Question 1

Which greenhouse base type suits New Milton's sandy ground?

Accepted Answer

For properties on New Milton's sandy plateau — particularly in Bashley, Wootton, and inland Ashley — paving slabs are often the ideal greenhouse base. Sandy soils compact well, drain freely, and provide a stable substrate for slabs laid on a properly prepared type 1 sub-base. The jointed design allows excellent perimeter drainage, and the surface provides a clean, level platform for your greenhouse frame. For heavier greenhouses or those on mixed ground transitioning towards Barton Clay, we may recommend poured concrete with reinforcement. We assess every garden individually and recommend the most cost-effective solution for your specific ground.

Question 2

My property is near Barton-on-Sea — does the clay affect greenhouse bases?

Accepted Answer

Yes, the Barton Group clays near the coast require careful preparation for any greenhouse base. This clay is moisture-sensitive and can shrink in dry weather and swell when wet — movement that would twist a greenhouse frame and crack glass panels. We use deeper sub-base preparation on Barton Clay, typically excavating to at least 150mm and compacting a generous type 1 sub-base. Reinforced concrete is often recommended for larger greenhouses on this ground. The key is preventing the clay's seasonal movement from reaching your greenhouse — and that's what our sub-base engineering achieves. Our 10-year guarantee covers all installations on Barton Clay.

Question 3

How important is drainage for a greenhouse base in New Milton?

Accepted Answer

Drainage is critical, though the approach differs depending on where you are in New Milton. On the sandy plateau areas around Bashley, natural drainage is generally excellent — water percolates through the sandy substrate readily. We still ensure proper falls away from the base to prevent surface pooling. On Barton Clay near the coast, drainage becomes much more important — clay holds moisture and can waterlog the area around your greenhouse, encouraging root rot, fungal diseases, and structural damp. We incorporate perimeter falls, sub-base drainage layers, and sometimes French drain channels to manage water effectively on clay plots.

Question 4

How much does a greenhouse base cost in New Milton?

Accepted Answer

Greenhouse base prices in New Milton depend on the base type, size, and your ground conditions. Our starting prices: paving slab base from £510 (9x5), poured concrete base (reinforced) from £595 (8x6), and ground screws with timber frame from £1,650 (8x6). Sandy ground areas (Bashley, Wootton) are generally at the lower end of our pricing because they're easier to work with. Barton Clay areas near the coast may require additional sub-base depth, which we factor into your personalised quote. All quotes include materials, labour, sub-base preparation, and waste removal — no hidden costs.

Question 5

Do I need planning permission for a greenhouse in New Milton?

Accepted Answer

Most freestanding greenhouses qualify as permitted development under New Forest District Council guidelines. Standard conditions apply: single-storey, positioned to the rear, maximum height 4m (dual-pitched) or 3m (other roofs), and within 2m of boundary a maximum height of 2.5m. Total outbuilding coverage must not exceed 50% of your garden. However, some New Milton properties sit near the New Forest National Park boundary, where stricter rules apply. If your property borders the park, we recommend checking with both New Forest District Council and the New Forest National Park Authority. We install bases only and cannot provide planning advice, but we're happy to point you in the right direction.

Question 6

Can you install a greenhouse base near New Forest trees?

Accepted Answer

Yes, and it's something we handle regularly in Bashley and Wootton where many gardens border the New Forest. Protected trees with Tree Preservation Orders are common in these areas, and excavation near their roots can be prohibited. Ground screws are often the ideal solution — they're driven into the ground without digging, causing minimal disturbance to root systems. A level timber frame is then bolted on top to create your greenhouse platform. This approach protects the trees, satisfies TPO requirements, and gives you a rock-solid base. We assess tree proximity at the quote stage and advise accordingly.

Question 7

What greenhouse orientation works best in New Milton?

Accepted Answer

New Milton's coastal position provides excellent light levels for growing. We recommend orienting your greenhouse ridge east-west to maximise low winter sun — particularly valuable given the area's mild maritime climate that already extends the growing season. South-facing positions are ideal, and gardens in Ashley and Old Milton often have south-facing boundary walls that create perfect micro-climates: the wall absorbs warmth during the day and releases it overnight. Avoid placing greenhouses in the wind shadow of large New Forest trees where they'll lose morning sun, and consider shelter from south-westerly coastal winds.

Question 8

How level does a greenhouse base need to be?

