixing screws don’t interfere with the ridge joint.
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Roof Assembly Diagram 26 Diagram 27 External Diagram 28 X-ray Dia. 28 Ridge Now its in position drill 2 pilot holes into the end as in diagram 27. Try to keep the angle Optimum something close to diagram 28, through the top screw angle face of the roof corner bars.
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Roof Assembly Dia. 29 Diagram 29 Next install the main ridge section, locate this with the roof corner bars on the front of the building. Fix this as before and then fix the ridge plate to the main ridge as shown in diagram 25 with 80mm screws.
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