Greenhouse Parts
Greenhouse parts and replacement hardware for aluminium greenhouse repair and maintenance: glazing clips, Z lap clips, cropped head bolts, square glazing bolts, aluminium profiles, sliding door wheels and louvre window parts. This is the collection for domestic gardeners, allotment holders, nursery operators, garden maintenance contractors and handyman services repairing greenhouses after winter storms or general wear.
You will find W glazing clips for securing glass and polycarbonate panels to the aluminium frame, Z lap clips for sealing overlapped glazing panels, cropped head bolts and square head bolts that slide into the aluminium channel for standard greenhouse hardware fixing, aluminium T-strips and profiles, sliding door wheels for greenhouse door replacement, and other specific greenhouse hardware parts. Most items are cross-compatible with the standard aluminium greenhouse systems sold in the UK - Elite, Halls, Palram, Vitavia, Robinsons and equivalent brands.
The brand here is ALM Manufacturing, the British Norwich-based specialist for garden machinery replacement parts and greenhouse hardware since 1969, with the GH-series covering the full range of common greenhouse repair parts (GH001 W Glazing Clips, GH002 Z Lap Clips, GH003 Cropped Head Bolts, GH004 Square Glazing, GH005 Aluminium profile, GH006 Sliding Door Wheels, GH009 hardware).
6 products
Greenhouse Parts – Product list
Greenhouse parts and replacement hardware at MTN Shop UK
Aluminium greenhouses need regular hardware maintenance to keep their glass or polycarbonate panels secured through UK weather. Wind, hail, temperature changes and UV exposure all degrade the small plastic clips and hardware that hold the greenhouse together over the years. Getting the correct replacement parts quickly is what turns a broken greenhouse into a working one before the next storm. The Greenhouse Parts collection covers the standard ALM Manufacturing GH-series replacement hardware for aluminium greenhouse repair.
W glazing clips (GH001)
The W glazing clip is the specific spring-shape clip that holds greenhouse glazing panels (glass or polycarbonate) into the aluminium frame. The clip flexes into the channel on installation, then springs against the glass edge to hold it in place. Standard UK greenhouse systems use W clips throughout, and they are typically the first parts to fail from weather exposure - after 5-10 years the plastic degrades from UV and cold-cycle stress, and clips break during winter storms. The ALM GH001 W Glazing Clips replacement kit fits standard UK aluminium greenhouse systems. Available in a 50-clip pack (GH001) for full greenhouse re-clipping.
Z lap clips (GH002)
The Z lap clip secures the overlap between two horizontal glazing panels on greenhouses that use overlapped rather than single-panel glazing. The Z shape wraps around the top edge of the lower panel and the bottom edge of the upper panel, sealing the joint and preventing wind lift. Essential for lap-glazed greenhouses; not needed for single-panel greenhouses. The ALM GH002 Z Lap Clips are the standard replacement specification.
Cropped head bolts and square glazing (GH003, GH004)
Greenhouse aluminium frames use specific fastener types that slide into the channels of the aluminium extrusion rather than requiring drilling. Cropped head bolts (ALM GH003) have a specially-shaped head that fits the channel geometry - the bolt slides in from the end, the head engages the channel walls, and the bolt cannot rotate once tightened. Square head bolts / square glazing bolts (ALM GH004) use a square-section head that grips the channel similarly. Both are used throughout greenhouse assembly for panels, bracing, ridge bar and door hardware. Standard UK greenhouse systems use these bolt types across most models.
Aluminium profiles, sliding door wheels and louvre parts (GH005, GH006, GH009)
The ALM GH005 Aluminium covers replacement aluminium profile/strip work for greenhouse frame repair. The ALM GH006 Sliding Door Wheels are replacement wheels for the sliding door mechanism common to most modern aluminium greenhouses - the wheels wear out with use and the door starts sticking or jumping the track. The ALM GH009 covers additional hardware for louvre window opening mechanisms and related greenhouse assembly hardware.
Cross-compatibility with UK greenhouse brands
Most standard UK aluminium greenhouse brands use similar or identical hardware standards, and the ALM GH-series is engineered to fit across the range. Common compatible brands include Elite Greenhouses, Halls Greenhouses, Palram Canopia, Vitavia, Robinsons Greenhouses, Rion / EcoGrow, plus most B&Q, Wickes and Homebase own-brand aluminium greenhouses. If you are unsure of compatibility for your specific model, take a photo of the existing part and the greenhouse itself, or check the greenhouse manufacturer's replacement parts guide for the correct specification before ordering.
When to replace greenhouse hardware
Common signs that greenhouse parts need replacement: glazing panels rattling or lifting in wind (glazing clips failing), gaps between overlapped panels letting rain in (Z lap clips broken or missing), sliding door sticking or jumping the track (door wheels worn), bolts spinning in the channel without tightening (bolt heads worn or channel damaged), or visible cracking and yellowing on plastic parts (UV degradation). Winter is typically the highest failure period, and it is worth checking the greenhouse each spring and replacing any degraded parts before the next windy season.
Related categories
The Greenhouse Parts collection sits within our wider Gear for Gardeners range. For general garden hardware and tools, see our gardening tools, garden sprayers and pressure washers collections. For related ALM Manufacturing replacement parts including drive belts for lawn mowers and garden tool sharpeners, see the sibling collections. For the full ALM Manufacturing range across garden machinery replacement parts, see the ALM Manufacturing brand page. For hand tools useful for greenhouse assembly and repair (screwdrivers, spanners, ratchets), see our screwdrivers, spanners and ratchets ranges.
For trade orders, allotment group supply, garden centre resale or specific ALM Manufacturing greenhouse part references, request a quote and our team will get back to you with availability.