Accepted Answer

Greenhouses require tighter tolerances than sheds or garden rooms because glass panels and aluminium frames have no flex. Even a 5mm deviation across an 8-foot span can cause glazing bars to bind, glass to sit unevenly creating draughts and leak points, and sliding doors to jam. We laser-level every greenhouse base to within 3mm tolerance across its full span. On New Milton's sandy ground, this precision is generally straightforward to achieve. On Barton Clay, it demands more careful sub-base preparation to ensure the level holds through seasonal ground movement — not just on the day of installation, but for years to come.

Question 9

Do you install bases for larger greenhouses in New Milton?

Accepted Answer

Absolutely. We install bases for greenhouses of all sizes — from compact 6x4 models perfect for Old Milton townhouse gardens to substantial 12x8 and larger glasshouses on the more spacious plots in Bashley and Wootton. Larger greenhouses are heavier and place more demands on the base, particularly on Barton Clay where the load needs to be distributed across a reinforced slab to prevent differential settlement. We also install bases for polytunnels and commercial growing structures. Share your dimensions and we'll provide a precise quote for your specific greenhouse and New Milton location.

Question 10

Can you access compact gardens in Old Milton?

Accepted Answer

Yes. Many properties in Old Milton and the town centre have limited side access — narrow passages between houses and sometimes only pedestrian access to the rear garden. We regularly work through gaps as narrow as 700mm using compact equipment, wheelbarrows, and portable tools. For greenhouse bases, materials can be carried through in manageable loads without heavy machinery. Ground screws require minimal equipment and are often the fastest option for restricted-access sites. Send us a photo of your access point and we'll confirm exactly what's possible — in our experience, most Old Milton gardens are accessible with the right approach.

Question 11

What about greenhouses on sloping ground towards the coast?

Accepted Answer

Many gardens in New Milton slope towards the coast, particularly around Barton-on-Sea and Chewton Bunny. We have several approaches for greenhouse bases on gradients: for gentle slopes, we excavate to create a level cut-and-fill platform with properly compacted sub-base; for moderate slopes, raised edges or retaining allow the base to sit level; and for steeper sites, ground screws with a level timber frame eliminate the need for extensive excavation of heavy Barton Clay. Each approach has different cost implications, and we'll recommend the most economical option during your free quote.

Question 12

How long does greenhouse base installation take?

Accepted Answer

Most greenhouse bases in New Milton are completed in a single day. Paving slab bases and ground screw installations are ready for your greenhouse immediately — you can erect your greenhouse the same day. Poured concrete bases require 24-48 hours of curing before the greenhouse can be placed. Sandy ground in Bashley and Ashley is generally quicker to excavate and prepare than Barton Clay near the coast, where the heavier soil adds some time. We coordinate with your greenhouse delivery date so everything aligns perfectly — your base is ready and cured before the greenhouse arrives.

Question 13

Is a site visit required before you can quote?

Accepted Answer

Often not. We can provide accurate greenhouse base quotes from photos and measurements in most cases. Send us a photo of the proposed location, a photo of your access point, your greenhouse dimensions, and any relevant details about slope, trees, or drainage. For larger greenhouses (10x8 and above), complex sites on Barton Clay, or if you'd simply prefer a face-to-face chat, we offer free site visits with no obligation. We cover New Milton regularly from our base in the area, so we can usually visit within a few days of your enquiry.

Question 14

What guarantee do you provide on greenhouse bases?

Accepted Answer

We provide a comprehensive 10-year written guarantee covering both materials and workmanship on every greenhouse base we install. This covers structural integrity, levelling remaining true despite ground conditions, all materials (concrete, reinforcement, slabs, ground screws), and workmanship quality. The guarantee applies equally to bases on sandy ground and Barton Clay — because we engineer each base for its specific New Milton location, we're confident every installation will perform for the long term. We're a local family business and we stand behind every job.

Question 15

Do you erect or assemble greenhouses?

Accepted Answer

No — we specialise exclusively in base installation and do not erect or assemble greenhouses. For professional greenhouse erection in New Milton, we recommend: Southwest Greenhouse Installers — experienced father-and-son team covering Hampshire and Dorset, specialising in Rhino, Elite, and Robinsons greenhouses. Emerald Construction Services — specialist greenhouse installers based in Bishop's Waltham, Hampshire, covering all makes and sizes. Chris Dewey Greenhouse Installations — established since 1995 in Hampshire, official installers for The Greenhouse People, Eden, and Juliana brands. We're happy to coordinate timing so your base is installed, level, and ready before your greenhouse erector arrives.

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Ground Conditions for Greenhouse Bases in New Milton

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